Patent Publication Number: US-6220311-B1

Title: Preservation and dispensation by volumetric displacement

Description:
This application is a CIP of 08/659,820, filed Jun. 7, 1996, now abandoned, and is a 371 of PCT/US97/09934, filed Jun. 7, 1997. 
    
    
     TECHNICAL FIELD 
     The present invention relates to the field of storing and dispensing materials, with particular application to containers with contents that are partially consumed. 
     BACKGROUND ART 
     Containers, when partially emptied of their contents, exhibit a wide range of undesirable characteristics. Unless special and often expensive procedures are used, atmosphere enters the container and pollutes it with undesirable elements such as water vapor, air born contaminates, or unwanted oxygen. Containers that are emptied in water baths, space, or in other material baths are damaged or difficult to pour in those environmental elements. The contaminants can pre-maturely cure or damage the product or cause unwanted water condensation, as air sensitive paints and glues harden the skin, fine wines and other preparations oxidize, dry wheat crackers get soggy, or liquid fuel tanks gather water. These are just a few examples. Another undesirable characteristic of a partially emptied container is the tendency for the usable material in the container to loose gas, off gassing to the air space left in the container. Off gassing results in premature curing or damaging of products. It results in loss of material. Materials with water content, when frozen in partially full containers, loose moisture to the air by sublimation and exhibit “freezer burn”. Off gassing can cause safety concerns as a mixture of fuel or other flammable vapor and oxygen in a partially full fuel tank can explode. A half full container of a dusty material imposes increased fire hazard if the dust air mixture is combustible, especially if that container is large such as in a storage silo. Containers that are partially filled with toxic or unpleasant material that evaporates emit more or unpleasant odors when opened then full containers do, polluting the environment and creating health risks. Waste disposal and septic system holding tanks under certain conditions emit foul odors. One particularly poignant example of off gassing damage is that which occurs to partially consumed portions of effervescent beverages. Effervescent beverages such as soda, champagne, sparkling wines, coolers, beer and the like, have CO 2  gas dissolved in them, at pressure. Unfortunately the carbonated beverage is stored under pressure in the bottle and after the bottle is opened, the best part of the gas is free is escape the beverage, and the drink goes flat. Even if the cap is replaced, the gas is free to go into the air above the drink, and the bigger that space gets as the drink is “used up”, the more gas can escape and the poorer the drink tastes. A second opening of the container compounds the problem and accelerates the damage to the beverage. Leaving a very small amount of beverage at the bottom of the container, will yield in a day, a drink that is almost devoid of effervescence and foremost people, worthless. A problem that the invention deals with as a side benefit is that ice when used to cool a drink, waters down the drink as the ice melts. That is, the water derived as the ice melts contaminates the drink and dilutes it. Management of materials in containers that are only partially full creates a number of management difficulties. For example a characteristic of a partially emptied container is that in many cases, it is more difficult to remove material from it. A half empty tube of toothpaste is harder to squeeze. Rolling up the bottom of a metal squeeze tube can cause the metal to crack if rolling is done improperly. As the mustard or glue in the squeeze bottle is used up, it becomes more difficult to dispense, requiring bottle inverting and shaking. Delicate applications that require the material to be dispensed in a prescribed manner, such as decorative application by artists, precise glue or calk application, and cake icing, become more difficult as the tube or bottle has less usable material in it. Trying to squeeze the usable material in an upward direction, such as encountered when under a car and trying to make the squeeze can of penetrating oil shoot in an upward direction, or putting material from a squeeze bottle onto the underside of a horizontal surface such as a ceiling, is difficult. Containers with simple taps, spigots, petcocks, or fittings must generally have the tap at a low location in the container so that gravity will bring the liquid to the exit opening of the container. Trying to get the last bit out of a squeeze tube is near imposable. Cylinders of expensive gasses can not be completely emptied in easy fashion. When the internal pressure of the gas is equal to the external atmospheric pressure, unless a vacuum is applied, no more gas will come out of the cylinder. Another undesirable characteristic of partially emptied containers is that the contents can move about or splash. In vehicles, this leads to an uneven load that moves about disrupting the smoothness of the ride. Baffles in liquid fuel tanks are currently used to reduce sloshing. In other instances, sloshing causes the material in the container to froth up. For example, a shaken and frothed effervescent beverage sprays all over when opened. Containers in some instances require venting. Air must be let into the container via another opening so that the usable material can exit. The vent often must be manually opened and closed, a labor consuming activity. Air coming in the vent can pollute or damage the usable material in the container. It is difficult to deliver a metered or specific amount of material from a container with out introducing air to the container. A half full container is not as stable as a full container with less weight, can tip over more easily. There is a psychological effect on the user that is different for a full container and a partially emptied one. Taking paint from a can and putting it into other containers for brush dipping or rolling is a messy affair. So is putting the unused portion back into the can. Pumping material requires apparatus of various degrees of complexity. Pumping materials that are environmentally sensitive, in that they are volatile and pollute or in that they are damaged by contact with the atmosphere requires expensive apparatus. Some containers contain usable material and a propellant gas packed under pressure. The compressed propellant gas is used to drive the material out at the push of a button or to spray the usable material. These generally disposable containers loose pressure as the usable material and the gas are used up. In the production and use of containers there are environmental considerations. Because of the problems associated with partially filled containers, products are frequently shipped in smaller containers. While one container is opened and in use, the remaining material is kept fresh in the remaining unopened containers. This technique requires more container wall material per unit of stored usable material because in general, the surface area of the container increases in proportion to the square of of the container&#39;s radius, while the volume increases as the cube. Since the surface area of the container is directly related to the amount of material it takes to make the container, in general the greater the number of containers a given amount of usable material is stored in, the more container wall material will be needed to make those containers. Also, more containers generally take more human and machine effort to make. In all, it is more economical as well as more conservative of energy and natural resources to make large containers. The down side is that large containers can lead to increased amounts of spoilage of the unused contents of the containers. Even in small containers, damaged unused material causes loss of energy and natural resources. Utilization of extra energy and natural resources is detrimental to our environment. These losses lead to financial loss. Containers whose contents are packaged under pressure for spray tube delivery, have in the past, used propellant gasses that may be damaging to the environment. In general, it is a difficult problem to remove material from a container without allowing air to contact the remaining portions. It is even more difficult to remove the material under these conditions in metered portions. 
     Preserving the unused portion of effervescent beverages has also over time proved to be a difficult problem to address economically. Pumps have been developed which will repressurize opened bottles of effervescent material as exemplified by the device disclosed in U.S. Pat. No. 5,322,094 to Janesko. These cumbersome to use as each time the container is opened, the entire container must be repressurized. In addition, CO 2 , the gas used for carbonating drinks will transfer, in part, to the air pumped into the container, as the air has too low a partial pressure of CO 2  as it is pumped from the atmosphere into the container. The beverage still goes flat despite all the pumping. 
     The concept of filling a container with alternate material to keep it full and preserve the contents has been embodied in previous patents. Hohl, U.S. Pat. No. 262,773, patented 1882, shows an apparatus for insertion into a beer keg, the apparatus having a bladder attached that is filled with water from a reservoir mounted above the keg. The reservoir is utilized to fill the bladder with water as beer is removed from the keg via a tap mounted in the keg. A pipe is fitted between the reservoir and the keg. Water flows down a pipe from the reservoir and fills the bladder. A similar device is described by Kish, U.S. Pat. No. 2,762,534, patented 1956. Fluid is forced into a pipe which runs into the keg and into a bladder, that pressure causing beer to flow out another pipe with connection to the inside of the beer keg. Valves are used to regulate that pressure flow. This prior art has not seen wide spread utilization because it is expensive to purchase and extremely cumbersome to use especially in the home environment. 
     OBJECTS AND ADVANTAGES 
     What has not been fully exploited, is the fact that for many types of left over materials, instant preservation is not required. Recognition and application of this, allows for an extreme simplification of the volumetric displacement devices for preservation. No pumps, pipes, air or water reservoirs, spigots or even valves of any sort are required to preserve many materials, including effervescent beverages. Material may be removed from the container by actions as simple as picking up the container and pouring. Air allowed to enter the container is automatically dispelled as alternate matter is poured back into the container, filling it. As many materials, including effervescent beverages, need a period of exposure of some duration to be damaged, allowing them to be exposed for a relatively short period of time doesn&#39;t hurt them too much. If they are reprotected within a relatively short period of time, they survive well enough. This allows for extremely inexpensive and simple containers to the produced which are cost effective, even on a disposable basis. The containers often provide for adequate long term storage of materials. The new volumetric displacement devices are very easy to operate as they need no external hook ups or alternate apparatus. In addition, if the user decides that they want flawless air free or pressurized deliver, easy hook up of pumps or taps allow for this option while still utilizing the same afore mentioned container. Accordingly, besides the objects and advantages of the volumetric displacement devices described in the above patent, several objects and advantages of the present invention are: 
     (1) to successfully provide an inexpensive and easy means to dispense usable material from containers with out the remaining unused portion of the usable material being exposed to atmospheric air either during or after the dispensing operation. Air contains oxygen, water vapor and contaminates which can damage usable materials. 
     (2) to successfully provide a means to dispense usable material from containers underwater, in space or in other material baths from being exposed to those environments. 
     (3) as a result of the above, to greatly extend the life of materials stored in opened and partially used containers, in preventing premature curing, degradation, oxidation, hardening, or skinning, for atmospherically cured materials. 
     (4) to prove a means to prevent moisture condensation in fuel tanks and other storage containers. 
     (5) to provide a means for limiting the absorption of atmospheric water by materials exemplified by dried food stuffs, crackers, dry cereal, snack chips, dried fruit, candy, and organic materials. 
     (6) to successfully provide a means to limit evaporation of usable materials stored in partially consumed containers, so as to prevent premature curing or aging damage. 
     (7) to successfully provide a means to limit evaporation of usable materials stored in partially consumed containers. 
     (8) to provide a means for limiting freezer burn to usable materials stored in partially emptied containers that are frozen. 
     (9) to successfully provide a means to prevent dangerous air fuel mixtures from developing in partially empty fuel tanks and to prevent flammable air mixtures from developing in other partially emptied flammable volatile liquid containers. 
     (10) to provide a means to eliminate combustible dust air mixtures. 
     (11) to provide a means to reduce the amount of toxic or unpleasant smelling vapors that are emitted from containers by reducing the amount of air space in the container and the surface area of the material exposed to the atmosphere, reducing environmental pollution and health risks. 
     (12) to provide a means to reduce odors in waste disposal and septic systems with holding tanks. 
     (13) to successfully provide an inexpensive and easy means to prevent effervescent beverages from going flat after their container has been opened and partially consumed. 
     (14) to provide a means to replenish effervescence in valuable beverages that have already gone flat. 
     (15) to provide a means to conveniently cool drinks with ice, while the ice does not dilute the drink with water. 
     (16) to provide a means to make squeeze tubes and bottles deliver usable material as if they were full. 
     (17) to provide a means for easier and more controllable delivery of liquid or semi-liquid decorations and material administrations such as cake icing, artist&#39;s preparations, and glue. 
     (18) to provide a means for squeeze tubes (such as those commonly used for toothpaste) and squeeze bottles (such as those commonly used for glue or mustard) to deliver contents readily in an upward direction, even when the container is near empty of usable material. 
     (19) to provide a means for containers with simple taps, spigots, cocks, stopcocks, petcocks, or fittings to have the tap at any location in the container eliminating the need to have gravity bring the usable material to the bottom of the tank for exit at that low point. 
     (20) to provide a means to nearly empty a squeeze tube without undo effort. 
     (21) to provide a means to almost completely empty valuable gas stored in cylinders. 
     (22) to provide a means to prevent fuel in tanks from sloshing (shifting) without baffles. 
     (23) to provide a means to reduce frothing of liquids in containers caused by sloshing. 
     (24) to reduce labor in opening and closing air vents on containers in some instances. 
     (25) to successfully provide a means for the dispensation of usable material in metered (measured) allotments without exposing the unused material to the atmosphere. 
     (26) to prove a means for extra stability by providing full containers which don&#39;t tip over so easily, even when the contents are partially consumed. 
     (27) to provide a means to achieve positive human psychological effects from using containers that seem full. 
     (28) to provide a means to take paint, and other materials out of a can, use it for brush dipping or paint rolling, and to return the pain neatly to the can. 
     (29) to provide a simple inexpensive pump device, that also provides isolation of the usable material from the atmosphere, pollutants in the atmosphere, and water vapor in the atmosphere; extended life of the stored material by isolation from the atmosphere; reduced pollution of the environment by toxic volatile material stored in the container of the pump device; and vapor free of storage of volatile flammable liquids. 
     (30) to provide a means to deliver material from pressurized containers generally at a uniform pressure, even as the usable material in the container is depleted. 
     (31) to provide means to conserve natural resource and energy by making larger containers which have a greater usable material to container material ratio, and to make fewer containers. 
     (32) to provide means to serve natural resource and energy through increased product life. 
     (33) to provide a means to deliver material form pressurized containers generally at a uniform pressure, even as the usable material in the container is depleted, with non-environmentally damaging propellant gas. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
       
     FIG. 1A shows a device for storing of effervescent beverages, soda saver  1 , in a manner that prevents loss of carbonation. 
     FIG. 1B shows a cross sectional view of the device shown in FIG.  1 A. 
     FIG. 1C shows a cross sectional view of a device for storage of effervescent beverages, beer keg  1   c , in a manner that prevents loss of effervescence. 
     FIG. 1D shows a device for storage of wine, wine saver  1   d , in a manner that prevents contamination by the atmosphere. 
     FIG. 1E shows a cross sectional view of the devices shown in FIG.  1 D. 
     FIG. 1F shows a reversed soda saver  1 , the device of FIG. 1A, with reversed usable material and displacement matter chambers. 
     FIG. 1G shows a cross sectional view of the device shown in FIG.  1 F. 
     FIG. 1H shows a reversed beer saver  1   c , the device of FIG. 1C, with reversed usable material and displacement matter chambers. 
     FIG. 1I shows a cap controlled soda saver  1 , the device of FIG. 1A, modified so that the displacement matter chamber may not be opened without the usable material chamber being opened first. 
     FIG. 1J shows a cross sectional view of the device shown in FIG.  1 I. 
     FIG. 1K shows a modified cap controlled soda saver  1 , the device of FIG. 1I, modified so that the caps interfere because of a lip on the displacement matter cap. 
     FIG. 1L shows a cross sectional view of the device shown in FIG.  1 K. 
     FIG. 1M shows a cap controlled soda saver  1 , the device of FIG. 1I, with usable material cap removed, pouring out soda. 
     FIG. 1N shows a cap controlled soda saver  1 , the device of FIG. 1I, with usable material cap and displacement matter cap removed, having water poured into it. 
     FIG. 1O shows a perspective view of an Air Pump Soda Saver Fountain  1 . 2 , the device shown in FIG. 1K with a conventional soda bottle air pump and a conventional soda fountain faucet nozzle attached. 
     FIG. 1P shows a cross sectional view of the device shown in FIG.  10 . 
     FIG. 1Q shows a perspective view of a Free Floating Retro-Fit Soda Saver  1 . 3 . 
     FIG. 1R shows a cross sectional view of the device shown in FIG. 1Q, with usable material chamber sealed and displacement matter chamber sealed. 
     FIG. 1S shows a cross sectional view of the device shown in FIG. 1Q, with usable material chamber open and displacement matter chamber open. 
     FIG. 1T shows a cross sectional view of the device shown in FIG. 1Q, with usable material chamber open and displacement matter chamber open. 
     FIG. 1U shows a perspective view of a Retro-Tube Fit Soda Server  1 . 4 . 
     FIG. 1V shows a perspective view of the device shown in FIG. 1U installed in a conventional PET soda bottle, and with a conventional soda bottle air pump and a soda bottle fountain adaptor with a faucet nozzle installed. 
     FIG. 1W shows a cross sectional view of the device shown in FIG. 1U, installed in a conventional PET soda bottle, and with caps open. 
     FIG. 1X shows a top view of a Concentric Soda Saver  1 . 5  with both caps removed. 
     FIG. 1Y shows a cut away view of the device shown in FIG. 1X with both caps installed. 
     FIG. 2A shows a device for the storage and dispensation of paint, paint dispenser  2  which prevents the paint form drying out or being contaminated when it is opened, and allows for metered dispensation of the paint. 
     FIG. 2B shows a cross sectional view of the device shown in FIG.  2 A. 
     FIG. 2C shows the device shown in FIG. 2A with a cup that fills with paint and is suitable for dipping a brush in. 
     FIG. 2D shows cross sectional view of a simplified device for the storage and dispensation of paint, simplified paint dispenser  2   d , which prevents the paint from drying out or being contaminated when it is opened, and allows for metered dispensation of the paint. 
     FIG. 2E shows a cross sectional view of a simple pump dispenser device, paint dispenser pump  2   e , for the storage and dispensation of paint which prevents the paint from drying out or being contaminated when it is opened. 
     FIG. 2F shows a reversed paint dispenser pump  2   e , the device of FIG. 2E, with reversed usable material and displacement matter chambers. 
     FIG. 3A shows a device for the storage and dispensation of toothpaste, improved toothpaste tube  3 , that always squeezes out paste as if the device were full. 
     FIG. 3B shows a cross sectional view of the device show in FIG.  3 A. 
     FIG. 3C shows a device for the storage and dispensation of toothpaste, more convenient improved toothpaste tube  3   c , that always squeezes out paste as if device were full. 
     FIG. 3D shows a cross sectional view of the device shown in FIG.  3 C. 
     FIG. 4A shows a device for the prolonged storage of dry foodstuffs, cereal saver  4 , that would absorb atmospheric water if given the chance. 
     FIG. 4B shows a cross sectional view of the device shown in FIG.  4 A. 
     FIG. 5A shows a device for the pressurized dispensation of penetrating oil, oil dispenser  5 , in an upward direction and any other direction. 
     FIG. 5B shows a cross sectional view of the device show in FIG.  5 A. 
     FIG. 6A shows a device for calk, calk dispenser  6 , that improves the longevity of the unused portion. 
     FIG. 6B shows a cross sectional view of the device show in FIG.  6 A. 
     FIG. 7A shows a device for fuel, fuel device  7 , that has no explosive air, doesn&#39;t slosh, doesn&#39;t condense water, and serves as a fuel pump. 
     FIG. 7B shows a cross sectional view of the device show in FIG.  7 A. 
     FIG. 8A shows a device for gasses, emptying gas cylinder  8 , that can be almost completely emptied of gas. 
     FIG. 8B shows a cross sectional view of the device show in FIG.  8 A. 
     FIG. 9A shows a device, an industrial vat  9 , for the preparation and dispensation of pharmaceutical materials that are air sensitive. 
     FIG. 9B shows a cross sectional view of the device show in FIG.  9 A. 
     FIG. 10A shows a retrofit volumetric displacement device  10  for preventing volatile liquids from vaporizing in their containers. 
     FIG. 10B shows a cross sectional view of the device show in FIG.  10 A. 
    
    
     FIG. 1A, FIG. 1B, FIG. 1C, FIG. 1D, FIG. 1E, {FIG. 1I, FIG. 1J, FIG. 1K, FIG. 1L, FIG. 1O, FIG. 1P, FIG. 1Q, FIG. 1R, FIG. 1S, FIG. 1T, FIG. 1U, FIG. 1W, FIG. 1X, FIG.  1 Y}. Soda Saver  1 , Beer Saver  1   c , Wine Saver  1   d  {, Cap Controlled Soda Saver  1 . 1 , Air Pump Soda Saver Fountain  1 . 2 , Free Floating Retro-Fit Soda Saver  1 . 3 , Retro Fit Tube Fit Soda Saver  1 . 4 , Concentric Soda Saver  1 . 5 }. Reference Numerals in Drawings. 
       1  soda saver 
       1   c  beer saver 
       1   d  wine saver 
       1 . 1  Cap Controlled Soda Saver 
       1 . 1   a  Cap Controlled Soda Saver by Interference Lip 
       1 . 2  Air Pump Soda Saver Fountain 
       1 . 3  Free Floating Retro-Fit Soda Saver 
       1 . 4  Retro Fit Tub Fit Soda Saver 
       1 . 5  Concentric Soda Saver 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       18   c  usable material female neck threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       26  displacement matter neck lip 
       28  displacement partition 
       29  displacment partition neck 
       30  displacement partition passageway 
       31  displacement partition seam 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageway 
       46  usable material chamaber 
       48  displacement matter chamber 
       50  soda 
       50   c  beer 
       50   d  wine 
       52  water 
       52   a  air 
       52   d  conventional glass marbles 
       54  crushed ice 
       56  usable material full level 
       57  CO 2  gas bubble 
       58  displacement matter full level 
       60  usable material cap 
       60   c  conventional petcock 
       62  usable material cap female threads 
       64  usable material cap seal 
       66  displacement matter cap 
       66   d  cork 
       68  displacement matter cap female threads 
       69  cap interference lip 
       70  displacement matter cap seal 
       72  boot 
       90  conventional drinking glass 
       95  conventional faucet 
       200  conventional soda bottle at pump 
       205  conventional soda bottle air pump plunger 
       210  soda bottle fountain adaptor 
       215  soda bottle fountain adaptor female threads 
       220  soda bottle fountain adaptor seal 
       225  soda bottle fountain adaptor barb 
       230  soda bottle fountain adaptor passageway 
       235  conventional vinyl hose 
       240  conventional hose clamp 
       245  conventional soda fountain faucet nozzle 
       300  vent 
       305  vent tube 
       400  tube to bottle adaptor 
       405  tube to bottle adaptor female threads 
       410  tube to adaptor seal 
       420  displacement matter neck to partition male threads 
       425  displacement matter neck to partition coupler 
       430  displacement matter neck to partition coupler female threads 
       435  displacement matter neck to partition coupler seal 
       500  displacement matter neck stabilizing member 
     FIG. 1F, FIG. 1G, FIG.  1 H. Reversed Soda Saver  1 , Reversed Beer Saver  1   c , Reversed usable material, displacement matter chambers. Reference Numerals in Drawings. 
       1  reversed soda saver 
       1   c  reversed beer saver 
       12  container 
       14  displacement matter neck 
       16  displacement matter passageway 
       18  displacement matter neck male threads 
       18   c  displacement matter neck female threads 
       20  usable material neck 
       22  usable material neck passageway 
       24  usable material neck male threads 
       26  usable material neck lip 
       28  displacement partition 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  usable material passageway 
       46  displacement matter chamber 
       48  usable material chamber 
       50  water 
       52  soda 
       52   c  beer 
       54  crushed ice 
       56  displacement matter full level 
       58  usable material full level 
       60  displacement matter cap 
       60   c  conventional water tap 
       62  displacement matter cap female threads 
       64  displacement matter cap seal 
       66  usable material cap 
       66   c  conventional beer tap 
       68  usable material cap female threads 
       70  usable material cap seal 
       72  boot 
     FIG. 2A, FIG. 2B, FIG. 2C, FIG. 2D, FIG.  2 E. Paint Dispenser  2 , Simplified Paint Dispenser  2   d , Paint Dispenser Pump  2   c . Reference Numerals in Drawings. 
       2  paint dispenser 
       2   d  simplified paint dispenser 
       2   c  paint dispenser pump 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displament partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  paint 
       52  water 
       56  usable material full level 
       58  displacement matter full level 
       60  usable material cap 
       60   e  conventional faucet 
       62  usable material cap female threads 
       64  usable material cap seal 
       66  displacement matter cap 
       66   e  conventional water tap 
       67  conventional pressurized tap water system 
       68  displacement matter cap female threads 
       70  displacement matter cap seal 
       72  access lid 
       74  access lid female threads 
       76  access lid seal 
       78  access lid passageway 
       80  access lid clamp female threads 
       82  access lid lip 
       84  displacement tube 
       86  displacement tube passageway 
       88  displacement tube seal 
       90  displacement tube male threads 
       92  displacement tube cap male threads 
       94  spout 
       96  spout passageway 
       98  spout female threads 
       100  spout lip 
       102  spout seal 
       104  conventional valve 
       106  spout male threads 
       110  paint brush cup 
       112  cup passageway 
       114  cup female threads 
       116  cup seal 
       118  25 liter water 
     FIG.  2 F. Paint Dispenser, Simplified Paint Dispenser, Paint Dispenser Pump with Reversed Usable Material and Displacement Matter Chambers, Reference Numerals in Drawings. 
       2   e  reversed paint dispenser pump 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       42  displacement partition adhesive 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  paint 
       52  water 
       56  usable material full level 
       58  displacement matter full level 
       60   e  conventional faucet 
       66   e  conventional water tap 
       67  conventional pressurized tap water system 
       84  displacement tube 
       86  displacement tube passageway 
     FIG. 3A, FIG. 3B, FIG. 3C, FIG.  3 D. Improved Toothpaste Tube  3 . More Convenient Improved Toothpaste Tube  3   c . Reference Numerals in Drawings. 
       3  improved toothpaste tube 
       3   c  more convenient improved toothpaste tube 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       26  displacement matter neck lip 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageways 
       46  usable material chamber 
       48  displacement matter chamber 
       50  toothpaste 
       52  water 
       56  usable material full level 
       58  displacement matter full level 
       60  usable material cap 
       62  usable material cap female threads 
       64  usable material cap seal 
       66  displacement matter cap 
       68  displacement matter cap female threads 
       70  displacement matter cap seal 
       72  tube bottom seal 
       74  conventional syringe 
     FIG. 4A, FIG.  4 B. Cereal Saver  4 . Reference Numerals in Drawings. 
       4  cereal saver 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       34  grommet 
       36  grommer passageway 
       42  displacement partition adhesive 
       44  displament matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  dry cereal 
       52  air 
       56  usable material full level 
       60  usable material cap 
       62  usable material cap female threads 
       64  usable material cap seal 
       66  conventional clamp 
       74  vent 
     FIG. 5A, FIG.  5 B. Oil Dispenser  5 . Reference Numerals in Drawings. 
       5  oil dispenser 
       11  container neck 
       12  container 
       13  container neck passageway 
       14  usable material neck 
       15  container stopper usable material passageway 
       16  usable material passageway 
       17  container stopper 
       19  container stopper displacement matter passageway 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       26  displacement matter neck lip 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp fitting female threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  penetrating oil 
       52  grease 
       58  displacement matter full level 
       60  usable material convention valve 
       61  nozzle 
       62  nozzle passageway 
       66  conventional grease fitting 
       72  conventional clamp 
     FIG. 6A, FIG.  6 B. Calk Dispenser  6 . Reference Numerals in Drawings. 
       6  calk dispenser 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       28  displacement partition 
       32  displacement partition seal 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  calk 
       52  grease 
       60  usable material cap 
       66  conventional grease fitting 
       72  container end 
       74  adhesive 
     FIG. 7A, FIG.  7 B. Fuel Device  7 . Reference Numerals in Drawings. 
       7  fuel device 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       26  displacement matter neck lip 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  gasoline 
       52  air 
       56  usable material full level 
       60  usable material cap 
       62  usable material cap female threads 
       64  usable material cap seal 
       66  conventional air pump 
     conventional fuel line attachment 
     FIG. 8A, FIG.  8 B. Emptying Gas Cylinder  8 . Reference Numerals in Drawings. 
       8  emptying gas cylinder 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       24  displacement matter neck male threads 
       26  displacement matter neck lip 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement matter passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  gas 
       52  water 
       60  conventional regulator 
       66  displacement matter cap 
       68  displacement matter cap female threads 
       70  displacement matter cap seal 
     FIG. 9A, FIG.  9 B. Industrial Vat  9 . Reference Numerals in Drawings. 
       9  industrial vat 
       12  container 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter ncek passageway 
       24  displacement matter neck male threads 
       6  displacement matter neck lip 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition flange 
       34  displacement partition clamp 
       36  displacement partition clamp passageway 
       38  displacement partition clamp female threads 
       40  displacement partition clamp male threads 
       42  displacement partition flange adhesive 
       44  displacement material passageway 
       46  usable material chamber 
       48  displacement matter chamber 
       50  pharmaceutical preparation 
       51  solid capsules 
       52  water 
       56  usable material full level 
       58  displacement matter full level 
       60  conventional material pump 
       66  conventional one way valve 
       68  conventional water reservoir 
       70  conventional petcock 
       72  access lid 
       74  access lid female threads 
       76  access lid seal 
       78  access neck 
       80  access neck passageway 
       82  access neck male threads 
       92  conventional submersible impeller 
       94  conventional submersible heater 
       96  conventional cooling device 
       98  conventional through container wire fitting and wires 
       99  conventional through container pipe fittings and pipes 
     FIG. 10A, FIG.  10 B. Retrofit Volumetric Displacement Device  10 . Reference Numerals in Drawings. 
       10  retrofit volumetric displacement device 
       11  tank cap female threads 
       12  tank cap 
       13  tank cap seal 
       14  usable material neck 
       16  usable material passageway 
       18  usable material neck male threads 
       20  displacement matter neck 
       22  displacement matter neck passageway 
       28  displacement partition 
       29  displacement partition neck 
       30  displacement partition passageway 
       32  displacement partition connector 
       34  conventional hose clamp 
       36  displacement partition connector passageway 
       38  displacement partition extension 
       40  displacement partition extension passageway 
       44  displacement matter passageway 
       48  displacement matter chamber 
       52  air 
       60  usable material cap 
       62  usable material cap female threads 
       64  usable material cap seal 
       72  conventional fuel tank 
     The following terms are introduced of the purpose of making the invention easier to understand. 
     “Container” generally refers to the outer storage vessel that holds contents. 
     “Environment” generally refers to the universe external to the container, typically atmospheric air although other environments are possible. 
     “Usable Material” generally refers to the typically valuable contents of the container that are generally usable and consumed. It can also refer to waste in a waste disposal system. 
     “Volumetric Displacement Matter, Displacement Matter” generally refers to matter that is added to the contents of the bottle for the purpose of altering the characteristics of the container&#39;s fill state, generally in such a manner so as to not contaminate the usable material. 
     “Volumetric Displacement Device” generally refers to embodiment of the invention described in this application. 
     “Fill State” generally refers to the nature of the container&#39;s contents, generally in terms of the amount of material and or matter the container holds. For example a container may be thought of as full, partially full, or empty. The word generally is used because scientifically speaking, the container is always full of something. For example, when describing a container containing half air and half water by volume, the container is said to be, and behaves as if, it were half full. Filling a container, in this instance, generally means to replace something not wanted in the container, that came into the container form the environment (air for example), with something that is more desirable, such as more usable material or displacement matter. 
     “Full Fill State” generally refers to a condition of a container where the void of the container is devoid of unwanted matter. In general, the container is said to have a “full fill state” when for practical purposes, the container is full of either usable material or displacement matter, the latter which may be contained in an displacement matter chamber within the container. In general, the container will hold no more at this point. 
     “Displacement Partition, Mobile Displacement Partition” generally refers to a partition that physically separates the container into regions, one that contains the displacement matter, and one that contains the usable material, hereby referred to as the displacement matter chamber and the usable material chamber, respectively. “Mobile” refers to the displacement partition that can move relative to the container. Such motion generally could cause a change in the volume of the displacement matter chamber and the usable material chamber, while the overall volume of the container remained constant. 
     “Contents” generally refers to the sum of all matter in the container including usable material, displacement matter, and the displacement partition. 
     “Displacement Matter Chamber” generally refers to the region of the container that contains the displacement matter. 
     “Usable Material Chamber” generally refers to the region of the container that contains the usable material. 
     “Immiscible” generally refers to two or more materials, matter which of the most part do not mix and do not significantly react with each other. 
     “Rigid” generally refers to matter, material used either as contents or in structure, that does not deform. 
     “Flexible” generally refers to matter, material used either as contents or in structure, that will bend, but that does not stretch appreciably. A flexible container has relevance to the volumetric displacement device because it has a maximum internal volume which, unless the container is deformed by an external force, will remain constant. For example, a one liter plastic soda bottle will not attain an internal volume greater than one liter regardless of the internal pressure applied to it, within the pressure limits that deform the plastic, although squeezing the bottle could diminish the volume. A toothpaste tube when squeezed has a diminished volume, which is what causes the paste to be dispensed. 
     “Elastic” generally refers to matter, material either as contents or in structure, that will change size under tension, stress or pressure. Containers made of elastic material will not have a fixed volume. 
     “Non-Elastic” generally refers to matter, material that will not stretch, and can be either rigid or flexible. 
     “Non-rigid Solid” generally refers to matter, material in the solid phase that is broken up, such as grains, toasted cereals, potato chips, spices, crushed ice or powders. 
     “Multiple Components” generally refers to matter, material that is made up of two or more different matters or materials, either in the same physical state or in different physical states, those states being liquid, gas, and solid. 
     “Effervescent Liquid” generally refers to a liquid that has a gas, typically CO 2 , dissolved in it. 
     “Gas Impermeable” generally refers to material typically forming the displacement partition, which generally can not be penetrated by gas, or that slows the transfer of gas to a degree from one side of the material to the other side of the material. A gas impermeable partition serves as a barrier to the movement of gas across that partition. 
     “Metering” generally refers to the process of measuring out a specific amount of material. 
     “Bi-directional Transfer”, “Transferred in a Bi-directional Manner” generally refers to moving material from one location to another in either direction. Bi-directional transfer of usable material between container and environment would allow for both putting usable material into a container and taking it out of a container. 
     “Valved Flow control” generally refers to the ability to variably regulate the flow of material through a point, such control being exemplified generally by the use of a valve, tap, or faucet. 
     “Directional Flow Control” refers to the ability to direct the flow of a material through material casings such as pipes, tubes or fluid reserviours which are generally external to the container. “Directional flow control” 0  devices generally direct the flow of material as input or output to the displacement matter chamber or the usable material chamber by physically connecting, directly or indirectly, to the container. 
     “Environmentally Sensitive” generally refers to usable material or environment that benefits from the condition of the usable material being isolated from the environment, which can be the atmosphere for example, either because the environment is damaged by contact with the usable material, or the usable material is damaged by contact with the environment. The environment can be other baths such as water, or space. By way of illustration, volatile toxic chemicals pollute our atmosphere and are said to be “environmentally sensitive”. Air sensitive usable material can be damaged by exposure to air in the atmosphere and thus the air sensitive usable material is also said to be “environmentally sensitive”. 
     DISCLOSURE OF INVENTION 
     The volumetric displacement device generally provides a means to fill a container with alternate matter so as to provide the benefits of a full container when the contents of that container have been partially consumed, utilized or emptied. Such benefits include longevity of the remaining contents, better management and dispensing of the contents, resource conservation, and hazard, environmental pollution and health risk reduction. 
     MODES FOR CARRYING OUT INVENTION 
     Effervescent Beverage Storage and Dispensing. A Soda Saving Device. Soda Saver  1 . Component Description of Soda Saver  1 . 
     FIG. 1A shows a perspective view of a volumetric displacement device, an effervescent beverage storage device, soda saver  1 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. FIG. 1B shows a cutaway view of the device shown in FIG.  1 A. Referring to FIG.  1 A and FIG. 1B except where noted, the soda saver  1  is constructed. 
     A bottle, container  12  of one piece, is formed of non-stretching plastic. The container  12  is similar in construction in both size and material to a conventional plastic soda bottle except that it has two necks. 
     A usable material neck  14  is formed from the material of the container  12 , as part of the container  12 , so that the plastic forms a usable material passageway  16  within the usable material neck  14 . 
     A set of usable material neck male threads  18  are formed from the plastic of, and as part of, the usable material neck  14 . 
     A displacement matter neck  20  is formed from the material of the container  12 , as part of the container  12 , so that the plastic forms a displacement matter neck passageway  22  within the displacement matter neck  20 . 
     A set of displacement matter neck male threads  24  are formed form the plastic of, and as part of, the displacement matter neck  20 . 
     A displacement matter neck lip  26  is formed from the plastic of, as part of, and at the top of, the displacement matter neck  20 . 
     A displacement membrane, bladder, displacement partition  28  of one piece is constructed of an aluminized polyester membrane, the same material typically found in Mylar® balloons. The displacement partition  28  is constructed as an air tight bag, similar in construction to a conventional Mylar® balloon, in a shape that is roughly the same size and shale as the interior of the container  12 . The shape of of the usable material neck  14  is not imitated. 
     A displacement partition neck  29  is formed from the material of, and as part of, the displacement partition  28 . The size of the displacement partition neck is such that it will fit within the displacement matter neck passageway  22 . 
     The Mylar® for the displacement partition neck  29  forms a displacement partition passageway  30  within the displacement partition neck  29 . 
     A displacement partition flange  32  is formed from the plastic of, as part of, and at the top of, the displacement partition neck  29 . The displacement partition flange  32  has roughly the same diameter, inside and outside, as the top of the displacement matter neck lip  26 . 
     The displacement partition neck  29  is inserted into the displacement matter neck passageway  22  and the displacement partition flange  32  comes to rest on the displacement matter neck lip  26 , as shown. 
     A displacement partition clamp  34  of one piece is formed from plastic. The displacement partition clamp  34  is similar in construction in both size and material to a conventional plastic soda bottle cap, except that it has a passageway through it and two sets of threads. 
     The plastic for the displacement partition clamp  34  forms the displacement partition clamp passageway  36  within the displacement partition clamp  34 . 
     A set of displacement partition clamp female threads  38  are formed from the plastic of, and as part of, the displacement partition clamp  34 . The threads are formed in such a manner that they mate securely with the displacement matter neck male threads  24 . 
     A set of displacement partition clamp male threads  40  are formed from the plastic of, and as part of, the displacement partition clamp  34 . 
     The displacement partition clamp  34  is securely screwed onto the displacement matter neck  20 , as the displacement partition clamp female threads  38  firmly engage the displacement matter neck male threads  24 . 
     In so doing, the displacement partition flange  32  is securely clamped between the displacement partition clamp  34  and the displacement matter neck lip  26 . The joint is permanently sealed with the silicon cement, displacement partition flange adhesive  42 , which is applied to both sides of the displacement partition flange  32 , and contacts both the displacement matter neck lip  26 , and the displacement partition clamp  34 , creating a secure, air tight junction. 
     A bottle top, usable material cap,  60  of one piece, is formed of non-stretching plastic. The usable material cap  60  is similar in construction in both size and material to a conventional plastic soda bottle cap. 
     A set of usable material cap female threads  62  are formed from the plastic of, and as part of, the usable material cap  60 . The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     The usable material cap  60  is fitted with a usable material cap seal  64 , which is a thin disk of silicon rubber. The usable material cap seal  64  serves to tightly seal the usable material passageway  16  when the usable material cap  60  is securely screwed onto the usable material neck  14 , as the usable material cap female threads  62  firmly engage the usable material neck male threads  18 . 
     A bottle top, displacement matter cap,  66  of one piece, is formed of non-stretching plastic. The displacement matter cap  66  is similar in construction in both size and material to a conventional plastic soda bottle cap. 
     A set of displacement matter cap female threads  68  are formed from the plastic of, and as part of, the displacement matter cap  66 . The threads are formed in such a manner that they mate securely with the displacement partition clamp male threads  40 . 
     The displacement matter cap  66  is fitted with a displacement matter cap seal  70 , which is a thin disk of silicon rubber. The displacement matter cap seal  70  serves to tightly seal the displacement matter neck passageway  22  when the displacement matter cap  66  is securely screwed onto the displacement partition clamp  34 , as the displacement matter cap female threads  68  firmly engage the displacement partition clamp male threads  40 . 
     A boot  72  of one piece is formed from plastic. The boot  72  is similar in construction in both size and material to a conventional plastic soda bottle boot, and is permanently bonded to the container  12  in conventional fashion. The boot serves as a stand for the soda saver  1 , allowing it to stand on a horizontal surface without falling. 
     Assembly Description of Soda Saver  1 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement partition passageway  30 , and the displacement partition clamp passageway  36 . 
     The displacement partition  28  divides the container  12  into two chambers. The first chamber is a usable material chamber  46  which will hold usable material, in this case an effervescent beverage, soda  50 . The second chamber is a displacement matter chamber  48  which will hold displacement matter, non-compressible matter, water  52 . 
     The usable material chamber  46  is accessed by the usable material passageway  16 , which is used to put soda  50  into and to take soda  50  out of the usable material chamber  46 . The volume of space contained in the usable material passageway  16 , is part of the space defined by the usable material chamber  46 . 
     The displacement matter chamber  48  is accessed by the displacement matter passageway  44 , which is used to put water  52  and crushed ice  54  into and out off the displacement matter chamber  48 . The volume of space contained in the displacement matter passageway  44 , is part of the space defined by the displacement matter chamber  48 . 
     Device Description of Soda Saver  1 . 
     The container  12 , and the soda saver  1 , must have a fixed maximum internal volume. If the material of the container  12 , displacement partition clamp  34 , and the caps is rigid, the soda saver  1  will have an internal volume that will not change appreciably. If the material is flexible, but not elastic, the soda saver  1  will have a maximum attainable volume, even if the internal pressure in the bottle rises above atmospheric pressure. Furthermore, the maximum volume should be attained in the normal position of the material of the container. This means that the container can not be made of an elastic material or the container will expand (blow up) as the CO 2  gas is released from the soda. Conventional plastic soda bottles, in fact all effervescent storage vessels, conform to the rules of this paragraph. Fixed internal volume is critical in preventing the release of the CO 2  gas from the soda  50 . 
     The construction of the soda saver  1  dictates that the displacement matter chamber  48  be completely isolated from the usable material chamber  46  by the displacement partition. No matter of any sort, solid, liquid or gas can traverse the barrier between the chambers. With the caps, usable material cap  60  and displacement matter cap  66  in place, the displacement matter chamber  48  and the usable material chamber  46  are also isolated from the environment. No matter of any sort, solid, liquid or gas, can enter or leave either chamber. The caps can be removed and replaced to operate the soda saver  1 . 
     It is imperative that the displacement matter be non-compressible in this particular embodiment. It is a well known fact that Water  52  is virtually non-compressible. If the displacement matter were to compress, gas would be allowed to escape the soda  50  as the space became available for the CO 2  gas. The soda  50 , being primarily water with other material dissolved, is already relatively non compressible. Crushed ice will shrink just a bit if it melts thereby reducing the efficiency of the soda saver, just a bit. This effect is negligible. 
     FIG. 1B depicts the displacement partition  28  that is partially collapsed, being only partially filled with water  52 . The usable material chamber  46  is also depicted as being partially filled with soda  50 . In all, the soda  50 , the water  52 , and the displacement partition  28 , completely fill the container  12 . A usable material full level  56 , is shown which demonstrates where the level of the soda  50  will be when the soda saver  1  is in a full fill state. A displacement matter full level  58 , is shown which demonstrates where the level of water  52  will be when the container is in a full fill state. With the caps off the soda saver  1 , the level of the soda and the level of the water will equilibrate as the mobile partition moves in response to gravitational forces on the water and soda. After soda  50  has been removed from the soda saver  1 , if enough water  52  is added to the displacement matter chamber  48 , the level of fluid will rise in both chambers, until the soda saver  1  is in a “full fill state”. It is only in this full fill state that the effervescence in the soda  50  will be preserved. Soda  50  is preserved in the container having a full fill state although the container is only partially filled with Soda  50 . 
     How the Soda Saver  1  Works, Theory of Operation. 
     The Devise, Soda Saver  1 , as shown in FIG.  1 A and FIG. 1B, prevents a portion of soda  50 , beer, champagne or other effervescent liquid, of any quantity that can be physically contained in the usable material chamber  46 , from loosing its carbonation, and going flat in the next couple of days. The device provides for a means to fill the void in the container  12 , after the soda  50 , is partially consumed, so that the effervescent gas can no longer escape to the void above the soda  50 , as there no longer exists a void. Non-compressible matter, displacement matter, water  52 , is introduced via the displacement matter passageway  44  in a manner that fills the void, does not contaminate the soda  50 , does not absorb the CO 2  gas, and allows the effervescence in the soda  50  to be preserved for extended periods of time, thereby conserving the effervescent beverage and allowing for its enjoyable consumption at a latter time. 
     As an alternative technology, presented at this time to make this presentation clearer as well as to show alternate technology, non-compressible solid matter could be introduced to the container  12  as shown via the usable material passageway  16 , or even to conventional soda bottles (conventional soda bottles are currently sold, without two necks or displacement matter chambers) in a number of ways. For example, dropping conventional glass marbles into a conventional soda bottle until the bottle was almost “full” again, (the top of the soda level is brought almost to the top of the soda bottle,) would leave no place for CO 2  gas to escape the soda, and would allow the resealed bottle to properly store the soda again. This would prove to be inconvenient as the marbles must be cleaned, are difficult to manage, do not pour well, are heavy, and unless they are chilled, drive the CO 2  from the beverage very quickly as they heat it up before the top can be secured. 
     The volumetric displacement device&#39;s approach is more convenient for the consumer as all the consumer has to do is to put water into the displacement matter chamber  48  via the displacement matter neck  20 . Water is inexpensive, easily available, and non-compressible. The displacement partition  28 , a flexible, water tight, gas impermeable bladder, prevents the water from contaminating (diluting) the soda. The displacement partition  28  is secured in such a way that no water can enter the usable material chamber  46 , and no soda  50  can pass into the displacement matter chamber  48 . No CO 2  gas can get out of the usable material chamber  46 . The displacement matter  52  and the displacement partition  28  becomes an impermeable mass of matter in the container  12  and works just as the marbles did. After each partial consumption of the soda  50 , from the soda saver  1 , if enough water is added to the displacement matter chamber  48 , the container  12  will again be full, there will be little space for the CO 2  to re-pressurize, therefor it can not escape from the soda  50 , and the soda  50  will last for extended periods of time. 
     Ramifications of Soda Saver  1 . 
     As an additional benefit, the soda  50  will be prevented from sloshing as easily in the container. Shaking a conventional bottle of soda causes the soda to “froth up” and to spill out of the bottle when opened. A partially filled container sloshes more and froths to a greater extent. The displacement matter chamber  48  fills the soda saver  1 , reducing sloshing and frothing. Full soda bottles are more stable and tip over less easily. 
     The ability to add crushed ice  54  to the displacement matter chamber  48  is a benefit. The ice now can cool the soda  50  without diluting it with water. The unused portion of soda can be cooled with ice for extended periods of time and as the ice melts, the water so derived will not make the soda  50  “watery”, as would occur in conventional soda serving vessels. 
     Variation of Soda Saver  1 . 
     The soda saver  1  would work with virtually any effervescent beverage, carbonated drink. Beer, ale, lager, pilsner, champagne, seltzer, sparkling wines, sparkling waters, mineral waters, hard apply cider, carbonated wine coolers, spritzers, carbonated fruit drinks and punch, quinine water, root beer and effervescent beverages sold or known by other names would be protected from going flat in the soda saver and its variations. 
     Variations of the soda saver  1  would work with many different sized containers. A large application would be a beer keg which would readily accept the described technology. Large volumes of the effervescent beverages listed above such as beer, champagne, and soda could be dispensed in small portions for retail sale or distribution while the portions remaining in the container would be protected from decarbonation. 
     The container can be made in shapes currently found with existing soda, beer, champagne, wine, cooler and other effervescent beverages. Material that could be used include plastic, glass, metal and ceramic. 
     It would also be possible to replace the non-compressible matter with compressible matter such as air, and apply pressure to the displacement matter chamber at appropriate intervals by injection of more air into the displacement matter chamber  48  through the displacement matter passageway  44 , via a pump. For example, air pumped into the displacement matter chamber  48  in a beer keg would allow the beer to stay under pressure, would serve as a pressure source for dispensing the beer out the usable material passageway  16  fitted with a spigot, tap or valve, prevent the pressurized air pumped into the displacement matter chamber from being absorbed by the beer, prevent the CO 2  in the beer from mixing with the pumped in air, and prevent the CO 2  from dissipating from the beer, leaving the beer in a proper effervescent state, ready to deliver a good head, for extended periods of time. The beer is also easily dispensed via the valve, tap in the usable material passageway. In use, air at sufficient pressure in the displacement matter chamber, would function in similar fashion as compressible matter, thereby preserving the beer. 
     The addition of multiple materials to the displacement matter chamber  48 , for example water  52  and crushed ice  54 , will provide a tilling volume of displacement matter. The crushed ice will cool the soda. Furthermore, the cooled displacement partition  28  will inhibit the dissolution of the CO 2  gas into the beverage adjacent to the displacement partition  28 , as the displacement partition  28  is filled, and before the caps are placed back on the container  12 . This is an improvement because warmed soda can not hold in solution as much CO 2  gas, so if the soda is warmed by the bladder without the container sealed, extra gas will escape the soda. An additional benefit is that the drink can now be cooled without diluting it with water, a boon for beer and fine wine drinkers as well as others who want pure drinks. The use of a wide mouth displacement matter passageway  44  and displacement matter cap  66  would allow for easy insertion of the crushed ice  54 . If the beverage device was relatively small, the consumer could drink right from the soda saver  1 , undiluted, chilled beverage. If the consumer then decided to save a portion of the drink for latter consumption, the consumer could fill the displacement partition  28  with water, tightly cap the soda saver  1 , and store it. 
     The addition of insulation to the container would provide an effervescent beverage storage device that would maintain cold, undiluted, effervescent beverages for extended periods of time. Such insulation could be provided by a layer of insulation surrounding the container. It could also be proved by insulation material, or an evacuated vacuum space built into the walls of the container, such as those found on and in conventional thermal mugs and glasses. A portable, cooling, effervescent beverage saver could be brought to desk or picnic. 
     It is noted that one material suitable for the displacement partition would be a gas impermeable membrane such as Mylar® or other aluminized plastic. Mylar® prevents the escape of helium from balloons for extended periods of time, while a larger molecule, such as CO 2 , is prevented from crossing the membrane in superior fashion. Simple plastic membranes without aluminum coatings, when used to make the displacement partition  28 , allow CO 2  gas to cross between the chambers, thus leaving the effervescent beverage  50 , and carbonating the water serving as the displacement matter  52 . The use of an effervescent liquid as the displacement matter  52  does allow the displacement partition  28  to be made of gas permeable material. Furthermore, with such a gas permeable displacement partition, flat beverage could be rejuvenated by pouring the flat beverage into the usable material chamber  46  and pouring a relatively inexpensive effervescent liquid such as seltzer water, carbonated water, into the displacement matter chamber  48 . Rejuvenation of the flat beverage occurs because CO 2  passes from the displacement matter chamber  48 , across the gas permeable displacement partition, to the flat beverage stored in the usable material chamber  46 . An expensive beverage, such as a rare champagne, could be rejuvenated by putting an inexpensive champagne into the displacement matter chamber. In fact, in general, any beverage or water based liquid could be made effervescent with this technique. 
     Effervescent Beverage Storage and Dispensing. A Soda Saving Device, with Usable Material and Displacement Matter Chambers Reversed. Reversed Soda Saver  1 . Description of Reversed Soda Saver  1 . 
     FIG. 1F shows a perspective view of a volumetric displacement device, an effervescent beverage storage device, reversed soda saver  1 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. FIG. 1G shows a cutaway view of the device shown in FIG.  1 F. 
     The construction of the Reversed Soda Saver  1 , is identical to the Soda Saver  1  of FIG.  1 A and FIG.  1 B. It is exactly the same device. However, in operation, the effervescent beverage, soda  52 , is put into what was the displacement matter chamber  48 , of the soda saver  1  of FIG.  1 A,B and the displacement matter, water  50 , is put into what was the usable material chamber  46 , of the soda saver  1  of FIG.  1 A,B. 
     Because the function of the chambers is now reversed as compared to the chambers of the soda saver  1  of FIG.  1 A,B, by necessity, the name of the chambers are now reversed. What was entitled the usable material chamber is now the displacement matter chamber. The components of these chambers also have their names reversed as follows: 
     The usable material neck  14  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter neck  14 , of the device depicted in FIG.  1 G,F. 
     The usable material neck passageway  16  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter neck passageway  16 , of the device depicted in FIG.  1 G,F. 
     The usable material neck male threads  18  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter neck male threads  18 , of the device depicted in FIG.  1 G,F. 
     The displacement matter neck  20  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material neck  20 , of the device depicted in FIG.  1 G,F. 
     The displacement matter neck passageway  22  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material neck passageway  22 , of the device depicted in FIG.  1 G,F. 
     The displacement matter neck male threads  24  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material neck male threads  24 , of the device depicted in FIG.  1 G,F. 
     The displacement matter neck lip  26  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material neck lip  26 , of the device depicted in FIG.  1 G,F. 
     The displacement matter passageway  44  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material passageway  44 , of the device depicted in FIG.  1 G,F. 
     The usable material chamber  46  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter chamber  46 , of the device depicted in FIG.  1 G,F. 
     The displacement matter chamber  48  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material chamber  48 , of the device depicted in FIG.  1 G,F. 
     The usable material full level  56  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter full level  56 , of the device depicted in FIG.  1 G,F. 
     The displacement matter full level  58  of Soda Saver  1 , of the device depicted in FIG.  1 A,B becomes the usable material full level  58 , of the device depicted in FIG.  1 G,F. 
     The usable material cap  60  of Soda Saver  1 , of the device depicted in FIG.  1 A,B becomes the displacement matter cap  60 , of the device depicted in FIG.  1 G,F. 
     The usable material cap female threads  62  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter cap female threads  62 , of the device depicted in FIG.  1 G,F. 
     The usable material cap seal  64  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the displacement matter cap seal  64 , of the device depicted in FIG.  1 G,F. 
     The displacement matter cap  66  of Soda Saver  1 , of the device depicted in FIG.  1 A,G, becomes the usable material cap  66 , of the device depicted in FIG.  1 G,F. 
     The displacement matter cap female threads  68  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material cap female threads  68 , of the device depicted in FIG.  1 G,F. 
     The displacement matter cap seal  70  of Soda Saver  1 , of the device depicted in FIG.  1 A,B, becomes the usable material cap seal  70 , of the device depicted in FIG.  1 G,F. 
     Operation of Reversed Soda Saver  1 . 
     The reversed soda saver is operated in identical fashion to the Soda Saver  1  of FIG.  1 A,B. Following the directions given for that device will enable the user to operate the reversed soda saver  1 . 
     Ramifications of Reversed Soda Saver  1 . 
     The ramification of the reversed soda saver  1  is that the device can be operated in two fashions. The usable material can be either outside the displacement partition bladder or alternatively it can be inside the displacement partition bladder. In either case, filling the other chamber with non-compressible displacement matter, water, will put the entire container into the full fill state and the effervescent beverage will be protected. 
     Variations of Reversed Soda Saver  1 . 
     A wide variety of volumetric displacement device, including the ones to be presented in this patent application, will work with reversed chambers. Some require modifications, others do not. 
     Beer Saver  1   c,  Device Variation. 
     Component Description of Beer Save  1   c.    
     FIG. 1C shows a cutaway view of a volumetric displacement device, modified soda saver  1 , beer saver  1   c,  constructed as an embodiment of the volumetric displacement device that accomplishes objectives similar to soda saver  1 . Referring to FIG. 1C, except where noted, a beer saver  1   c  is constructed. 
     A container  12 , of one piece, is formed from glass or aluminum, a rigid material. The container  12  is similar in construction in both size and material to a conventional beer keg except that it is tapped at the lower side to accommodate a conventional petcock  60   c.  Construction of the beer saver  1   c  and its various parts is done in similar fashion to the soda saver  1  already described and depicted in FIG.  1 A and FIG. 1B except as noted. 
     The material of the container  12  forms usable material neck  14  which is located near the bottom of the container  12 , so that usable material in the keg can readily flow out of the usable material passageway  16 , which is formed from the material of the usable material neck  14 . Usable material neck female threads  18   c  are formed from the material of the usable material neck  14 . 
     A spigot and valve, tap, cock, stopcock, conventional petcock  60   c  is firmly fit and sealed to the container  12  in the usable material passageway  16 . 
     The usable material is beer  50   c.    
     Ramifications of Beer Saver  1   c.    
     The beer saver  1   c  has advantages over a standard conventional keg. 
     No air is introduced into the beer saver  1   c  as beer  50   c  is removed from it. Air contains oxygen and contaminates which can oxidize or otherwise damage beer. In a conventional beer keg, air is pumped into the keg. Specific gases dissolved in the beer such as CO 2  will diffuse into the pumped in air, as initially the air will have a lower partial pressure of the specific gases than the air would have after a period of time, that is, as the partial pressures of gas within the conventional keg moves towards a state of equilibrium. In the beer saver  1   c,  water is stored in a sealed, gas impermeable displacement matter chamber, which will not damage the beer. 
     The beer saver  1   c,  in its simplest configuration, is simpler than a conventional beer keg as it requires no pump. 
     The beer saver  1   c  has some advantages over conventional cans and bottles as they are used to store beer. When conventional cans and bottles are opened, the entire contents of the container must be used, typically, within a few hours or the beer will deteriorate. Unused beer will not deteriorate when some of the beer is removed from the beer saver  1   c.  It will not be contaminated with air. When the container is properly refilled with displacement matter or water, the effervescence will not be lost from the unused beer. 
     The ramification of the last paragraph is that beer  50   c  can be packaged more economically. Instead of storing a quantity of beer in a series of individually sized, single portion bottles, beer can be stored in a larger single container. For example, one gallon of beer is currently shipped in more than ten (10) bottles of twelve (12) ounces each. With the beer save  1   c,  this quantity could be shipped in a single container that need not be completely used at a single sitting. Two gallon, or even larger containers, would result in even greater savings. They would take less storage and refrigeration space as well, in comparison to conventional single portion beer containers, which are not as compact, as a whole, when stored. 
     Kegs of many fractional sizes would be inexpensive to produce. Kegs are currently made in half keg and quarter keg sizes. These and even smaller sizes could be produced. Convenient fractional sizes that fit in a conventional refrigerator would make consumption convenient, and reduce the cost to the consumer of drinking beer. In general, virtually any reasonable size could be made, reasonable determined by material strength, engineering limitations, and economic factors. 
     Use of different materials in the construction of the container would blur the boundary between keg and bottle or can definitions. Formed from glass, ceramic, metal or plastic, the containers could be constructed in a wide variety of shapes. 
     Additional internal pressure can be developed in variations of the beer saver  1   c.  A conventional pump can be used to force air and/or water into the displacement partition. If the beer at a certain temperature has more gasses than it can hold, the added pressure will increase its protection from carbonation loss. The pressure might also be used to pump the beer to a higher elevation, relative to the earth, than the top level of the beer in the container, or to pump the beer faster. This still provides an advantage over a conventional keg with a pump in that the unused beer will not be contaminated with air containing oxygen and contaminates. 
     Pressure to the displacement matter could be supplied by a conventional pump, by electric pump, by hand pump, by a conventional pressurized tap water system, by a gravity driven displacement tube as discussed in detail for the paint dispenser  2 , by a conventional compressed gas cylinder, tank, canister or CO 2  cartridge, or other pressure source. 
     Such pressure can also be supplied to the usable material chamber by fitting the usable material chamber with a pressure supplying device, pump, gas cylinder, gas cartridge, standard beer keg tap pump device or other pressure source. There is still advantage over conventional beer kegs as there would be less air or gas introduced to the beer, and less opportunity to spoil the beer. With a conventional beer tap/pump fitted to the usable material chamber, the beer would be pressurized and delivered in a conventional manner from a single opening in the keg. The filled or partially filled displacement matter chamber would still give benefit if properly utilized. For example, at the end of the day, when all the beer has not been used and its preservation is desired for future use, the displacement partition could be filled with water as the compressed air gas is removed from the usable material chamber. 
     A vent equipped with a controllable valve or cap at the top of the usable material chamber would provide enhanced storage capability. A small amount of effervescent gas can be expected to leave the effervescent liquid do to minor and uncontrollable expansions of an otherwise non-stretching container, and during the period of time when the displacement matter cap is off. This unwanted gas could be vented off through a sealable passageway that connects the top of the usable material chamber to the environment. With this vent open, pouring water into the displacement matter chamber would fill the container and drive off the unwanted gas. When the entire container, including vent, usable material passageway and displacement matter passageway, are resealed, the container will again be full of non-compressible matter and usable material, and the effervescent liquid will have its effervescence protected. 
     The beer saver  1   c  could be steam cleaned prior to the introduction of beer to sterilize its interior. With the beer saver variation with enough openings, steam would be run through the keg or around the keg to accomplish this purpose. 
     Virtually any effervescent beverage can be stored in the beer saver  1   c  including beer, ale, lager, champagne, seltzer, sparkling wines, sparkling water, mineral water, hard apple cider, carbonated wine coolers, spritzers, carbonated fruit drinks and punch, quinine water, root beer and effervescent beverages sold or known by other names. 
     There are a number of options available for filling the beer saver  1   c  with beer at the manufacturing facility. The beer could be transferred into the container  12  before the displacement partition  28  and the partition clamp  34  are installed. An alternate access neck and passageway could be formed from the material of the container and sealed with another cap, valve or flow control device. Thus beer can be introduced into the container through alternate openings in the container. 
     Effervescent Beverage Storage and Dispensing. A Beer Saving Device, with Usable Material and Displacement Matter Chambers Reversed. Reversed Beer Saver  1   c.  Description of Reversed Beer Saver  1   c.    
     FIG. 1H shows a cutaway view a volumetric displacement device, an effervescent beverage storage device, reversed beer saver  1   c,  constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. 
     The construction of the Reversed Beer Saver  1   c,  is similar to the Beer Saver  1  of FIG. 1 c.  However, in operation, the effervescent beverage, beer  52   c,  is put into what was the displacement matter chamber  48 , of the beer saver  1   c  of FIG.  1 C and the displacement matter, water  50 , is put into what was the usable material chamber  46 , of the beer saver  1   c  of FIG.  1 C. 
     Because the function of the chambers is now reversed as compared to the chambers of the beer saver  1   c  of FIG. 1C, by necessity, the names of the chambers are now reversed. What was entitled the usable material chamber is now the displacement matter chamber. The name changes are similar to the changes described above for the reversed soda saver  1 . 
     Water is introduced into the displacement matter chamber  46  via the displacement matter passageway  16  by a conventional water tap  60   c.  Beer is removed from the usable material chamber  48  via the usable material passageway  44  by a conventional beer tap  66   c.    
     Wine Saver  1   d,  Device Variation. 
     Component Description of Wine Saver  1   d.    
     FIG. 1D shows a perspective view of a volumetric displacement device, chemical saver, wine saver  1   d,  constructed as an embodiment of the volumetric displacement device, that protects its contents from being exposed to atmospheric air. FIG. 1E shows a cutaway view of the device shown in FIG.  1 D. Referring to all of FIG.  1 D and FIG. 1E except where noted, a wine saver  1   d  is constructed. 
     A container  12 , of one piece, is formed from glass, a rigid material. The container  12  is a conventional wine bottle with no modification. Cork  66   d,  a conventional wine bottle cork with no modification, is used to seal the container  12  in conventional fashion. Wine  50   d  is the usable material stored in the container  12 . 
     After partial consumption of wine  50   d  conventional glass marbles  52   d  are put into the container until the usable material fill level  56  comes to near the top of the usable material passageway  40 . The cork  66   d  is reinserted into the container  12 . The wine is protected from the atomosphere. There is little oxygen in the container  12  to oxidize the wine  50   d.    
     Ramifications of Wine Saver  1   d.    
     The wine saver  1   d  can be used to store virtually any liquid in its original container providing that the container will reasonably seal out the atmosphere. The material will have a reduced exposure to the atmosphere as the conventional glass marbles displace the air that comes into the container. 
     Conventional glass marbles of any size that will fit into the container will work, as will most matter that is immiscible with the wine or the particular usable material that is to be saved. A partially filled container of vinegar could have oil poured into it until the container was full. The sealed vinegar container would now be protected from the atmosphere. 
     Operation of Soda Saver  1 . 
     The beverage company, bottling company, fills the container with soda  50  via the usable material passageway  16 . Both caps, the usable material cap  60  and the displacement matter cap  66  must be removed from the container  12  during this process. This displacement partition  28  is not inflated prior to this operation and residual air left in the displacement matter chamber  48  will be expelled via the displacement matter passageway  44 , as the container  12  is filled. When the container is completely full of soda  50 , and the displacement matter chamber  48  is collapsed and devoid of most air, the soda  50  will surround the displacement partition  28  on all sides except near its point of attachment to the container  12 . In this condition the container  12  is tightly capped at both necks, and shipped to the consumer. 
     The preferred embodiment looks to the consumer like a regular soda or wine bottle except that it has two necks and container openings. A double necked bottle if you will. The usable material passageway  16 , usable material neck  14 , and usable material cap  60  function exactly the way a regular bottle would. The user removes the usable material cap  60 , leaving the displacement matter cap  66  in place and pours out or drinks directly from the soda saver  1 , the desired portion of soda  50 . After this partial consumption, the consumer removes the displacement matter cap  66 , does not replace the usable material cap  60 , and with both caps off, puts the container in a relatively vertical position. The consumer then fills the displacement matter chamber  48  with water  52 , and optionally, some crushed ice  54 , via the displacement matter passageway  44  until the container  12  is full. The displacement partition  28  is mobile, will move, and the level of liquids in both chambers will equilibrate. When the user observes that the level of liquid is near the top of both necks, as shown by the full displacement matter level  58  and the full usable material level  56 , the two necks of the container  12  are tightly capped, the contents possible refrigerated, and the soda  50  stored until the next utilization. 
     Operation of Beer Saver  1   c.    
     The beer brewer fills a sterile beer saver  1   c  at the manufacturing facility. The displacement matter cap  66  is removed. An attachment is made to the conventional petcock  60   c  which is opened. Beer is pumped through the usable material passageway  16  into the usable material chamber  46 . Air that is in the displacement matter chamber  48  will be forced out as the beer  50   c  fills the usable material chamber  46 . After filling, any residual air left in the displacement matter chamber  48  will be replaced with water  52  that is poured into the displacement matter passageway  44 . The displacement matter cap  66  is securely screwed back onto the displacement partition clamp  34  as it seals the displacement matter passageway  44 . The beer may be shipped to the consumer. 
     In use, the consumer first removes the displacement matter cap  66  from the cooled beer saver  1   c.  The consumer opens the conventional petcock  60   c  to let beer flow into a drink holding device, beer mug or glass. The petcock  60   c  is closed when enough drink is poured. The user pours enough water into the displacement matter passageway  44  to fill the displacement matter chamber  48  with water  52 . The displacement matter cap  66  is securely screwed back onto the beer saver  1   c  and the beer saver  1   c  is returned to the refrigerator for storage. 
     Effervescent Beverage Storage and Dispensing. A Cap Controlled Soda Saving Device  1 . 1 , modified so that the displacement matter chamber may not be opened without the usable material chamber being opened first. 
     Component Description of Cap Controlled Soda Saver  1 . 1 . 
     FIG. 1I shows a perspective view of a volumetric displacement device, an effervescent beverage storage device, cap controlled soda saver  1 . 1 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. The usable material chamber must be opened before the displacement material chamber can be opened because of cap interference. FIG. 1J shows a cutaway view of the device shown in FIG.  1 I. Referring to FIG.  1 I and FIG. 1J except where noted, the soda saver  1 . 1  is constructed. 
     The construction of the soda saver  1 . 1  is similar to the construction of the soda saver  1  except as noted. 
     The displacement partition clamp  34  is eliminated and instead, the displacement partition neck  29 , is bonded directly to the inside of the displacement matter neck  20 . The bond is made using Loctite “Quick Tite” Super glue. The seal is completed with Eclectic Products Inc. “Plumber&#39;s Goop”. 
     The necks, displacement matter neck  20  and usable material neck  14  are formed so that they are parallel to each other in the positions shown in FIG. 1.1. The side walls of the usable material cap  60  are thicker than those of a standard cap so that the cap interferes with the removal of the displacement matter cap  66  by its position. 
     Device Description of Cap Controlled Soda Saver  1 . 1 . 
     Soda Saver  1 . 1  has some advantages over Soda Saver  1 . The location of the two necks at the very top of the container  12  prevents an air bubble from being trapped at the top of the container as the caps are being closed. This increases the efficiency of the container as there is less air space above the liquids that has to be compressed. 
     Another advantage is that the usable material cap  60  overlaps the top edge of the displacement matter cap  60 . Pressure built up in the container from the release of CO 2  gas from the Soda can cause problems if the displacement matter cap  66  is removed while the usable material cap  60  is still in place. 
     In some instances, the user of the container might not elect to fill the displacement matter chamber  48  with water. If the displacement matter cap  66  is removed before the usable material cap  60 , the pressure built up in the usable material chamber  46  could force water out the displacement matter neck  20  creating an unwanted mess. In extreme cases that pressure could break the displacement partition  28 , burst the seal between the displacement partition and the displacement matter neck  42 , or even blow the displacement partition  28  out the displacement matter neck passageway  22 . Each of these events is undesirable. 
     If, however, the displacement matter cap  66  can not be removed because of the position of the unstable material cap  60 , these undesirable events can not occur. In addition, the displacement matter cap  66  must be put into place before both chambers can be sealed. This also prevents the CO 2  gas from forcing water to be expelled from the displacement matter chamber  48 . 
     Operation of Cap Controlled Soda Saver  1 . 1 . 
     The operation of the Soda Saver  1 . 1  is the same as for the Soda Saver  1 . The user is forced to operate the caps in the correct sequence with the Soda Saver  1 . 1 . 
     Cap Controlled Soda Saving Device with Interference Lip  1 . 1   a  Variation. 
     FIG. 1K shows a perspective view of a volumetric displacement device, modified cap controlled soda saver with interference lip  1 . 1   a,  constructed as an embodiment of the volumetric displacement device that accomplishes objectives similar to cap controlled soda saver  1 . 1 . FIG. 1L shows a cutaway view of the device depicted in FIG.  1 K. Referring to FIG.  1 K and FIG. 1L, except where noted, a cap controlled soda saver with interference lip  1 . 1   a  is constructed. 
     The construction and operation of the cap controlled soda saver with interference lip  1 . 1   a  is identical to that of the cap controlled soda saver  1 . 1  except as noted. The usable material neck  14  of the cap controlled soda saver with interference lip  1 . 1   a  is constructed so that it is at the same height as the displacement matter neck  20  when the soda saver  1 . 1   a  is in a vertical position as shown in FIG.  1 L and FIG.  1 K. With the two necks at an even height, no air bubble will form in either chamber as a result of air being trapped in one neck as the level of the fluids in the soda saver  1 . 1   a  equilibrates and the chambers are sealed. 
     An interference lip  69 , is formed at part of the displacement matter cap  66 . This lip prevents the displacement matter cap  66  from being removed before the usable material cap  60  in the same way that the positions of the caps in the cap controlled soda saver  1 . 1 . controlled the opening and closing of that container. Operation of cap controlled soda saver with interference lip  1 . 1   a  is identical to the operation of the cap controlled soda saver  1 . 1 . 
     Method of Use of Soda Saver  1 . 1   
     FIG.  1 I and FIG. 1J show a soda save  1 . 1  as it would be used for storage of soda. The soda saver  1 . 1  is in the full fill state and the soda is protected from going flat. Both the usable material cap  60  and the displacement cap  66  are securely screwed onto their appropriate necks, and the container  12  is sealed. 
     FIG. 1M shows the soda save  1 . 1  as soda is being removed from it in a manner suitable for consumption. It can be seen from the figure that the usable material cap is removed. The container  12  is tipped up and soda  50  is pouring from the usable material passageway  16  into a conventional drinking glass  90 . 
     FIG. 1N shows the soda save  1 . 1  as it is being prepared for storage of the remaining portion of soda. The soda saver  1 . 1  is in a vertical position. The usable material cap  60  and the displacement matter cap  66  are now both shown to be removed. Water  52  is pouring into the displacement matter neck passageway  22 . In this case, the water  52  is coming from a conventional faucet  95 . When full, this water will equilibrate in the two necks of the container. That is, the level of the water and the soda will be approximately the same relative to the earth. The container will be in the full fill state. 
     The usable material cap  60  and the displacement matter cap  66  are now screwed onto their respective necks. FIG. 1 I and FIG. 1J once again show the soda saver  1 . 1  in the full fill state and ready to be stored again. 
     Other Variation of Soda Saver  1 . 1   
     Water  52  can be poured into the displacement matter neck passageway  22  from a variety of sources. The water can be poured from another container such as a glass or pitcher. It can even be poured from another volumetric displacement matter container that is empty of soda, but still has water in it, possible that is already chilled. 
     It is noted that water used as displacement matter can be reused, in fact, it is energy efficient to use water that is already chilled. The water in the container that has no more consumable soda in it may also be consumed. This water is already chilled and convenient. 
     Various ridges and placement of the caps can be used to cause interference of the caps rather than by positioning one over the other exactly as shown. 
     FIG. 1O shows a perspective view of an Air Pump Soda Saver Fountain  1 . 2 , the device shown in FIG. 1K with a conventional soda bottle air pump and a conventional soda fountain faucet nozzle attached. 
     FIG. 1P shows a cross sectional view of the device shown in FIG.  1 O. 
     PET bi-layer construction variation 
     The soda savers presented in FIG. *** may also be constructed using Blow Molded Bi-Layer PET technology as described in Richter et al U.S. Pat. Nos. 5,433,347, 5,385,269, 5,383,576. This technology describes containers which are formed in multiple layers, bonded at the neck, and allowed to separate utilizing pressure. The main differences between the containers described are that both walls of a two layer pet container must be relatively pas impermeable, the walls need not ever be bonded together, the liquids may be poured from the container with a suitable pouring opening, the displacement matter may be poured into the container with a suitable pouring opening, the displacement matter opening as well as the usable material opening are re-sealable, suction is not required to remove the usable material, other suitable materials beside PET plastic may be used. 
     Effervescent Beverage Storage and Dispensing. An Air Pump Soda Saver Fountain  1 . 2   
     Component Description of Air Pump Soda Saver Fountain  1 . 2 . 
     FIG. 1O shows a perspective view of a volumetric displacement device, an effervescent beverage storage device, an air pump soda saver fountain  1 . 2 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. The usable material chamber must be opened before the displacement material chamber can be opened because of cap interference. FIG. 1P shows a cutaway view of the device shown in FIG.  1 O. Referring to FIG.  1 O and FIG. 1P except where noted, the air pump soda saver fountain  1 . 2  is constructed. 
     The construction of the air pump soda saver fountain  1 . 2  is identical to the construction of the cap controlled soda saver with interference lip  1 . 1   a  except as noted. 
     A soda bottle fountain adaptor  210  of one piece, is formed of rigid plastic. The displacement matter cap  66  is similar in construction to a conventional plastic soda bottle cap except that it has a passageway though it and a barb for attaching a hose to that passageway. 
     A set of soda bottle fountain adaptor female threads  68  are formed from the plastic of, and as part of, the soda bottle fountain adaptor  210 . The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     The soda bottle fountain adaptor  210  is fitted with a soda bottle fountain adaptor seal  220 , which is a thin disk of silicon rubber. The soda bottle fountain adaptor seal  220  serves to tightly seal the displacement matter neck passageway  22  when the soda bottle fountain adaptor  210  is securely screwed onto the usable material neck  14 , as the soda bottle fountain adaptor female threads  68  firmly engage the usable material neck male threads  18 . 
     A soda bottle fountain adaptor barb  225  is formed from the material of the soda bottle fountain adaptor  210 , as part of the soda bottle fountain adaptor  210 , so that the plastic forms a soda bottle fountain adaptor passageway  230  within the soda bottle fountain adaptor barb  225 . 
     A length of conventional vinyl hose  230  is pressed over the soda bottle fountain adaptor barb  225  secured with a conventional hose clamp  235 . A conventional soda fountain faucet nozzle  245  is pressed onto the other end of the conventional vinyl hose  230  and secured with a conventional hose clamp  235 . A soda bottle fountain  250  has now been constructed as depicted. 
     Either at the factory, or by the user at the point of consumption, the displacement matter cap  66  may be removed and replaced with a conventional soda bottle air pump  200 . Either at the factory, or by the user at the point of consumption, the usable material cap  60  may be removed and replaced with the soda bottle fountain  250 . 
     Operation of Air Pump Soda Saver Fountain  1 . 2 . 
     The air pump soda saver can be assembled at the factory, or the soda saver  1 . 1   a  can be purchased separately and the conventional soda bottle air pump and or the soda bottle fountain screwed on by the user. 
     The user must first pump up the pressure to deliver soda at the faucet nozzle. The first few drinks will require the user to pump and pour at pretty much the same time until an air reservoir is built up in the container. The user also of course has the option of simply pouring out the first drink or drinks he takes before the conventional soda bottle air pump  200  and/or the soda bottle fountain  250  are attached. 
     Once attached, the user does not remove the conventional soda bottle air pump  200  and/or the soda bottle fountain  250 . Each time a drink is taken via the faucet nozzle, the pressure is built up by operating the pump. If the user forgets to operate the pump, the CO 2  gas that accumulates as a bubble in the usable material chamber can be returned to the soda by pumping up the pressure with the conventional soda bottle air pump  200  and either waiting for the CO 2  gas to re-enter the beverage over time, or forcing it back in with a vigorous shake of the entire air pump soda saver fountain  1 . 2 . 
     After the beverage in the air pump soda saver fountain  1 . 2 . is consumed, the conventional soda bottle air pump  200  and/or the soda bottle fountain  250  are removed, cleaned and re-used on another soda save  1 . 1   a.    
     The air pump soda saver fountain  1 . 2  works best if the CO 2  gas bubble is not allowed to exit the soda bottle fountain  250 . For example, laying the bottle flat causes the CO 2  gas bubble to sit along the side of the container which is now up. The soda bottle fountain adaptor passageway  230  lies under the fluid so that only carbonated soda can exit the container and not any freed CO 2  gas. 
     Ramifications of Air Pump Soda Saver Fountain  1 . 2 . 
     A marvelous soda fountain dispenser has now been created that has a number of advantages over the soda saver previously described. The first advantage is that it can perform at higher efficiencies. Removing the cap from the soda saver  1  results in some loss of carbonation each time the container is opened. Although this loss is small in relation to a standard soda bottle, it is a loss that accumulates if the container is opened over and over again. In the air pump soda saver fountain  1 . 2 , any CO 2  gas that escapes the beverage accumulates in a gas bubble over the beverage. With the soda saver properly positioned, that gas does not exit the bottle when soda is removed. In fact, the air pressure built up in the displacement matter chamber will drive the CO 2  gas back into the soda thereby re-carbonating the soda. The result is the delivery of perfect, fully carbonated soda, every time, even if the user takes just a little bit out over and over again. The result has not been previously been achieved in an economical, convenient, and safe manner without the use of a CO 2  gas supply. 
     An air pump used on a standard container of soda is of little value. Although the pressure can easily be raised in the container, the CO 2  gas readily escapes the soda and “permeates” the block of compressed air over the soda. When the air is pumped in, it has too low a partial pressure of CO 2  gas, and the CO 2  gas of the beverage comes out of solution to raise the partial pressure of CO 2  gas in the air above the drink. The air pump looks like a good device, but is simply doesn&#39;t work very well. 
     This is all changed with the soda savers and other beverage savers presented in this application. The CO 2  gas in the drink is prevented from mixing with the compressed air by the gas impermeable displacement partition. The effective new displacement matter is a block of compressed air that has been isolated from the CO 2  gas of the drink. The conventional air pump now works. 
     Another improvement presented in the use of the conventional hand air pump in a conventional soda bottle is that every time the pump is removed to pour out another drink, all the vacant space must be repumped over and over again making a tedious pumping job. With the air pump soda saver fountain  1 . 2 , only that portion of the container where fresh beverage has been removed, must be pumped up. The pumped air that was previously pumped in is not removed. This results in an enormous amount of saved labor for the user. 
     Another advantage of the air pump soda saver fountain  1 . 2  is that it takes less energy to cool the compressed air than it does to cool the water used in the soda save  1 . 1 . Water unless it is chilled first, can warm the soda to some degree. The soda and the water must then be chilled by the refrigerator resulting in a delay for completely chilled soda. This delay is vastly reduced because the heat capacity of the air is so much lower than that of water. 
     The weight of the air pump soda saver fountain  1 . 2  is reduced as the beverage is used up. The water added to the soda saver  1  keeps it heavy through out use. 
     The air pump soda saver fountain  1 . 2  is convenient to use in dispensation. It lies flat in the refrigerator using up the back space of the refrigerator. Soda can be dispensed directly from the container without removing it from the refrigerator although pumping is required. 
     An economical means of obtaining good soda is also obtained. In general, the soda saver without the air pump and fountain head is inexpensive and disposable. In addition, the soda saver will work with water as described earlier and is a functional entity without the expense of a pump and soda fountain valve. The pump and fountain valve are more costly, but are reusable from soda saver to soda saver. A generally disposable means has been obtained to distribute the soda, which is in a volumetric disposable container, that is the combination of the outer container and the displacement partition, shipped and distributed with the caps on instead of the pump and fountain valve. 
     Variations of Air Pump Soda Saver Fountain  1 . 2 . 
     An air pump will work on the beer saver, with appropriately fitted beer balls, kegs, or with any other effervescent beverage container fitted with a volumetric displacement device. 
     Many other manners of pumping air will work. An electric air pump provides a convenient automated means for delivering compressed air. 
     Various configurations of pumps, pressure gauges, and air reservoir tanks can be utilized to supply air pressure to the air pump soda saver fountain. A pressure gauge can be utilized to measure the pressure applied to the displacement matter changer  48 . All sorts of hand pumps can be envisioned that make pumping of the air easier or more convenient. 
     Effervescent Beverage Storage and Dispensing. A Retro-Fit Free Floating Soda Saver  1 . 3   
       
     FIG. 1.3 depicts a soda saver device that can be used in a conventional re-sealable soda container. As such, when inserted into the conventional container and filled with non-compressible matter such as water, it prevents the CO 2  gas from exiting the effervescent beverage. 
     Description of Retro-fit Free Floating Soda Saver  1 . 3 . 
     FIG. 1Q shows a perspective view of a volumetric displacement device, an effervescent beverage storage device, Retro-fit Free Floating Soda Save  1 . 3 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. FIG. 1R, FIG.  1 S and FIG. 1T show a cutaway views of the device shown in FIG. 1Q gut in differing positions. Referring to FIG. 1Q, FIG. 1R, FIG. 1S, and FIG. 1T except where noted, the soda saver  1 . 3  is constructed. 
     A conventional PET plastic soda bottle, container  12  of one piece is utilized. 
     A conventional usable material neck  14  is formed from the material of the container  12 , as part of the container  12 , so that the plastic forms a usable material passageway  16  within the usable material neck  14 . 
     A set of usable material neck male threads  18  are formed from the plastic of, and as part of, the usable material neck  14 . 
     A displacement matter neck  20  is formed from plastic in a manner that is similar to conventional PET bottle necks except that there is no container attached during molding. The plastic forms a displacement matter neck passageway  22  within the displacement matter neck  20 . 
     A set of displacement matter neck male threads  24  are formed from the plastic of, and as part of, the displacement matter neck  20 . 
     A displacement membrane, bladder, displacement partition  28  is constructed of an aluminized polyester membrane, marvel seal  360  as produced by Ludlow Corporation. The displacement partition  28  is constructed as an air tight bag, similar in construction to a conventional Mylar R  balloon, in a shape that is roughly the same size and shape as the interior of the container  12 . Two pieces of marvel seal  360  are cut out to the shape shown in FIG. 1.3A of the displacement partitions  28 . A hot sealing iron at a temperature of approximately 325 degrees Fahrenheit is utilized to produce a displacement partition seal  31 . This seal goes about the edges of the marvel seal  360  pieces. The marvel seal  360  pieces form a displacement partition neck  29 , which has an opening, displacement partition passageway  30 , left at the top of the displacement partitions  28  to accept the end of the displacement matter neck  20 , which is glued into the displacement partition passageway  30  with displacement partition adhesive  42 . A good adhesive for experimental purposes is Plubmer&#39;s Goop, produced by Eclectic Products Inc. 
     A displacement partition flange  32  is formed from closed cell foam. A vent  300  is formed from the foam. A vent tube of plastic  305  is formed and pressed into the vent  300 . The displacement partition flange  32  is bonded to the displacement matter neck  32 . 
     A conventional bottle top, usable material cap,  60  of one piece, is utilized. 
     A set of usable material cap female threads  62  are formed from the plastic of, and as part of, the usable material cap  60 . The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     The usable material cap  60  is fitted with a usable material cap seal  64 , which is a thin disk of silicon rubber. The usable material cap seal  64  serves to tightly seal the usable material passageway  16  when the usable material cap  60  is securely screwed onto the usable material neck  14 , as the usable material cap female threads  62  firmly engage the usable material neck male threads  18 . 
     A bottle top, displacement matter cap,  66  of one piece, is formed of non-stretching plastic. The displacement matter cap  66  is similar in construction to a conventional plastic soda bottle cap. 
     A set of displacement matter cap female threads  68  are formed from the plastic of, and as part of, the displacement matter cap  66 . The threads are formed in such a manner that they mate securely with the displacement partition clamp male threads  40 . 
     The displacement matter cap  66  is fitted with a displacement matter cap seal  70 , which is a thin disk of silicon rubber. The displacement matter cap seal  70  serves to tightly seal the displacement matter neck passageway  22  when the displacement matter cap  66  is securely screwed onto the displacement partition clamp  34 , as the displacement matter cap female threads  68  firmly engage the displacement partition clamp male threads  40 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement partition passageway  30 , and the displacement matter neck passageway  22 . 
     The displacement partition  28 , when installed in the container, divides the container  12  into two chambers. The first chamber is a usable material chamber  46  which will hold usable material, in this case an effervescent beverage, soda  50 . The second chamber is a displacement matter chamber  48  which will hold displacement matter, non-compressible matter, water  52 . 
     The usable material chamber  46  is accessed by the usable material passageway  16 , which is used to put soda  50  into and to take soda  50  out of the usable material chamber  46 . The volume of space contained in the usable material passageway  16 , is part of the space defined by the usable material chamber  46 . 
     The displacement matter chamber  48  is accessed by the displacement matter passageway  44 , which is used to put water  52  into and out off the displacement matter chamber  48 . The volume of space contained in the displacement matter passageway  44 , is part of the space defined by the displacement matter chamber  48 . 
     FIG. 1B depicts the displacement partition  28  that is partially collapsed, being only partially filled with water  52 . The usable material chamber  46  is also depicted as being partially filled with soda  50 . In all, the soda  50 , the water  52 , and the displacement partition  28 , completely fill the container  12 . A usable material full level  56 , is shown which demonstrates where the level of the soda  50  will be when the soda saver  1  is in a full fill state. A displacement matter full level  58 , is shown which demonstrates where the level of water  52  will be when the container is in a full fill state. With the caps off the soda saver  1 , the level of the soda and the level of the water will equilibrate as the mobile partition moves in response to gravitational forces on the water and soda. After soda  50  has been removed from the soda saver  1 , if enough water  52  is added to the displacement matter chamber  48 , the level of fluid will rise in both chambers, until the soda saver  1  is in a “full fill state”. It is only in this full fill state that the effervescence in the soda  50  will be preserved. Soda  50  is preserved in the container having a full fill state although the container is only partially filled with soda  50 . 
     Operation of Retro-fit Free Floating Soda Saver  1 . 3 . 
     The operation of the Retro-fit Free Floating Soda Saver  1 . 3  is similar in function to the standard soda saver  1  already described. A standard PET bottle of soda is partially consumed. The soda saver  1 . 3  is empty, collapsed and the displacement partition  28 , rolled up to that the entire device can be inserted into the partially full conventional soda container  12 . 
     The saver  1 . 3  can not be made completely devoid of air and will have a tendency to float. As the displacement matter neck  20  rises, floating on the soda  50 , the user will be able to pull it up out the neck of the container  12 . The displacement matter cap  66  can now be removed. The container  12  and the soda saver  1 . 3  are now in the position as depicted in FIG. 1.3D. 
     Water is now poured directly into the displacement matter chamber  48  via the displacement matter neck  20  until the container is completely full of both water  52  and soda  50 . Air can vent from the usable material chamber  46  via the vent  300  and the vent tube  305 . The vent tube prevents water from entering the usable material chamber  46 . The displacement matter cap  66  is screwed onto the displacement matter neck male threads  24  to seal the displacement matter chamber  48 . 
     The soda saver  1 . 3  is forced down by the user submerging it in the soda  50 . The saver  1 . 3  is now in the position shown in FIG. 1.3C. The conventional soda container cap, usable material cap  60  is screwed onto the usable material neck male threads  18  thus sealing the container  12 , usable material chamber  46 . The device is now in the position shown in FIG. 1.3B. It can now be stored until next utilization without loss of carbonation. 
     For the user to obtain the next serving of soda, he unscrews the usable material cap  60 . The user then uses his finger to hold the soda saver  1 . 3  down in the position shown in FIG. 1.3C. With the usable material passageway  16  open and the displacement matter passageway  30  closed, the user may pour soda out of the container. 
     The cycle is repeated as the user now allows the soda saver  1 . 3  to float up, removes the displacement matter cap  66 , and puts more water  52  into the displacement matter chamber  48 . 
     Ramifications of Retro-fit Free Floating Soda Saver  1 . 3 . 
     It is now possible to save the contents of a conventional container of effervescent beverage. The soda saver  1 . 3  is reusable and can be used on numerous containers. 
     Variation of Retro-fit Free Floating Soda Saver  1 . 3 . 
     The Soda Saver  1 . 3  will work for any effervescent beverages, in a variety of re-sealable containers. 
     The soda saver device  1 . 3  and the container  12  will also work as a reversed chamber device, the claim to which is made by the provisions of the claim section and this portion of the specification. If soda is contained inside the free floating device  1 . 3  and water or other displacement matter is contained in the container  12 , an effective soda saver is also created and utilized. 
     Effervescent Beverage Storage and Dispensing. Retro-Fit Tube Fit Soda Saver  1 . 4 . 
     Component Description of Retro-Fit Tube Fit Soda Saver  1 . 4 . 
     FIG. 1U shows a perspective view of a volumetric displacement device, an effervescent beverage storage device. Retro-fit Tube Fit Soda Saver  1 . 4 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. FIG. 1V shows the Retro-fit Tube Soda Saver  1 . 4  installed in a conventional PET soda bottle with a standard air pump and a conventional soda fountain faucet nozzle. FIG. 1W shows a cutaway view of the device shown in FIG. 1V with caps in the off position. Referring to FIG. 1U, FIG. 1V, and FIG. 1W except where noted, the soda saver  1 . 4  is constructed. 
     A conventional PET plastic soda bottle, container  12  of one piece is utilized. 
     A single piece plastic tube to bottle adaptor  400  is formed from plastic. Formed from the plastic is a usable material neck  14 , a usable material passageway  16 , usable material neck male threads  18 , a displacement matter neck  20 , a displacement matter neck passageway  22 , displacement matter neck male threads  24 , tube to bottle adaptor female threads  405 , and a displacement matter passageway  44 . A tube to adaptor seal  410  of silicon rubber is formed. 
     A displacement partition  28  is formed as described earlier. It is clamped to the tube to bottle adaptor  400  with a displacement partition clamp  34 , and sealed with displacement partition flange adhesive  42 . 
     Device Description of Retro-fit Tube Fit Soda Saver  1 . 4   
     The displacement partition of the Retro-fit Tube Fit Soda Save  1 . 4  is furled and inserted into the conventional PET soda bottle, and the tube to bottle adaptor is screwed onto the bottle. When this is complete, a soda saver is created that is similar in function and operation to the soda savers already discussed. 
     Ramifications of Retro-fit Tube Fit Soda Saver  1 . 4   
     A reusable retro-fit soda saving device has been created which will fit re-usably on a conventional PET soda bottle. The device may be used with pump and faucet nozzle, or simply with water as the displacement matter as described earlier. The displacement partition bladder is disposable or can be used multiple times. 
     The displacement partition can be made in a removable and disposable fashion such that a new bladder can be attached for each use. Various types of attachments including a threaded adaptor bonded into the partition passageway would accomplish this function. 
     Effervescent Beverage Storage and Dispensing. A Concentric Soda Saving Device  1 . 5   
     Component Description of Reversed Soda Saver  1 . 5   
     FIG. 1X shows a top view of a volumetric displacement device, an effervescent beverage storage device, Concentric Soda Saver  1 . 5 , constructed as an embodiment of the volumetric displacement device, that prevents soda or other carbonated, effervescent beverages from going flat after their container has been opened. FIG. 1Y shows a cutaway view of the device shown in FIG.  1 X. Referring to FIG. 1X, FIG. 1Y, except where noted, the soda saver  1 . 5  is constructed. 
     A conventional PET plastic soda bottle, container  12  of one piece is utilized. 
     A displacement matter chamber  48  is blow molded from a flexible, gas impermeable, PET polymer. A displacement matter neck  20  is formed from plastic in a manner that is similar to conventional PET bottle necks except that there are four displacement matter neck stabilizing members  500  attached, formed from the plastic, as shown. The plastic forms a displacement matter neck passageway  22  within the displacement matter neck  20 . 
     A set of displacement matter neck male threads  24  are formed from the plastic of, and as part of, the displacement matter neck  20 . 
     The plastic that is molded to the description above, is used in a blow mold to form a flexible balloon shaped displacement partition  28 . 
     The displacement matter chamber  48  is inserted into the conventional PET soda bottle  12 . The displacement matter neck stabilizing members  500  are impulse fused to the inner wall of the conventional PET soda bottle neck. 
     A bottle top, displacement matter cap,  66  of one piece, is formed of non-stretching plastic. The displacement matter cap  66  is similar in construction to a conventional plastic soda bottle cap. 
     A modified conventional bottle top, usable material cap,  60  of one piece, is utilized. 
     A set of usable material cap female threads  62  are formed from the plastic of, and as part of, the usable material cap  60 . The cap is elongated as shown so that it will fit over the displacement matter cap  66  as shown. The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     The usable material cap  60  is fitted with a usable material cap seal  64 , which is a thin disk of silicon rubber. The usable material cap seal  64  serves to tightly seal the usable material passageway  16  when the usable material cap  60  is securely screwed onto the usable material neck  14 , as the usable material cap female threads  62  firmly engage the usable material neck male threads  18 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement partition passageway  30 , and the displacement matter neck passageway  22 . 
     The displacement partition  28 , when installed in the container, divides the container  12  into two chambers. The first chamber is a usable material chamber  46  which will hold usable material, in this case an effervescent beverage, soda  50 . The second chamber is a displacement matter chamber  48  which will hold displacement matter, non-compressible matter, water  52 . 
     The usable material chamber  46  is accessed by the usable material passageway  16 , which is used to put soda  50  into and to take soda  50  out of the usable material chamber  46 . The volume of space contained in the usable material passageway  16 , is part of the space defined by the usable material chamber  46 . 
     Device Description of Soda Saver  1 . 5   
     The Soda Saver  1 . 5  is easier to fill at the bottling plant because it is concentric. Soda pours out the usable material passageway  16  and about the closed displacement matter cap  66 . The sequence of opening the caps is controlled by the usable material cap  60  fitting over the displacement matter cap  66 , making the displacement matter cap impossible to remove first or replace last. 
     Operation of Soda Saver  1 . 
     Operation of the concentric soda saver is identical to the operation of the cap controlled soda saver  1 . 1 . The cap operation order is firmly controlled by the fact that the usable material cap  60  fits over the displacement matter cap  66 . 
     Variation of Soda Saver  1 . 
     The use of the chambers for displacement matter or usable material may be reversed as before. Valves may be utilized instead of caps. 
     Air Sensitive Chemicals, Storage and Dispensation. A paint dispensing device that also emits no vapors. Paint Dispenser  2 . 
     Component Description, Paint Dispenser  2 . 
     FIG. 2A shows a perspective view of a volumetric displacement device, chemical dispensing device, air tight chemical dispenser, paint dispenser  2 , constructed as an embodiment of the volumetric displacement device, that protects its contents from being exposed to atmospheric air. FIG. 2B shows a cutaway view of the device shown in FIG.  2 A. FIG. 2C shows the device shown in FIG. 2A with a cup attached that fills with paint, that is suitable for dipping a brush in. Referring to all of FIG. 2A, FIG.  2 B and FIG. 2C, except where noted, a paint dispenser  2  is constructed. 
     A paint can, container  12 , of one piece, is formed from a non-stretching material, metal. The container  12  is similar in construction in both size and material to a conventional metal chemical container except that it has two necks. Construction of the container  12  and its various parts is done in similar fashion to the soda saver  1  already described and depicted in FIG.  1 A and FIG.  1 B. 
     A displacement partition  28  and its various parts is constructed in similar fashion to the displacement partition  28  of the soda saver  1  already described and depicted in FIG.  1 B. 
     A displacement partition clamp  34  and its various parts is constructed in similar fashion to the displacement partition  28  of the soda saver  1  already described and depicted in FIG.  1 B. The actual shape of the displacement partition clamp  34  is as depicted in FIG.  2 B. 
     An access lid  72  of one piece is formed of metal. 
     A set of access lid female threads  74  are formed from the metal of, and as part of, the access lid  72 . The threads are formed in such a manner that they mate securely with the displacement matter neck male threads  24 . 
     The access lid  72  is fitted with an access lid seal  76 , which is a thin disk of silicon rubber. The access lid seal  76  serves to tightly seal the displacement matter passageway  44  when the access lid  72  is securely screwed onto the displacement matter neck  20 , as the access lid female threads  74  firmly engage the displacement matter neck male threads  24 . 
     The metal for the access lid  72  forms the access lid passageway  78  within the access lid  72 . 
     A set of access lid clamp female threads  80  are formed within the access lid passageway  78  from the metal of, and as part of, the access lid  72 . The threads are formed in such a manner that they mate securely with the displacement partition clamp male threads  40 . 
     An access lid lip  82  is formed from the metal of, and as part of, the access lid  72 , at the bottom of the access lid passageway  78 . 
     The displacement partition neck  29  is inserted into the access lid passageway  78  and the displacement partition flange  32  comes to rest on the access lid lip  82 , as shown. 
     The displacement partition clamp  34  is securely screwed onto the access lid passageway  78 , as the displacement partition clamp male threads  40  firmly engage the access lid clamp female threads  80 . 
     In so doing, the displacement partition flange  32  is securely clamped between the displacement partition clamp  34  and the access lid lip  82 . The joint is permanently sealed with the silicon cement, displacement partition flange adhesive  42 , which is applied to both sides of the displacement partition flange  32 , and contacts both the access lid lip  82 , and the displacement partition clamp  34 , creating a secure, air tight junction. 
     A spout  94  of one piece is formed of metal. 
     The metal for the spout  94  forms the spout passageway  96  within the spout  94 . 
     A set of spout female threads  98  are formed within the spout passageway  96  from the metal of, and as part of, the spout  94 . The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     A spout lip  100  is formed from the metal of, and as part of, the spout  94 , at the top of the spout female threads  98 . 
     The spout  94  is fitted with a spout seal  102 , which is a thin disk of silicon rubber. The spout seal  102  serves to tightly seal the spout passageway  96  when the spout  94  is securely screwed onto the usable material neck  14 , as the spout female threads  98  firmly engage the usable material neck male threads  18 . 
     A set of spout male threads  106  are formed from the metal of, and as part of, the spout  94 . 
     The delivery end of the spout  94  has a conventional valve  104  installed in it. 
     A displacement tube  84  of one piece is formed of metal. 
     The metal for the displacement tube  84  forms the displacement tube passageway  86  within the displacement tube  84 . 
     A set of displacement tube male threads  90  are formed from the metal of, and as a part of, the displacement tube  84 . The threads are formed in such a manner that they mate securely with the displacement partition clamp female threads  38 . 
     The displacement tube  84  is fitted with a displacement tube seal  88 , which is a thin disk of silicon rubber. The displacement tube seal  88  serves to tightly seal the junction when the displacement tube  84  is securely screwed into the displacement partition clamp  34 , as the displacement tube male threads  90  firmly engage the displacement partition clamp female threads  38 . 
     A set of displacement tube male cap male threads  92  are formed from the metal of, and as part of, the displacement tube  84 . 
     A usable material cap  60 , a usable material cap seal  64 , a displacement matte cap  66 , a displacement matter cap seal  68 , and their various parts are constructed in similar fashion to the corresponding parts of the soda saver  1  already described and depicted in FIG.  1 B. The caps are similar in construction in both size and material to a conventional metal can cap. 
     The usable material cap  60  is constructed so that it will screw securely onto the spout male threads  106 . 
     The displacement matter cap  66  is designed so that it will screw securely onto the displacement tube cap male threads  96 . 
     A paint brush cup  110  of one piece is formed of metal. 
     The metal for the paint brush cup  110  forms the cup passageway  112  within the paint brush cup  110 . 
     A set of cup female threads  114  are formed within the cup passageway  112  from the metal of, and as part of, the paint brush cup  110 . The threads are formed in such a manner that they mate securely with the displacement partition clamp female threads  38 . 
     The paint brush cup  110  is fitted with a cup seal  116 , which is a thin disk of silicon rubber. The cup seal  116  serves to tightly seal the junction when the paint brush cup  110  is securely screwed into the usable material neck  14 , as the cup female threads  114  firmly engage the usable material neck male threads  18 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement partition passageway  30 , and the displacement partition clamp passageway  36 , and the displacement tube passageway  86 . 
     The spout passageway  96  is defined to be a part of the usable material passageway  16 . 
     Assembly Description. 
     The displacement partition  28  divides, the container  12  into two chambers. The first chamber is a usable material chamber  46  which will hold usable material, in this case an air sensitive chemical, toxic volatile liquid, paint  50 . The second chamber is a displacement matter chamber  48  which will hold displacement matter. non-compressible matter, water  52 . 
     chambers, passageways, caps, and container  12  have been constructed which are analogous to their corresponding structures in the soda saver  1 . The container  12 , and the paint dispenser  2 , also work best with a fixed maximum internal volume as describe for the soda saver  1 . 
     FIG. 2B also shows 0.25 liters water  118  that has been measured by a conventional measuring device. 
     Device Description of Paint Dispenser  2 . 
     A paint dispenser  2  of fixed internal volume has been achieved which has two separate chambers. With the paint dispenser  2  maintained in the full fill state, the sum of the volumes of the chambers will remain roughly constant. In the full fill state the admission of water  52  into the displacement matter chamber  48 , will force an equivalent amount of paint  50  from the usable material chamber  46 . Since the chambers are tightly sealed from each other, there can be no transfer of matter or material between chambers. In proper operation, no atmosphere can enter the container though the conventional valve  104 . The usable material chamber  46  is therefore isolated from the environment and therefore, contamination of the paint  50  by the atmosphere is greatly reduced or eliminated, depending on the efficiency of the valve and its usage. 
     The displacement tube  84  provides a means to introduce non-compressible matter to the displacement matter chamber  48  under pressure. This pressure will transfer through the mobile displacement partition  38 , to the paint  50  stored in the usable material chamber  46 . If the usable material cap  64  is removed and the conventional valve  104  is opened, the displacement partition  28  will move as paint  50  is driven from the paint dispenser  2 , as the paint  50  goes through and out the attached spout  94 . During this dispensing operation, the unused portion of the paint remains isolated from, and not contaminated by, the environment. 
     The addition of a quantity of 0.25 liters water  118 , will cause the dispensation of an equal amount of paint  50 , that is, 0.25 liters. Alternatively, with the spout  94  removed, and the paint brush cup  110  screwed securely on, paint exiting the usable material chamber will be forced into the paint brush cup  110  via the cup passageway  112 . Exercising the latter option, water  50  removed from the gravity tube will allow the paint  50  to flow back into the container from the paint brush cup  110 , creating a non messy way to remove and replace paint  50  from the paint dispenser  2 . 
     Ramifications of Paint Dispenser  2 . 
     The paint dispenser  2  provides means to prevent the stored paint from being exposed to air. This exposure is prevented both during dispensation, and for extended periods of storage. This technology greatly improves the storage life for the unused portion of the paint, once the contents have been partially used. The unused portion is prevented from curing prematurely, hardening, drying out, off gassing, absorbing atmospheric water or air, and skinning over. The paint is not exposed to oxygen, air pollutants, or atmospheric moisture. 
     The paint dispenser  2  provides for an easy, relatively mess free means of dispensation. A messy lid does not have to be removed for each dispensation of paint as a conventional can requires. Neither does the paint fill the lid attachment grove and run down the side of the can when the paint is poured out, as a conventional can does. The paint can also be delivered directly to an external chamber, paint brush cup  110  where paint brushes can dip into the paint and the unused paint can be caused to return to the paint dispenser  2  from the paint brush cup  110 . Another benefit of the paint dispenser  2  is that metered output can be achieved, by metering the water  50  poured into the displacement tube  84 . 
     The device shown in FIG.  2 A and FIG. 2B can readily be used as a vapor free vessel and dispenser for volatile liquids. Removing the displacement tube  84  and the displacement matter cap  66 , leaves a vapor-less volatile liquid dispenser, that when tipped up, will pour its contents out the spout. Air will fill the displacement partition  28 . There will be no contact of the usable material in the container  12  with the atmosphere and the usable material will not evaporate to the atmosphere. Modifications of the size and shape of the container  12  make vessels that look like existing vessels, and are suitable, for the storage of gasoline, liquid chemicals, pesticides, flammable liquids, solvents, petroleum derivatives and other liquids with undesirable vapors. These vessels will be internally vapor free, and will be less prone to burning by fire or explosion. They will pollute the environment less, and will produce less vapors for humans to breath in confined areas. There will be less loss of usable material to evaporation. 
     It can be expected that the material correctly stored in the displacement matter chamber  48  will slosh and froth up less. The container will have increased stability being in the full fill state in most conventional applications. Containers with this technology will not necessarily need air vents that have to be opened before material can be removed from the container. The displacement matter chamber serves that function. Usable material in the usable material chamber  46  can be chilled with ice placed in the displacement matter chamber  48  without the ice contaminating the usable material. 
     Variation of Paint Dispenser  2 . 
     Many chemicals are atmosphere sensitive. Fine wines, glues, varnish, shellac, brake fluid, coatings, casting materials, pharmaceutical preparations, are just some. Dispensing of many fine chemicals, in ultra pure environments is now possible with the volumetric displacement device. A large variety of liquid materials have shelf lives that are reduced once the container is opened. These materials in general would be protected and would benefit from having the same shelf life in an opened container, as they did in the unopened container. 
     In all, their would be less fire risk, less loss of material though evaporation, less environmental damage, and less toxic exposure to humans from volatile liquids, flammable solvents, organic liquids, toxic chemicals, pesticides, petroleum derivatives, gasoline, acetone, ketones, naphtha, toluene, ethylene, methanol, ethanol, ether, lacquer thinner, alcohol, kerosine and many more materials. 
     The ability of the device to deliver liquids in a neat manner could be applied to many products. Liquid soaps, detergents, cleaners, oils both cooking and machinery, and industrial chemicals are just some of the examples of material that often is associated with a messy container. Gravity driven water will serve as a pump for many materials. 
     In general, containers of most shapes and sizes could be fit with volumetric displacement devices. Containers are generally made from metal, ceramic, glass, and plastic. Any of these materials would be useful in making the device described. Shapes of containers that now exist can be emulated, or new shapes derived. 
     A common gas can, fuel transporter, gasoline container suitable for transporting gasoline, or any other volatile material container, is an ideal application for the volumetric displacement device. Installed in a gasoline container, the device provides a container that contains no gasoline fumes. This is a safer container in that it is less flammable and in that it emits less harmful to human gasoline vapors. Used on boats, in automobiles, farm vehicles and for general transport of fuel, it provides a safer container. Filled with air, the displacement chamber will inhibit sloshing, provide vapor protection, and reduce evaporative loses. Filled with water, the displacement partition provides the same benefits and completely prevents sloshing as well. 
     Installed in large storage tanks, in transport tankers, mounted on trucks, in aircraft, on boats, in refueling equipment, and virtually any other fuel or volatile liquid storage device, this device provides safety, health, conservation and environmental benefits. 
     Many materials have offensive odors. The device would be suitable for reducing odors emanating from containers. Typically when the consumer opens a container, the air in the container escapes. That air has been collecting vapors that are unpleasant to smell. When the consumer tips up the bottle and pours out the material, out comes a bunch of bad smelling air. With the volumetric displacement devices installed, there is no container air to emit. This is suitable for chlorine bleaches, ammonia, vinegar, epoxy glues, sewage and septic tanks, sewage trucks, fertilizers, and other foul smelling chemicals. 
     Water or refuse disposal systems, septic tanks, sewage systems, water treatment holding ponds, toilet and septic holding tanks on vehicles, aircraft, boats, and recreational vehicles and portable toilets would have less smell if kept free of air with a volumetric displacement device. They would slosh less as well. Such holding tanks would operate a little differently as they do not deliver usable material but accept usable material. (Although in this utilization the waste might be described as “unusable material”, by definition in this application it is still referred to as “usable material”. See term section.) In action the waste disposal volumetric displacement device would expel displacement matter as it is filled with waste. 
     A variation to the paint dispenser  2  is the addition of a spigot and valve combination, tap and valve combination, cock, conventional petcock installed in the container wall of the usable material chamber. Most convenient, although not mandatory, would be to install the conventional petcock near the bottom of the sidewall of the container  12 . This would allow most of the usable material in the usable material chamber  46  to drain without tipping the paint device  2 . Material could flow from the conventional petcock when it was opened, with displacement matter flowing into the displacement matter chamber  48 . Usable material can flow out propelled by the force of gravity while material in the container remains isolated from the environment. 
     The addition of the conventional petcock allows for the elimination of the usable material neck and passageway. Usable material could be loaded at the factory through the conventional petcock, or through the displacement matter neck passageway before the displacement partition clamp and the displacement partition are installed, or through the access passageway. 
     Another achievement with this device is the elimination of the need to vent the container for emptying it, or to open and close that vent, as is now done on a conventional container. Many containers have vents to allow air to enter the container as it is being emptied. Often, the vents are capped to prevent evaporation or contamination of the usable material in the container. Usable material is either poured out the container opening, as in a gas can, or out a tube or petcock, cock at the bottom of the container, as in a large coffee dispenser. With the displacement matter chamber installed, the container needs no other vent. 
     This means that a container can be poured from directly or tapped at the bottom without the need to open a vent. Although the container has an opening for the displacement matter, this opening need not be shut to prevent evaporation or contamination of the usable material. In many applications, the cap to the displacement matter chamber may be left off with no ill effects, and results in an easier to use container and overall labor savings. 
     A variation of the paint dispenser  2  is to fit a plug type cap directly to the displacmenet partition clamp  34 , so that the displacement tub  84  can be stored separately to save space. Use of the displacement matter cap  66  at the top of the displacement tube  84  is optional. Alternatively, modification of the junction of the displacement tube  84  and the displacement partition clamp  34 , would allow the displacement matter cap  66  to fit both on the top of the displacement tube  84 , and on the displacement partition clamp  34 , so that only one cap need be made, to be used as the consumer chooses. 
     The external chamber could be shaped as a pan, to use as a paint roller filler. Screens might be employed at various points such as at the spout  50 , or in the cup passageway  112 . These would provide the user lump free, screened paint. 
     Simplified Paint Device Variation, Simplified Paint Dispenser  2   d.    
     Component Description of Simplified Paint Dispenser  2   d.    
     FIG. 2D shows a cutaway view of a volumetric displacement device, modified paint dispenser, simplified paint dispenser  2   d,  constructed as an embodiment of the volumetric displacement device, that accomplishes similar objectives as paint dispenser  2 , with simpler apparatus. Referring to FIG. 2D except where noted, a simplified paint dispenser  2   d  is constructed. 
     A paint container, container  12 , of one piece, is formed from a non-stretching material, plastic. The container  12  is similar in construction in both size and material to a conventional plastic household bleach or automotive antifreeze container except that it has two extended necks. Construction of the simplified paint dispenser  2   d  and its various parts is done in similar fashion to the soda saver  1  already described and depicted in FIG.  1 A and FIG. 1B except as noted. The container  12  with integral spout  94  and displacement tube  84  is formed as one piece. Caps are constructed in analogous fashion. 
     A displacement partition  28  and its various parts are constructed in similar fashion to the displacement partition  28  of the soda saver  1  already described and depicted in FIG. 1B, except that it has no displacement partition flange  32 . 
     The displacement partition neck  29  is bonded with adhesive  42  directly to the inner wall of the displacement matter neck  20 , within the displacement matter neck passageway  22 , eliminating the need for a displacement partition clamp  34 . 
     With a displacement tube  84  that stands considerably higher than the spout  94 , the simplified paint dispenser  2   d  works similarly to the paint dispenser  2  except that there is no access lid  72  or conventional valve  104  to operate. 
     Device Description of Simplified Paint Dispenser  2   d.    
     Without a conventional valve installed in the usable material passageway  16 , the simplified paint dispenser  2   d  shown does not completely seal the paint  50  from the environment. However, as long as the usable material fill level  56  is kept in the narrow part of the usable material neck  14 , the surface area of the material exposed to the environment is greatly reduced, providing greatly improved isolation of the paint  50  from the environment over existing conventional storage devices. 
     As the diameter of the usable material passageway  16  becomes smaller, the ability of the simplified paint dispenser  2   d  to isolate the paint  50  from the environment becomes greater and greater. 
     Ramification and Variation of Simplified Paint Dispenser  2   d.    
     A flexible spout  94  would provide easier operation in some circumstances. A flexible spout  94  could be achieved with corrugation in the spout  94  material. Manufacturing the usable material neck  14  to the appropriate angle eliminates the need for a flexible spout  94 . A flexible displacement matter neck  20  or displacement tube  84  would add convenience. 
     A petcock, as describe in the paint dispenser  2 , could be fit to the simplified paint dispenser  2   d  for more convenient utilization. The usable material neck, passageway and cap can be eliminated. The manufacturer would fill the container through the petcock or through the displacement matter neck passageway before the displacement partition is installed. 
     Paint Dispenser Pump  2   e  Device Variation. 
     Component Description of Paint Dispenser Pump  2   e.    
     FIG. 2E shows a cutaway view of a volumetric displacement device, modified simplified paint dispenser, paint dispenser pump  2   e , constructed as an embodiment of the volumetric displacement device, that can readily be used as a simple pump. Referring to FIG. 2E except where noted, paint dispenser pump  2   e  is constructed. 
     Construction of the paint dispenser pump  2   e  and its various parts is done in similar fashion to the simplified paint dispenser  2   d  already described and depicted in FIG. 2D except as noted. 
     Instead of a displacement matter cap  66 , as depicted in FIG. 2D the displacement matter neck  20  is fitted with a conventional water tap fitting  66   e , which may be connected to a central water supply, conventional pressurized tap water system  67  such as those found in a typical residential, industrial or business building. 
     Instead of a usable material cap  60 , as depicted in FIG. 2D the usable material neck  14  is fitted with a conventional faucet  60   e , such as those found in a typical residential, industrial or business building. 
     The paint device pump  2   e  can be used in other environments. It would work under water, in space, or in baths of other materials. In each case, there would be no contact of the usable material in the container with the environment. Chambers attached to the pump at the faucet or other installed valve could be filled with usable material that is uncontaminated. 
     Device Description of Paint Dispenser Pump  2   e.    
     The paint dispenser pump  2   e  is connected to the conventional pressurized tap water system  67 . When the conventional faucet  60   e , attached to the paint dispenser pump  2   e  is opened, usable material contained within the paint dispenser pump  2   e  will be dispensed. In use, it will seem to the user, that they can draw liquids contained in containers, in the same fashion that they can draw water from an ordinary water faucet. 
     Ramifications of Paint Dispenser Pump  2   e.    
     The paint dispenser pump  2   e  and its variations, provides most of the benefits associated with the of the paint dispenser  2 . In particular, it provides for vapor free storage of volatile liquids and it prevents the environment, atmosphere, air from contaminating the partially consumed paint  50  stored in the paint dispenser pump  2   e.    
     The paint dispenser pump  2   e  allows usable material to be delivered under pressure. The conventional faucet  60   e  permits the flow of usable material to be controlled. An easy inexpensive means has been created to pump multiple types of liquids without contaminating them, without the need for different types of pumps, and without the need to dirty a pump. In effect, the conventional pressurized tap water system  67  serves as a central power source that allows the pump dispenser pump  2   e  to serve as an inexpensive pump. 
     Using multiple paint dispenser pumps  2   e , an entire array of pumped liquids can inexpensively be set up in agricultural, industrial and residential settings, all powered by the conventional pressurized tap water system  67 . 
     The use of a displacement partition clamp, as was done with the soda saver  1  and depicted in FIG  1 B, would make a more secure displacement partition attachment and would allow for higher pumping pressures. 
     Operation Paint Dispenser  2 . 
     The container  12  is filled with paint  50  by the paint manufacturer, paint packaging company in the following manner. The displacement tube  84  is removed from the access lid  72 . The spout  50  is removed from the container  12 . With the displacement matter passageway  44  clear, air will be expelled from the displacement matter chamber  48  via the displacement matter passageway  44  as paint  50  is poured into the usable material passageway  16  by the paint packing company. When the container  12  is at an appropriate fullness, the displacement tube  84 , the displacement matter cap  66 , the spout  50 , and the usable material cap  60 , are screwed onto there respective mounting locations to seal the paint dispenser  2  for delivery to the consumer. 
     Alternatively, the access lid  72  and attached assemblies may be removed from the container  12 . An appropriate amount of usable material, paint  50  is poured into the container  12  until it is approximately filled. The spout  50  and the usable material cap  60  are attached to the paint dispenser  2  in their conventional mounting locations. The displacement partition  28  is collapsed and devoid of most air. The displacement tube  84  is removed from the access lid  72 . With the displacement matter passageway  44  now open, the access lid  72 , with attached displacement partition  28  is screwed back onto the container  12 , as the displacement partition is inserted into the container. Any residual air in the displacement partition  28  will be expelled. The displacement tube  84  and displacement matter cap  66  are screwed to their appropriate attachment points to tightly seal the paint dispenser  2 . 
     In use, the consumer has several options. Removing the usable material cap  60  initiates the process by which paint  50  is dispensed from the paint dispenser  2 . With the spout  50  attached, the usable material cap  60  off, the displacement tube  84  attached, and the displacement cap  66  off, water  52  poured into the displacement tube  84  will go into the displacement partition  28 , and paint  50  will be dispensed from the spout  50 . If the consumer pours 0.25 liters water  52  into the displacement tube, a like quantity of paint  50 . 0.25 liters will be dispensed from the paint dispenser  2 , when the conventional valve  104  is opened. If the consumer detaches the spout  94  and attaches the paint brush cup  110 , the paint  50  will be forced into the paint brush cup  110  as water  52  is added to the displacement matter chamber  48 . Removing the water  52  from the displacement tube  84  will allow unused paint  50  to flow back into the paint dispenser  2 . 
     The consumer has the option of not using the water  52  in the displacement matter chamber  48 . By tipping the paint dispenser  2  enough to prevent air from entering the conventional valve  104 , or even turning it upside down, opening the displacement matter cap  66  and the usable material cap  60 , and the conventional valve will allow paint  50  to pour out the spout  50 . Air will enter the displacement partition  28 , and serves as the displacement matter. Again, a non-messy, non contaminating means has been achieved for dispensing paint  50 . If the matter is a volatile liquid, no vapor will be emitted from the container  12 . In this use, the consumer may dispense with the displacement tube  84  and displacement matter cap  66  completely, not using them at all. 
     The user has the option of opening the access lid  72  for other purposes such as stirring or adding colorant, pigment to the paint  50 . If the displacement matter chamber  48  is too full of water to allow its passage through the displacement matter neck passageway  22 , the user will first pour or pump some of the water out of the displacement matter chamber  48 . 
     Simplified Paint Device Variation. Reversed Simplified Paint Dispenser Pump  2   e , with Usable Material and Displacement Matter Chambers Reversed. 
     Description of Reversed Simplified Paint Dispenser Pump  2   e.    
     FIG. 2F shows a cutaway view of a volumetric displacement device, modified paint dispenser, reversed simplified paint dispenser pump  2   e , constructed as an embodiment of the volumetric displacement device. 
     The construction of the Reversed Simplified Paint Pump  2   e , is similar to the the simplified paint dispenser pump  2   e  depicted in FIG  2 D. In fact it is identical except that displacement partition  28  is bonded to the inside of the usable material neck  14 . Other than this modification, it is the same device as depicted in FIG.  2 E. 
     By operating the Reversed Simplified Paint Pump  2   e  in exactly the same fashion as the Simplified Paint Pump  2   e  of FIG. 2E, the paint ends up inside the displacement partition bladder instead of outside it, and the displacement matter water ends up outside the bladder and within the container. 
     Material Management: Immediate and Complete Delivery, Application Ease, and Upward Delivery. An Improved Toothpaste Tube  3 . 
     Component description of Improved Toothpaste Tube  3 . 
     FIG. 3A shows a perspective view of a volumetric displacement device, volumetric dispensing and preservation device, improved squeeze tube, improved squeeze bottle, improved toothpaste device  3 , constructed as an embodiment of the volumetric displacement device, that delivers contents as if the squeeze tube were always full. FIG. 3B shows a cutaway view of the device shown in FIG.  3 A. FIG. 3C shows a perspective view of a more convenient improved toothpaste device  3   c , constructed as an embodiment of the volumetric displacement device, that delivers contents as if the tuber were always full. FIG. 3D shows a cutaway view of the device shown in FIG.  3 C. Referring to all of FIGS. 3A,  3 B,  3 C, and  3 D an improved toothpaste device  3  and a more convenient improved toothpaste device  3   c  are constructed. 
     Generally, the device is constructed in similar fashion to the soda saver  1  depicted in FIGS. 1A and 1B. Parts shown are similar in construction to the parts described for the soda saver  1  except as noted. 
     A container  12  is constructed of a flexible material. Toothpaste  50  is the usable material. Referring to the device depicted in FIGS. 1A and 1B, the container  12  is sealed at the bottom in conventional fashion creating a tube bottom seal  72 . A conventional syringe  74  is employed to inject water  52  under force into the displacement matter chamber  48 . 
     Device Description of Improved Toothpaste Tube  3 . 
     As conventional toothpaste tubes are emptied, they be more and more unmanageable. They are hard to squeeze material out of and they look wrinkled. The constructed improved toothpaste tube  3  in operation and feel, will always seem full, and if correctly used will squeeze out toothpaste in an easy manner, over the entire life of the product. This effect is achieved by filling the displacement matter chamber  48  of the toothpaste device with enough water  52  to fill the container  12  again, bring it to the full fill state. One of the benefits of a full squeeze tube is that it delivers usable material easily when squeezed. The improved toothpaste tube  3  can easily be kept full. The displacement partition  28 , in similar fashion to devices already described, prevents the water  52  from contaminating the toothpaste  50 . 
     Ramifications of Improved Toothpaste Tube  3 . 
     The improved toothpaste device  3  again has the ability to isolate it&#39;s contents from the environment. Squeeze bottles and stiff tubes that return to position, can have contents that gain all the benefits previously described for material that is isolated. The usable material will enjoy an extended life, and the environment will have reduced exposure to the contents. These squeeze tubes and bottles will work in other environments, baths, and space as previously described for the paint dispenser  2 . 
     Material stored in sealed squeeze bottle and tubes in the full fill state, with non-compressible displacement matter will not off gas, in the same manner that has been described for the soda saver  1 , as it prevents off gassing of effervescent beverages. 
     The improved toothpaste tube  3  will make it far easier to dispense other types of usable material when the tube is partially empty. When the usable material is almost gone, the device will deliver usable material as easily as when the tube was full. Delicate application will be easier. Material can be dispensed from volumetric displacement squeeze tubes and bottles in an upward direction. The user will always think the container is full and will experience the psychological position of using a full squeeze container rather than wrestling with a half empty one. The user will not have to shake the material in a squeeze bottle to the nozzle end of the bottle before use. The volumetric displacement squeeze tube and bottle in a full fill state will deliver material immediately at first squeeze, without having to shake, role up, or manhandle the container. 
     Some material is distributed in fairly stiff tubes available on the market, where you squeeze the material out and as a tube returns to its shape, air is sucked into the tube. In some applications, they can be very difficult and time consuming to deal with. The last bit in the tube seems near impossible to remove. But not so difficult with volumetric displacement technology which can make difficult materials easier to apply. 
     Variation of Improved Toothpaste Tube  3 . 
     Squeeze bottles, functionally equivalent to squeeze tubes, in similar fashion, could also employ this technology. Many materials are shipped in plastic or metal containers that turn upside down and squeeze to dispense material. With volumetric displacement technology, no longer would you have to take the mustard bottle or the glue bottle and shake it upside down until the material got to the opening. Volumetric displacement would make the bottle seem full on use, and the first squeeze would immediately see material come from the container. These squeeze bottle would also be able to dispense material in an upward direction in much easier fashion than a conventional squeeze bottle. 
     A full squeeze bottle is often more stable then a partially emptied one and has a different feel to it when picked up. The devices as described often will be less easily tipped, and will have a full weight to them. 
     A more convenient improved toothpaste tube  3   c  can be made by putting the displacement matter neck  20  and the usable material neck  14  at opposite ends of the tube, and is depicted in FIGS. 3C and 3D. With this arrangement, the necks and caps don&#39;t interfere with each other, especially on smaller tubes. The displacement partition can be more easily designed to prevent interference with a usable material opening. Such interference could cause the opening to become blocked. By making the displacement partition just shot enough, or with a shape such that it can&#39;t interfere, blockage is prevented. This arrangement also will make the tube easier to squeeze at the end of its product life. 
     Most liquid material could be put into a squeezed bottle of one sort or another. Thick liquid foods, ketchup, mustard, soaps, cosmetics, suntan lotion, body lotions, shampoo, car wax are on an endless list of possible candidates. The improved toothpaste tube can be utilized with the usable material placed in what is presented as the displacement matter chamber and with the displacement matter in what is presented as the usable material chamber. As such, the device will work as described. 
     Operation of Improved Toothpaste Tube  3 . 
     The improved toothpaste tube  3  is filled in similar fashion to the devices already describe. With both caps off, the toothpaste packaging company would force toothpaste  50  into the usable material chamber  46  via the usable material passageway  16 . With the displacement matter chamber  48  collapsed and devoid of air, and the usable material chamber  46  full, both caps are secured on the improved toothpaste tube  3  and it is shipped to the consumer. 
     Generally, in use, the consumer operates the improved toothpaste tube  3  in similar fashion to any other squeeze tube. The consumer removes the usable material cap  60  and squeezes out toothpaste  50 . The toothpaste  50  comes out because pressure applied to the non-stretching material of the container  12  can only be relieved by the toothpaste  52  coming out the usable material passageway  16 . After a point, pressure can not be applied easily to the container as it deforms too much. 
     At this time, the consumer ensures that the usable material cap  60  is firmly secured to the container  12 . The consumer then removes the displacement matter cap  66 . The conventional syringe  74  with female threads that match the displacement matter neck threads  24  is filled with water  52  and screwed to the displacement matter neck  20 . Water is injected into the displacement matter chamber  48  via the displacement matter passageway  44 . The improved toothpaste device  3  will fill up. The conventional syringe  74  is detached and the displacement matter cap  66  reinstalled securely. With the usable material cap  60  removed again, finger squeeze pressure on the container  12  will translate directly into toothpaste  50  coming from the usable material passgeway  16 . In short, with the improved toothpaste device  3 , the user&#39;s squeeze does not compress the flexible container  12 , but rather the installed and full non-compressible displacement matter chamber  48  fills the container  12  and causes the “squeeze” to directly force toothpaste  50  out of the usable material passageway  16 . 
     Storage or Granular Solids. A dry Cereal, Cracker, Chip, Cereal Saver  4 . 
     Component Description of Cereal Saver  4 . 
     FIG. 4A shows a perspective view of a volumetric displacement device, cereal saver  4  constructed as an embodiment of the volumetric displacement device, whose contents are partially protected from atmospheric water vapor, which would otherwise tend to make the contents get soggy over a period of time. FIG. 4B shows a cutaway view of the device shown in FIG.  4 A. Referring to FIGS. 4A and 4B except as noted, the cereal saver  4  is constructed. 
     A container  12  of one piece, is formed of non-stretching plastic. The container  12  is similar in construction to a conventional plastic storage container. A usable material neck  14  is formed as part of the container so that the plastic forms a usable material passageway  16 . The usable material neck  14  has a set of usable material neck male threads  18 . 
     A usable material cap  60  is formed from plastic, with attached usable material cap female threads  62 , which mate with usable material neck male threads  18 . The usable material cap is fitted with a usable material cap seal  64 , which is a thin disk of silicon rubber which serves to tightly seal the container when the usable material cap  60  is screwed securely onto the usable material neck male threads  18 . The plastic of the usable material cap  60  forms a displacement partition passageway  30 . The plastic of the usable material cap  60  forms a vent  74 . 
     A displacement membrane, displacement partition  28 , is constructed of an elastic, rubber like material. The displacement partition  28  is constructed as an air tight bag, in a shape that is roughly the same size and shape as the interior of the container  11 . The material of the displacement partition  28 , forms a displacement partition neck  29 , and a displacement matter passageway  44 . 
     A displacement matter neck  20  is formed from flexible plastic. The plastic of the displacement matter neck  20  forms a displacement matter neck passageway  22 . A grommet  34  is constructed of a rubber like material. The grommet  34  is designed to fit inside the displacement partition passageway  22 . The material of the grommet  34  forms a grommet passageway  36 . The diameter of the grommet passageway  36  is such that it will tightly fit the displacement partition neck  29  with the displacement matter neck  20  inserted into displacement partition passageway  30 . The displacement partition neck  29  is inserted into the grommet passage way  36 , and the displacement matter neck  20  is inserted into the displacement partition passagewy  30  as shown. The junctions of the grommet passageway  36 , the displacement partition neck  29 , and the displacement matter neck  20  are sealed with displacement partition adhesive  42 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement matter neck passageway  22 , and the displacement partition passageway  30 . 
     With the addition of the displacement partition  28 , the container  11  is divided into two regions. A usable material chamber  46  is created which will hold usable material, in this case a dry cereal  50 . Also created is a displacement matter chamber  48  which sill hold the displacement matter  52 , which in this case is air  52 . FIG. 1B depicts the displacement partition  28  that is expanded to fill the void above the dry cereal  50 . 
     A conventional clamp  66  is employed to squeeze shut the displacement matter neck  20 . 
     Device Description of Cereal Saver  4 . 
     The Devise, as shown in FIGS. 4A and 4B, inhibits a portion of dried cereal  50  from absorbing atmospheric water. Atmospheric air that might contain moisture is displaced from the region of the container  12  above the cry cereal  50 , by the displacement partition filled with air, in this case, blown in by a human. The atmospheric air was expelled via the vent  74  when the displacement partition was inflated. The elastic displacement partition, upon inflation, conforms to the interior shape and size of the container  12  sections that are not being used for storage, the top surface of the dry cereal, and it also seals the vent  74 . This minimizes the amount of moist atmospheric air in the container  12 , reduces the amount of moisture available to be absorbed by the dry cereal, and it prevents the dried cereal from becoming soggy over time. 
     Ramifications of Cereal Saver  4 . 
     The cereal saver  4  will reduce the exposure of many organic materials to water vapor in the atmosphere that would otherwise make the dry cereal or other usable material become soggy. In larger applications such as storage silo&#39;s, the same technology will reduce dusty environments. By displacing the air above powders, grains, and other dusty material, there is no air space for the dust to enter. If the material off gasses, there will not be as much space for a large supply of gas to collect. If the dust or gas is a fire hazard, the hazard is reduced. When the large container is opened, less dust or gas is released to the local environment at the time of opening, which in some cases would be a health benefit. This application has use in fire prevention as dusty, combustible air mixtures in closed environments can be reduced. Small containers of powders and powdered chemicals can be protected. 
     Drying agents, water absorbing hygroscpoic materials, could be employed to dry the small amounts of air remaining that surrounds the dry cereal device where the displacement membrane can not go. Various compartments can be envisioned that would contain the hygroscopic material. 
     In the dry cereal embodiment, a satisfactory application could be had with a flexible non-stretching materials as well. 
     The device can also be used to prevent the accumulation of bad smelling air in waste disposal systems, septic tanks, sewage systems, and in fish, chemical, fertilizer and other unpleasant odor producing storage. The device can be used to reduce oxygen in partially filled compost bins and in bins of other material that should be stored with less air. 
     The cereal saver  4  can also be used to prevent freezer burn. Freezer burn is caused by the sublimination of water directly into the air. Without an air space for the water to enter, there will be no freezer burn for material stored in temperatures below 0 degrees Celsius. 
     Operation of Cereal Saver  4 . 
     The conventional clamp  66  is opened allowing the air  52 , to leave the displacement matter chamber  48  as necessary. The usable material cap  60  is removed from the container. Dry cereal  50  or to her dry food stock is placed in or removed from the container  12 . The usable material cap  60  is returned to the container  12 . The displacement matter chamber  48  is inflated with air  52  by a human blowing into the displacement matter neck  20 . Atmospheric air in the container will be expelled out the vent  72 . When the displacement matter chamber  48  is full of air, the conventional clamp  66  is closed to prevent the displacement matter chamber  48  from collapsing. 
     Pressurized Delivery Without Gas Propellants, Oil Dispenser  5 . 
     Component Description of Oil Dispenser  5 . 
     FIG. 5A shows a descriptive view of a pressurized penetrating oil dispenser, oil dispenser  5 , constructed as an embodiment of the volumetric displacement device, which will deliver its contents under pressure without environmentally damaging propellants, and will deliver its contents in any direction including straight up. FIG. 5B shows a cutaway view of the device shown in FIG.  5 A. Referring to FIGS. 5A and 5B, except as noted, the oil dispenser  5  is constructed. 
     A bladder, container  12  of one piece, is formed of elastic nitrile rubber. A container neck  11  is formed from the material of the container  12  as part of the container  12 , so that the rubber forms a container neck passageway  13  within the container neck  11 . 
     A usable material neck  14  is formed form metal. The metal of the usable material neck  14  forms a usable material passageway  16  within the usable material neck  14 . The usable material neck  14  is similar in construction in both size and material to a conventional pipe. 
     A displacement matter neck  20  is formed for metal. The metal of the displacement matter neck  20  forms a displacement matter passageway  22  within the displacement matter neck  20 . The displacement matter neck  20  is similar in construction, in both size and material, to a conventional pipe. A set of displacement matter neck male threads  24  are formed from the metal of, and as part of, the displacement matter neck  20 . A displacement matter neck lip  26  is formed from the metal of as part of, and at the top of, the displacement matter neck  20 . 
     A container stopper  17  is constructed of nitrile rubber in such fashion that it fits snuggly inside the container neck passageway  13 . The material of the container stopper  17  forms a container stopper usable material passageway  15  and a container stopper displacement matter passageway  19  of such that the usable material neck  14  and the displacement matter neck  20  fit snuggly into the respective passageways, which is accomplished using adhesive to complete a tight seal if necessary. 
     A displacement membrane, bladder, displacement partition  28  of one piece is constructed of nitrile rubber. The displacement partition  28  is constructed as an air tight bag in a shape that is roughly the same size and shape as the interior of the container  12 . The parts of the displacement partition  28  are constructed in similar fashion to the displacement partition  28  of the soda saver  1  depicted in FIG. 1B, as is the displament partition clamp  34 . The displacement partition  28 , the displacement matter neck  20 , and the displacement partition clamp  34  are assembled in similar fashion to the soda saver  1 . 
     The container stopper  17  is fit into the container neck passageway  13 , as the displacement partition  28  is inserted into the container  12 . The junction of the container stopper  17  and the container neck  11  is secured with a hose clamp, conventional clamp  72 . 
     A push button to open valve conventional valve  60  is attached to the usable material neck  14  as shown. 
     A nozzle  61  of one piece is formed for metal. The nozzle  61  is similar in construction in both size and material to a piece of pipe. 
     The material for the nozzle  61  forms the nozzle passageway  62  within the nozzle  61 . 
     The nozzle  61  is attached to the conventional valve  60 . 
     A conventional grease fitting  66  is fit to the displacement matter partition clamp as shown. 
     Assembly Description of Oil Dispenser  5 . 
     Passageways and chambers are no established within the oil dispenser  5  in similar fashion to the soda saver  1 . 
     Penetrating oil  50  is the usable material stored in the usable material chamber  46 . Grease  52  is the displacement matter stored in the displacement matter chamber. 
     Device Description of Oil Dispenser  5 . 
     The container  12  of the oil dispenser  5  is made of an elastic material. If the outside container  12  is stretched, it attempts to return to its original shape. This force will serve as a propellant for the usable material, penetrating oil  50 , in that the penetrating oil  50  will be forced out of the container  12  through the usable material passageway  16  when the conventional valve  60  is opened. Without the displacement matter chamber  48 , the internal pressure would decrease as the container  12  contracted, until no more penetrating oil  50  would come out. If, however, grease  52  is forced into the displacement matter chamber  48 , via the conventional grease fitting  66 , the pressure inside the container  12  would again increase and pressurized dispensing would again occur. This dispensing action can be in any direction including in an upward direction. 
     Ramifications of Oil Dispenser  5 . 
     An ideal application for the oil dispenser  5  is for vertical application such as applying penetration oil to the underside of a car, or other material that must be put onto the underside of horizontal surfaces such as pre-installed cabinets and ceilings. Glueing can be done in an upward direction. The container will perform well until it is empty, allowing almost all usable material to be delivered from it. The device is suitable for delicate applications. 
     The device provides the ability to deliver uniform pressure without environmentally damaging gas propellants. Normally, pressurize containers start off with a high pressure which slowly diminishes as the contents of the container are reduced. The injection of more displacement matter into the oil dispenser  5  increases the internal pressure in the device until it is at a satisfactory level. 
     Variation of Oil Dispenser  5 . 
     Pressure from the stretching container could be augmented with hand pressure to overcome for example, the slight resistance of a valve that opens with increased pressure. 
     A wide variety of valve actuating devices can be used. Buttons, levers, squeeze, and wheels are just some. 
     The partition membrane would be eliminated with the application of an immiscible material such as an immiscible calk, instead of the grease. 
     Line drawing dispensers such as pens, cake decorators, slip and glaze dispensers in ceramics, and other art material dispensers can be built. 
     To remove grease for reloading the oil dispenser  5 , extra valves or other means for passageway regulation could be employed to allow grease  52  to be removed from the displacement matter chamber  48 . 
     The displacement partition  28  can be eliminated if an air valve is installed in place of the grease valve. Pumping air into the container would expand it and the same pressure effect would occur to cause automatic dispensing. There would be some disadvantages with this arrangement, however. Turned upside down from the position of FIG. 5B the device will deliver oil, but it would not work right side up. Extending the usable material neck in length until it reached the bottom of the container would allow the device to deliver material when it was right side up, but not when it was a upside down. With the neck having adjustment to change its location, material could be delivered in different positions, however a more complicated device would result. Volumetric displacement matter, in each of these instances, makes the container behave as if it were full, that is stretched, and allows the device to continue to pump oil within the constraints listed. 
     A wide range of usable material can be dispensed with the oil dispenser  5 . Powdered solids such as talk and chalk can be dispensed as well as other finely granulated material. 
     Operation of Oil Dispenser  5 . 
     To put penetrating oil  50  into the oil dispenser  5 , the device must first be opened. The conventional clamp  72  is loosened and the container stopper  17  removed. Penetrating oil  50  is put into the container  12 . The container stopper  17  is put back into the container  12  and the conventional clamp  72  is replaced and tightened to secure the joining of the container  12  and the container stopper  17 . 
     To raise the pressure in the container, grease is pumped into the displacement matter chamber  48  via the conventional grease fitting  66 , until the container  12  is properly inflated. 
     Penetrating oil  50  is released as the actuating means of the usable material conventional valve  60  is actuated. Penetrating oil  50  will be dispensed under pressure in any direction the nozzle  61  of the oil dispenser  5  is pointed. 
     As the pressure of the container  12  lessens, as penetrating oil  50  is removed from the container  12 , more grease  52  is pumped into the displacement matter chamber  48 . The pressure once again increases. 
     When the user wants to reload the entire device, the conventional grease fitting  66  is removed and the grease  52  squeezed out. 
     Storage and Dispensation of Thick Liquids. A Calk Dispenser  6 . 
     Component Description of Calk Dispenser  6 . 
     FIG. 6A shows a perspective view of volumetric displacement device, volumetric dispensing and preservation device, calk dispenser  6  constructed as an embodiment of the volumetric displacement device, whose contents will be protected from atmospheric air for extended periods of time. FIG. 6B shows a cutaway view of the device shown in FIG.  6 A. Referring to FIGS. 6A and 6B, except as noted, the calk dispenser  6  constructed. 
     Generally, the calk dispenser  6  is constructed of materials and in size similar to existing calk tubes. A tube, container  12 , of one piece, is formed from a non-stretching material, plastic. The container  12  is similar in construction in both size and material to a conventional plastic calk tuber container. 
     A usable material neck  14  is formed from the material of the container  12  as part of the container  12  so that the plastic forms a usable passageway  16  within the usable material neck  14 . 
     A mobile rigid partition, plunger, displacement partition  28  of one piece is constructed of plastic. A displacement partition seal  32  is constructed. The displacement partition  28  and the displacement seal  32  are similar in construction in size, material and form to a conventional calk tube plunger. They are constructed in a manner such that the displacement partition seal  32  forms a tight seal with the inside walls of the container  12 . The displacement partition is free to slide the entire length of the container  12 , maintaining a tight seal. 
     A usable material cap  60  of one piece, is formed on non-stretching plastic. The usable material cap  60  is similar in construction in both size and material to a conventional calk tube cap. 
     The displacement partition  28  divides the container  12  into two chambers. The first chamber is a usable material chamber  46  which will hold usable material, in this case calk  50 . The second chamber is a displacement matter chamber  48  which will hold displacement matter, non-compressible matter, grease  52 . 
     A container end  72  of one piece is formed from plastic. A displacement matter passageway  22  is formed from the material of the container end  72 , as part of the container end  72 . 
     A conventional grease fitting  66 , which has a securing nut, passes through the displacement matter passageway  44  of the container end  72 , and is secured with the securing nut. The junction of the conventional grease fitting  66  and the container end  72  is tightly sealed with adhesive  74 . 
     The containing end  72  is constructed so that it can be permanently bonded to the container  12 , with adhesive  74  after the grease  52  and the displacement partition  28  have been installed in the container  12 . 
     Device Description of Calk Dispenser  6 . 
     The advantage of this calk tube is that the grease serves to tightly seal the calk tube. Conventional tubes tend to dry out about the disk that serves as a plunger to force the calk out. The grease  52  of the displacement matter chamber  48  forms an airtight seal between the calk and the outside environment, thereby preserving the calk  50  for extended periods of time. The embodiment has a grease fitting set into the displacement matter chamber  48 . Pumping grease  52  through this one way valve would refill the container, and permit easy, controlled dispensing of the material. 
     Ramifications of Calk Dispenser  6 . 
     A calk device  6  could easily be constructed that would retrofit to existing calk tubes. The container end  72  and conventional grease fitting, as an assembly, could be fastened onto existing calk tubes. Clamps that firmly secure the the container end  72  to the calk tube would allow for greater internal pressure within the calk dispenser  6  as calk is forced from the calk dispesner  6 . The user would put grease  52  into the open end of the calk tube before the container end was attached so that the newly formed displacement matter chamber would not contain compressible air to start the operation. 
     Operation of Calk Dispenser  6 . 
     A conventional grease gun is used to operate the calk dispenser  6 . Grease  52 , forced into the displacement matter chamber  48  of the calk dispenser  6 , will apply pressure to the displacement partition  28 , which will in turn apply pressure to the usable material chamber  46 , which will force the discharge of the calk  50 . Upon completion of the calking job, the usable material cap  60  is replaced. 
     Volatile Liquid, Storage and Dispensation. A Vapor-less Fuel Tank Device. Fuel Device  7 . 
     Component Description of Fuel Device  7 . 
     FIG. 7A shows a perspective view of a volumetric displacement device, fuel device  7  constructed as an embodiment of the volumetric displacement device, which will not have dangerous and toxic vapors. FIG. 7B shows a cutaway view of the device shown in FIG.  7 A. Referring to FIGS. 7A and 7B, except as noted, the fuel device  7  is constructed. 
     Generally, the device is constructed in similar fashion to the soda saver  1  depicted in FIGS. 1A and 1B. Parts shown are similar in construction to the parts described for the soda saver  1  except as noted. 
     Generally, the fuel device is constructed of materials and in size similar to existing fuel tanks. A container  12  is constructed of a rigid material, steel. Gasoline  50  is the usable material. The displacement matter partition  28  is formed from a gasoline proof material such as nitrile rubber, as are the various seals for the usable material cap  60  and displacement partition clamp  34 . A conventional air pump  66  is employed to inject air  52  under force into the displacement matter chamber  28 . A conventional fuel line attachment  72  is employed to deliver gasoline  50  from the fuel device  7  to a gasoline engine. 
     Device Description of Fuel Device  7 . 
     Gasoline  50  is loaded into the fuel device  7  via the usable material passageway  16  in normal fashion. The conventional air pump  66  is fitted with a purge valve that allows the clean air  52  in the displacement matter chamber  48  to escape. Gasoline  50  leaves the tank headed for the gasoline motor via a conventional fuel line in normal fashion. What is different is the presence of a displacement matter chamber  48 . Air  52  pumped into the displacement tank at pressure serves to keep the fuel device  7  full. The cnventional air pump  66  must sense when the pressure is going down and reestablish the proper pressure by pumping more air  52  into the displacement matter chamber  48 . 
     Ramifications of Fuel Device  7 . 
     The most dangerous aspect of the conventional fuel tank is the air fuel vapor mixture in the empty part of the tank. The fuel device eliminates these vapors. This would have special application in racing applications, aviation, marine applications, and perhaps for every fuel powered motor vehicle on the road. 
     Many types of fuel could be protected by the volumetric device. Methanol. Ethanol. Gasoline. Diesel Fuel. Aviation Fuel are examples of such fuels. 
     Many improvements over conventional fuel tanks have been achieved. There is no air in the fuel device  7  that gasoline  50  can evaporate into. There is thus no explosively flammable air fuel mixture in the fuel device  7 . There are less fuel vapors to escape when the fuel device  7  is opened for refilling. This reduces environmental pollution. There is no moisture laden air in the fuel device  7  that can cause water condensate to collect in the fuel device  7 . The gasoline  50  in the fuel device  7  now requires no baffles. The conventional air pump  66  also serves as the fuel pump, as the pressure of the air in the displacement matter chamber  48  will transfer force through the displacement partition  28  to the usable material chamber  46  and fuel will be driven out the fuel line. Fuel can exit the container in any direction as the tank always seems full. Therefore, the fuel line where fuel leaves the tank can be located at any point, even at the top of the tank. 
     Eliminating the air pump, a more passive device can be constructed without an air pump. By letting air flow in under atmospheric pressure as the fuel is pumped out, or allowed to flow out by gravity, the displacement matter chamber  48  would fill with air. If a one way valve where employed in the displacement matter passage way to only allow air in, the valve would necessarily have to open to allow air out when refueling the tank. This simple device could see application on portable tanks as well as on containers for volatile toxic liquids. Containers in all sorts of styles, of types, materials, designs and container sizes both large and small could be fit with volumetric displacement devices. 
     The need to vent the fuel tank is eliminated in a sense, depending on whether the entry of displacement matter into the displacement matter chamber is defined as venting. Other than the intake of displacement matter, the fuel device  7  needs no other venting. 
     Variation of Fuel Device  7 . 
     The fuel device can be utilized with the usable material placed in what is presented as the displacement matter chamber and with the displacement matter in what is presented as the usable material chamber. The conventional air pump  66  must be attached to what is currently the usable material neck  14  and the usable material cap  60  must be attached to what is currently the displacement matter neck  20 . As such, the fuel will be located within the bladder of the displacement partition, and the displacement matter will be located within the container and outside the bladder of the displacement partition. 
     Operation of Fuel Device  7 . 
     In operation, the user will fill the fuel device  7  just as they would any other automotive fuel tank. In operation, the device will maintain a constant internal pressure. As fuel flows out to the gasoline engine, more air will be pumped into the displacement matter chamber. 
     Material Management, Complete Removal of Gas From Cylinder, An Emptying Gas Cylinder  8 . 
     Component Description of Emptying Gas Cylinder  8 . 
     FIG. 8A shows a perspective view of a volumetric displacement device, emptying gas cylinder  8  constructed as an embodiment of the volumetric displacement device, which will dispenser completely, valuable gases. FIG. 8B shows a cutaway view of the device shown in FIG.  8 A. Referring to FIGS. 8A and 8B, except as noted, the emptying gas cylinder  8  is constructed. Referring to all of FIGS. 8A and 8B, a volumetric displacement device is constructed. 
     Generally, the device is constructed in similar fashion to the soda saver  1  depicted in FIGS. 1A and 1B. Parts shown are similar in construction to the part described for the soda saver  1  except as noted. 
     Generally, the gas device is constructed of materials and in size similar to existing gas tanks. A container  12  is constructed of a rigid material, metal. Compressible matter, a gas  50  is the usable material. The displacement material is water  52 . The displacement partition  28  is formed from a flexible or elastic material. Use of an elastic membrane as the displacement partition will allow for the removal of all gas from a cylinder of valuable gas, as the membrane conforms to the inside shape of the tank. A conventional regulator  60  is attached to the usable material neck  14 , employed to regulate gas flow out of the container  12 . 
     Some gasses produced are expensive. It would be most economical to remove all gas  50  from the cylinder. However, once the gas pressure inside the cylinder reaches atmospheric pressure, the gas  50  will not flow out by it self. Filling the displacement matter chamber  48  with water  52  will, however, force the last remaining valuable gas  52  out of the usable material passageway  16 . 
     Operation of Emptying Gas Cylinder  8 . 
     The emptying gas cylinder  8  is filled by removing the displacement matter cap  60 . Gas is pumped into the container  12  via the usable material passageway  16  until the displacement partition  28  collapses completely. At this point the displacement matter cap  60  is securely screwed back onto the emptying gas cylinder  8 . Gas  50  is then pumped into the usable material chamber  46  until the desired pressure is reached. 
     The consumer removes gas  50  normally via the conventional regulator  60 . When the internal pressure of the gas  50  is at atmospheric pressure, the displacement material cap  66  is removed. Water  52  is poured into the displacement matter chamber  48  via the displacement matter passageway  44 . Gas  50  will flow out the opened conventional regulator  60 . Water  52  is poured into the displacement matter chamber  48  until the emptying gas cylinder  8  is devoid of gas  50 . 
     Industrial Management of Air Sensitive Preparations, An Industrial Vat  9 . 
     Component Description of Industrial Vat  9 . 
     FIG. 9A shows a perspective view of a volumetric displacement device, industrial preparation, pharmaceutical preparation device, beer preparation, industrial vat  9 , constructed as an embodiment of the volumetric displacement device, which allows industrial size preparations to be produced and dispensed without atmospheric exposure. FIG. 9B shows a cutaway view of the device shown in FIG.  9 A. Referring to FIGS. 9A and 9B, except as noted, the industrial vat  9  is constructed. 
     Generally, the device is constructed in similar fashion to the soda saver  1  depicted in FIGS. 1A and 1B. Parts shown are similar in construction to the parts described for the soda saver  1  except as noted. 
     Generally, the industrial vat  9  is constructed of materials and in size similar to existing stainless steel vats. A container  12  is constructed of stainless steel. A pharmaceutical preparation  50  that is used to impregnate solid impregnable capsules  51  is the usable material. The displacement matter partition  28  is formed from Mylar ®. Water  52  is used as the displacement matter. 
     An access neck  78  is formed from the material of the container  12 , as part of the container  12 , so that the plastic forms an access neck passageway  80  within the access neck  78 . 
     A set of access neck male threads  82  are formed from the material of, and as part of., the access neck  78 . 
     A tank cap, access lid  72  of one piece, is formed of metal. The access lid  72  is similar in construction in both size and material to a conventional metal tank lid. 
     A set of access female threads  74  are formed from the material of, and as part of the access lid  72 . The threads are formed in such a manner that they mate securely with the access neck male threads  82 . 
     The access lid  72  is fitted with an access lid seal  76 , which is a thin disk of silicon rubber. The access lid seal  76  serves to tightly seal the access passageway  80  when the access lid  72  is securely screwed onto the access neck  78 , as the access lid female threads  74  firmly engage the access neck male threads  82 . 
     A conventional material pump  60  is fitted to the usable material neck  14  which will serve to pump pharmaceutical preparations  50  into the usable material chamber  46 . 
     A conventional one way valve  66  is fitted to the displacement partition clamp  34 . A conventional water reservoir  68  is fitted to the conventional one way valve  66 . The one way valve  60  is positioned so that water  52  placed in the conventional water reservoir  68  may flow into the displacement matter passageway  44 , but water  52  flow is restricted in the opposite direction. 
     A conventional petcock  70  is fit to the tank for the purpose of removing the usable material. 
     An electric mixing device, conventional submersible impeller  92  is installed in the container  12  to be used to stir and mix the usable material. A conventional submersible heater  94  and a conventional cooling device  96  are installed in the container  12  to control the temperature of the usable material. 
     A pair of conventional through container pipe fittings and pipes  99  are installed in the container for the purpose of bringing cold water into the industrial vat  9  to run through the coils of the conventional cooling device  96  to which the pipes are attached. 
     A conventional through container wire fitting and wires  98  are installed in the container  12  for the purpose of bringing electrical power into the industrial vat  9 . The wires are run to the conventional submersible heater  94  and the conventional submersible impeller  92 . 
     Device description of Industrial Vat  9 . 
     An industrial vat  9  has been created that can protect and produce air sensitive material that will never touch the air. Portions of the material can be removed and the remaining usable material left in the industrial vat  9  will not touch the air either. Neither will the chemicals of the usable material pollute the air. The usable material can be mixed, heated and cooled in the preparation process. 
     The chambers and passageways of the device function in a manner that is similar to the devices already described. 
     Ramifications of Industrial Vat  9 . 
     The industrial vat  9  on modification could be used for the industrial preparation of a wide range of materials. Fermenting and other growing products that require anaerobic conditions or that need to be isolated from contaminates can be contained in containers that are only partially filled with usable material for use in beverage making, pharmaceutical production, food stuffs, chemical production and other applications. Other types of devices coudd be installed in the vats for industrial control and regulation. Devices that read pH, temepratire, concentrations of various materials, and mixing speed are just some of the monitoring devices that could be installed. 
     Industrial vats  9  can be connected by piping or other means so that material can be transferred from one container to the next without becoming contaminated. Containers of precursor materials are fitted with volumetric displacement devices so that they too can transfer materials to the system without the material becoming exposed to the environment. Various vats in the industrial process can be connected to each other, the other vats containing volumetric displacement devices. Piping or other means can be employed to transfer material from the industrial vat  9  to the final container which can then be sealed and made ready for shipment. 
     An extremely conventional “conventional” pump  60 , that will actually soon be conventional, would be the material pump, paint dispenser pump  2   e , depicted in FIG.  2 E. By connecting with a hose, or other suitable means, the standard faucet  60   e  of the paint dispenser pump  2   e  to the usable material neck  14  of the industrial vat  9 , fresh material can be brought directly into the vat. 
     A bleed value at the top of the usable material chamber could be used to bleed off residual gas in the usable material chamber. In this manner, the usable material container can be kept full at all times. 
     In all, entire processes can be set up where the material in the processes can be stored in vats, processed in vats, removed from the vats, transferred to final containers for delivery to the consumer without the material, usable material ever being exposed to the atmospheric, air or environment. 
     Air can be used instead of water as the displacement matter. Pressure applied to the displacement matter would power the transfer of material about the industrial system. Pressure could be supplied by any of the previously mentioned pressure sources including the conventional pressurized tap water system, pumps and gravity displacement tubes. 
     Operation of Industrial Vat  9 . 
     The access lid  72  may be removed for bi-directional transfer of solid material between the environment and the container  12  during the phases of the operation that are not air sensitive. Access to the devices installed in the container  12  is also provided. 
     In phases of the operation where the usable material is air sensitive, usable material is pumped into the usable material chamber  46  by the conventional material pump  60 , via the usable material passageway  16 . If the usable material is sensitive to micro organisms, the industrial vat  9  may be sterilized prior to or after the introduction of the usable material. A conventional heating device, or steam, that will supply sufficient temperature may be utilized to heat the interior of the industrial vat  9  to sufficient temperature. Metal foil displacement partitions and high temperature plastics and rubbers would not be damaged by the heat. 
     Materials introduced to the industrial vat  9  may be stored in their own volumetric displacement devices which protect them from contamination. In this manner, a series of containers may be connected with piping, for example, so that material may be transferred from one container to the next without the various usable materials being contaminated. 
     Usable material is allowed to flow from the container  12  via the conventional valve petcock  70  or directly into piping for transfer to the next part of the operations or directly into containers of shipping. In all, the process can be set up so that no stage of the operation will see the usable material exposed to air. Industrial vats  9 , containers of precursor materials, containers along the process pathways where sub processing, alternate processing, and additional processing occur and containers of finished product are all maintained without exposure to atmospheric air and environmental contamination. 
     As usable material leaves the container  12 , water  52  will flow from the conventional water reservoir  68  through the conventional one way valve  66 , through the displacement matter passageway  44  and into the displacement matter chamber  48 . Water  52  is prevented from flowing backward into the conventional water reservoir  68  by the conventional one way valve  66 . The swirling action of the conventional submersible impeller  92  might otherwise drive water  52  out of the displacement partition  28  and into the conventional water reservoir  68 . 
     Electricity supplied through the conventional through container wire fitting and wires  98  and on to the conventional submersible impeller  92  and the conventional submersible heater  94  will power those devices so that the usable material can be mixed or heated. Cold medium pumped through the conventional through container pipe fittings and pipes  99  and through the conventional cooling device  96  can be used to cool the usable material 
     Retrofit Volumetric Displacment Device  10 . 
     Component Description of Retrofit Volumetric Displacment Device  10   
     FIG. 10A shows a perspective view of a volumetric displacement device, a retrofit volumetric displacement device  10 , constructed as an embodiment of the volumetric displacement device that fits into a pre-existing container. FIG. 10B shows a cutaway view of the device shown in FIG.  10 A. Referring to FIGS. 10A and 10B except as noted, the retrofit volumetric displacement device  10  is constructed. 
     A tank cap  12  of one piece, is formed of metal. The tank cap  12  is similar in construction in both size and material to a conventional fuel tank cap except that it has two necks formed into it. 
     A set of tank cap female threads  11  are formed from the metal of, and as part of, the tank cap  12 . The tank cap female threads  11  are formed in such a manner that they mate securely with a conventional fuel tank  72 , such as the tank that can be found on a conventional automobile. 
     The tank cap  12  is fitted with a tank cap seal  12 , which is a thin disk of silicon rubber. The tank cap seal  13  serves to tightly seal the passageway leading to the conventional fuel tank  72  when the tank cap  12  is securely screwed onto the conventional fuel tank  72  as the tank cap female threads  11  firmly engage the threads of conventional fuel tank  72 . 
     A usable material neck  14  is formed from the material of the tank cap  12 , as part of the tank cap  12 , so that the metal forms a usable material passageway  16  within the usable material neck  14 . 
     A set of usable material neck male threads  18  are formed from the material of, and as part of, the usable material neck  14 . 
     A displacement matter neck  20  is formed from the material of the tank cap  12 , as part of the container  12 , so that the material forms a displacement matter neck passageway  22  within the displacement matter neck  20 . 
     A displacement membrane, displacement partition  28  of one piece is constructed of a gas proof nitrile rubber. The displacement partition  28  is constructed as air tight bag in a shape that is roughly the same size and shape as the interior of the conventional gas tank  72 . 
     A displacement partition neck  29  is formed from the material of, and a part of, the displacement partition  28 . The size of the displacement partition neck is such that it will fit within the displacement matter neck passageway  22 . 
     The Material of the displacement partition neck  29  forms a displacement partition passageway  30  within the displacement partition neck  29 . 
     A displacement partition connector  32  of one piece is formed from metal. The displacement partition connector  32  is similar in construction in both size and material to a piece of pipe. 
     The material for the displacement partition connector  32  forms the displacement partition connector passageway  36  within the displacement partition connector  32 . 
     The displacement partition container  32  is inserted into the displacement partition passageway  30  as shown. 
     A displacement partition extension  38  of one piece is created by cutting off an appropriate length of conventional gas proof hose. The length of the hose should be such that when the final assembly is put into the automobile, the hose should run from the installed tank cap  12  to the displacement partition connector  32  when the displacement partition  28  is properly installed in the conventional fuel tank  72 . The material of the displacement partition extension  38  forms a displacement partition extension passageway  40 . 
     One end of the displacement partition extension  38  is fit over the displacement partition connector  32 . The other end is fit over the displacement matter neck  20 . 
     The ends of the displacement extension  38  are secured with conventional hose clamps  34 , as is the displacement partition neck  29 , as shown. 
     A usable material cap  60  of one piece, is formed of metal. The usable material cap  60  is similar in construction in both size and material to a conventional fuel tank cap. 
     A set of usable material cap female threads  62  are formed from the metal of, and as part of, the usable material cap  60 . The threads are formed in such a manner that they mate securely with the usable material neck male threads  18 . 
     The usable material cap  60  is fitted with a usable material cap seal  64 , which is a thin disk of nitrile rubber. The usable material cap seal  64  serves to tightly seal the usable material passageway  16  when the usable material cap  60  is securely screwed onto the usable material neck  14 , as the usable material cap female threads  62  firmly engage the usable material neck male threads  18 . 
     A displacement matter passageway  44 , is now defined which is composed of the displacement partition passageway  30 , and the displacement partition connector passageway  36 , the dsiplacvment partition extension passageway  40 , and the displacement matter neck passageway  22 . 
     The displacement partition  28 , when inserted into the conventional fuel tank  72 , divides the conventional fuel tank  72  into two chambers. The first chamber is a usabale material chamber which will hold usable material, in this case a fuel, gasoline. The second chamber is a diplacement matter chamber  48  which will hold displacement matter, air  52 . 
     The usable material chamber is accessed by the usable material passageway  16 , which is sued to put gas into the conventional fuel tank  72 . 
     The displacement matter chamber  48  is accessed by the displacement matter passageway  44 , from which air  52  will be expelled as gasoline is put into the conventional fuel tank  72 , and to which air will flow, from the environment, as the gasoline is used up. 
     Device Description of Retrofit Volumetric Displacement Device  10 . 
     Gasoline is loaded into the retrofit volumetric displacement device  10  via the usable material passageway in normal fashion. Gasoline leaves the tank headed for the gasoline motor via a conventional fuel line in normal fashion. What is different is the presence of a volumetric displacement matter chamber  48 . Air flows passively into the displacement matter chamber  48 , via the displacement matter passageway  44 , as the gasoline is removed from the conventional fuel tank  72 . 
     The benefits of the retrofit volumetric displacement device  10  are similar to the fuel device  7 . The conventional fuel tank  72  does require a conventional fuel pump, as the flow of air  52  into the displacement matter chamber  48  in this case is passive. 
     Ramifications of Retrofit Volumetric Displacement Device  10 . 
     The retrofit volumetric displacement device  10  can be adapted to fit a wide range of preexisting containers. This is valuable for those applications where the manufacturer does not install a volumetric device, but the consumer of the material desires the benefit of the device. Retrofit devices would in many cases be reusable and could be transferred from container to container. 
     Variation of Retrofit Volumetric Displacment Device  10 . 
     Similarly constructed, retrofit volumetric displacement devices  10 , of suitable design, material and size could be constructed to fit conventional containers to create effervescent beverage dispensers and savers, vapor-less paint and chemical dispensers, vapor-less volatile liquid vessels, squeeze bottles, cereal and other dry goods savers, chemical canisters, portable fuel containers, and gas cylinders. These device would go into specific preexisting bottles such as champagne, beer, wine, soda, transportable gas cans, liquid cans, many in configurations similar to the devices already described. Various retrofit devices are screwed, clamped, bonded, pressure fit to pre-existing containers. A champagne or wine bottle could be fit with a clamp on style cap that contains appropriately constructed necks and passageways. 
     Such devices could be constructed as caps that fit conventional containers. Narrow displacement matter passageways and narrow usable material passageway&#39;s constructed of tubular material, can pass through these caps which then screw on, clamp on, or fit into the existing opening of conventional containers. Large containers such as silos can be retrofit as well as vats, kegs and tanks of all sizes. The displacement partition might rolled up for insertion into the container. It is possible to envision a retrofit volumetric displacement device variation that would in general, fit into most preexisting containers available today. 
     A simpler device could be constructed that has no usable material passageway installed in the cap. The deflated displacement partition should be inserted into the container, the cap secured, displacement matter put into the displacement matter chamber, and the displacement matter chamber sealed for storage. In use, the displacement matter would be poured out of the displacement matter chamber, the cap and displacement partition removed or pressed to the side of the existing container passageway, and the usable material poured out of the existing container passageway. Alternately, the container could be fit with a petcock, spigot or other tapping device for draining usable material form the usable material chamber. 
     An even simpler device, although somewhat unwieldy, is an ordinary Mylar® balloon. If the container opening is small, the balloon is collapsed and put into a conventional partially consumed container with just the balloon neck sticking out of the container neck opening. The balloon is then filled with water, air, or other displacement matter. When the container is full, the balloon is sealed and may be allowed to float freely. The full container is sealed and the container will now receive all the benefits of a container in the full fill state, including the ability, if done properly, to protect effervescent beverages from going flat. 
     Operation of Retrofit Volumetric Displacement Device  10 . 
     The retrofit volumetric displacement device  10  is fit into an existing fuel tank. The displacement partition  28  is deflated, rolled up and inserted into the fuel tank passageway. The tank cap  12  is then screwed onto the existing threads of the fuel tank neck. Pre-existing vents to the fuel tank are sealed. 
     Operation of the retrofit volumetric displacement device  10  is generally analogous to the fuel device  7  already describe. 
     Industrial Applicability 
     A volumetric displacement device has been described that is far simpler than those previously described. The soda savers presented in their simplest embodiment have no pipes, reservoirs of water, water pressure sources, taps, spigots or valves. This means that these devices can be produced very economicaly, to the point of complete disposability, and are extremely easy to operate, needing no extra equipment or special hook ups. 
     Accordingly, besides the objects and advantages of the volumetric displacement devices described in the above patent, several objects and advantages of the volumetric displacement device follow. 
     (1) Embodiment of the volumetric displacement device, especially beer saver  1   c , wine saver  1   d , paint dispenser  2 , simplified paint dispenser  2   d , paint dispenser pump  2   e , improved toothpaste tube  3 , more convenient improved toothpaste tube  3   c , cereal saver  4 , calk dispenser  6 , a fuel device  7  and industrial vat  9 , provide an inexpensive and easy means to dispense usable material from containers with out the remaining unused portion of the usable material being exposed to atmospheric air either during or after the dispensing operation. Air contains oxygen, water vapor and contaminates which can damage usable materials. 
     (2) Embodiment of the volumetric displacement device, especially paint dispenser  2 , paint dispenser pump  2   e , improved toothpaste tube  3 , more convenient improved toothpaste tube  3   c , fuel device  7  and industrial vat  9 , provides means to dispense usable material from containers underwater, in space or in other material baths from being exposed to those environments. 
     (3) Embodiment of the volumetric displacement device, as stated in ramification 1 and 2, as a result of the above, greatly extends the life of materials stored in opened and partially used container, in preventing premature curing, degradation, oxidation, hardening, or skinning, for atmospherically cured materials. 
     (4) Embodiment of the volumetric displacement device, especially paint dispenser  2 , paint dispenser pump  2   e , improved toothpaste tube  3 , more convenient improved toothpaste tube  3   c , cereal saver  4 , fuel device  7 , industrial vat  9 , and retrofit volumetric displacement device  10 , provides means to prevent moisture condensation in fuel tanks and other storage containers. 
     (5) Embodiment of the volumetric displacement device, especially cereal saver  4 , provides means for limiting the absorption of atmospheric water by dried food stuffs such as crackers, dry cereal, snack chips, dried fruit, candy, and other organic material. 
     (6) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . paint dispenser  2 . simplified paint dispenser  2   d . and paint dispenser pump  2   e . provides means to prevent off gassing of usable materials stored in partially consumed containers. so as to prevent premature curing or aging damage. 
     (7) Embodiment of the volumetric displacement device. especially paint dispenser  2 . simplified paint dispenser  2   d . and paint dispenser pump  2   e . and fuel device  7 . provides means to successfully limit evaporation of usable materials stored in partially consumed containers. 
     (8) Embodiment of the volumetric displacement device. especially cereal saver  4 . provides means for limiting freezer burn to usable materials stored in partially emptied containers that are placed in frozen storage. 
     (9) Embodiment of the volumetric displacement device. especially paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . fuel device  7 . and retrofit volumetric displacement device  10 . provides means to prevent dangerous air fuel mixtures from developing in partially empty fuel tanks and to prevent flammable air mixtures from developing in other partially empty flammable volatile liquid containers. 
     (10) Embodiment of the volumetric displacement device. especially variations of cereal saver  4 . provides means to eliminate combustible dust air mixtures. 
     (11) Embodiment of the volumetric displacement device. especially paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . cereal saver  4 . and fuel device  7 . provides means to reduce the amount of toxic or unpleasant smelling vapors that are emitted from containers by reducing the amount of air space in the container and the surface area of the material exposed to the atmosphere. reducing environmental pollution and health risks. 
     (12) Embodiment of the volumetric displacement device. as exemplified by the technology shown in paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . cereal saver  4 . and fuel device  7 . provides means to reduce odors in waste disposal and septic systems with holding tanks. 
     (13) Embodiment of the volumetric displacement device. especially soda saver  1  and beer saver  1   c . provides an inexpensive and easy means to prevent effervescent beverages from going flat after their container has been opened and partially consumed. 
     (14) Embodiment of the volumetric displacement device. especially soda saver  1  and beer saver  1   c . provides means to replenish effervescence in valuable beverages that have already gone flat. 
     (15) Embodiment of the volumetric displacement device. especially soda saver  1  and beer saver  1   c . provides means to conveniently cool drinks and other material with ice while the ice does not dilute the drink or other material with water. 
     (16) Embodiment of the volumetric displacement device. especially the improved toothpaste tube  3 . more convenient improved toothpaste tube  3   c . and oil dispenser  5 . provides a means to make squeexe tubes and bottles deliver usable material as if they were full. 
     (17) Embodiment of the volumetric displacement device. especially the improved toothpaste tube  3 . more convenient improved toothpaste tube  3   c . and oil dispenser  5 . provides means for easier and more controllable delivery or liquid or semi-liquid decorations and material administrations. such as cake icing. artist&#39;s preparations. glue. 
     (18) Embodiment of the volumetric displacement device. especially the improved toothpaste tube  3 . more convenient improved toothpaste tube  3   c . oil dispenser  5 . and fuel device  7 . provides means to deliver material in squeeze tubes and squeeze bottles (such as glue or mustard) readily in an upward direction even when container is mear empty of usable material. 
     (19) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . paint dispenser  2 . paint dispenser pump  2   e . oil dispenser  5 . fuel device  7  and industrial vat  9 . provides means for containers with simple taps. spigots. stopcocks. petcocks or fittings to have the tap at any location in the container eliminating the need to have gravity bring the usable material to the bottom of the tanl for exit at that low point. 
     (20) Embodiment of the volumetric displacement device. especially the improved toothpaste tube  3  and more convenient improved toothpaste tube  3   c  provides means to nearly empty a squeeze tube without undo effort. 
     (21) Embodiment of the volumetric displacement device. especially the emptying gas cylinder  8 . provides means to almost completely empty valuable gas stored in cylinders. 
     (22) Embodiment of the volumetric displacement device. especially fuel device  7 . provides means to prevent fuel in tanks from sloshing (shifting) without baffles. 
     (23) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . wine saver  1   d . and paint dispenser  2 . provides means to reduce frothing of liquids in containers caused by sloshing. 
     (24) Embodiment of the volumetric displacement device. especially paint dispenser  2 . and industrial vat  9 . provides means to reduce labor in opening and closing air vents on containers in some instances. 
     (25) Embodiment of the volumetric displacement device. especially paint dispenser  2 . provides means for the dispensation of usable material in metered (measured) allotments without exposing the unused material to the atmosphere. 
     (26) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . wine saver  1   d . paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . and the squeeze bottle variation of the improved toothpaste tube  3 . provides means for extra stability by providing full containers which don&#39;t tip over so easily. even when the contents are partially consumed. 
     (27) Embodiment of the volumetric displacement device. especially the improved toothpaste tube  3  and more convenient improved toothpaste tube  3   c . provides means to positive human psychological effects from using containers that seem full. 
     (28) Embodiment of the volumetric displacement device. especially paint dispenser  2 . provides means to take paint. and other materials out of a can. use it for brush dipping or paint rolling. and to return the paint neatly to the can. 
     (29) Embodiment of the volumetric displacement device. especially paint dispenser pump  2   e . and fuel device  7 . provides means to tnexpensively pump materials. That means also provides isolation of the usable material from the atmosphere. pollutants in the atmosphere. and water vapor in the atmosphere: extended life of the stored material by isolation from the atmosphere: reduced pollution of the environment by toxic volatile material stored in the container of the pump device: and vapor free storage of volatile flammable liquids. 
     (30) Embodiment of the volumetric displacement device. especially oil dispenser  5  and its variations. provides means to deliver material from pressurized containers generally at a uniform pressure. even as the usable material in the container is depleted. 
     (31) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . wine saver  1   d . paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . cereal saver  4 . calk dispenser  6 . fuel device  7  and containment for industrial apparatus  9 . provides means to conserve natural resource and energy by making larger containers which have a greater usable material to container material ratio. and to make fewer containers. 
     (32) Embodiment of the volumetric displacement device. especially soda saver  1 . beer saver  1   c . wine saver  1   d . paint dispenser  2 . simplified paint dispenser  2   d . paint dispenser pump  2   e . cereal saver  4 . calk dispenser  6 . fuel device  7  and industrial vat  9 . provides means to conserve natural resource and energy through increased product life. 
     (33) Embodiment of the volumetric displacement device. especially oil dispenser  5 . provides means to deliver material from pressurized containers generally at a uniform pressure. even as the usable material in the container is depleted. with non-environmentally damaging propellant gas. 
     Summary of Variation Ramifications. 
     While the above description contains many specifications, these should not be construed as limitations on the scope of the invention, but rather as an exemplification of the preferred embodiment thereof. Many variations presented on particular described embodiment are applicable to the other described embodiment as well as to embodiment not presented. Many other variations are possible. Some of these variations are presented in the following ramifications section. 
     Device Variation Ramifications. 
     The volumetric displacement may be inexpensive enough to be sold with each container made, on a disposable basis. 
     The embodiment shown and others produced in accordance with this convention might also be produced independently for storage of material by the consumer. As such, they would be sold as an independent unit into which partially consumed usable material could be transferred. 
     Size Variation Ramifications, Industrial to Consumable. 
     Volumetric displacement devices can be built in a wide range of sizes. Virtually any size container for material could benefit in some applications with is technology. Industrial size storage containers, large consumer sizes, and even individual small consumption sized containers could be set up as volumetric displacement devices. 
     Variations have previously been presented of large storage tanks, tankers and silo&#39;s. Effervescent beverages are created in industrial size vats, shipped n kegs, distributed in containers of size enough to serve many people, a few people, or for individual consumption. Air sensitive materials are stored in a wide range of sizes from industrial size containers to individual consumption size. Generally, these sizes of containers could be made or retrofit with the volumetric displacement device, thus gaining the advantages of the device after partial consumption of the usable material in the container. 
     Shape and Material Variation Ramifications. 
     The variabiltiy in shape for volumetric storage device is greater than the number of shapes for storage devices available today. Barrels, bottles, cans, carafes, casks, drums, flagons, flasks, holding tanks, tanks, supertankers, vats, vessels all have shapes as well as material and size that are suitable for volumetric displacement devices. 
     A wide variety of materials could be used including plastic, glass, metal and ceramic. 
     The locations for the necks of the containers is variable. It is possible to envision containers with different sorts of movable partitions and different arrangements of openings and bag locations. 
     All of the presented embodiment can be utilized with the usable material placed in what is presented as the displacement matter chamber and with the displacement matter in what is presented as the usable material chamber. For this reversing of the function of the usable material chamber and the displacement matter chamber, some of the embodiment require no modification from what is presented. Others require minor modifications such as moving a spout or valve. 
     Usable Material Ramifications Variation Ramifications. 
     The materials than can benefit from volumetric displacement devices are numerous. A partial list is presented here. 
     The soda saver  1  would work with virtually any effervescent beverage, carbonated drink. Beer, ale, lager, champagne, seltzer, sparking wines, sparkling water, mineral water, hard apple cider, carbonated wine coolers, spritzers, carbonated fruit drinks and punch, quinine water, root beer and effervescent beverages sold or known by other names would be protected from going flat in the soda saver and its variations. 
     Many chemicals are atmosphere sensitive. Fine wines, paints, glues, varnish, shellac, brake fluid, coatings, casting materials, pharmaceutical preparations, are just some. 
     In all, their would be less fire risk, less loss of material through evaportaion, less environmental damage, and less toxic exposure to humans from volatile liquids, flammable solvents, organic liquids, toxic chemicals, pesticides, petroleum derivatives, gasoline, acetone, ketones, naphtha, toluene, etyhlene, methanol, ethanol, ether, lacquer thinner, alcohol, kerosine and many more materials. 
     The ability of the device to deliver liquids in a neat manner could be applied to many products. Liquid soaps, detergents, cleaners, oils both cooling and machinery, and industrial chemicals are just some of the examples of materials that often are associated with a messy container. In fact, gravity driven water will serve as a pump for many materials. 
     With the volumetric displacement devices installed, smells from containers are reduced. This is suitable for chlorine bleaches, ammonia, vinegar, epoxy glues, sewage and septic tanks, sewage trucks, fertilizers, and other foul smelling chemicals. 
     Artists paints in tubes, foods, cosmetics, chemicals, dyes, calk, glues, putty, runny stuffs, lubricationg and penetrating oil, and many more materials would benefit from a tube or bottle that always seems full. 
     The volumetric displacement technology can be applied to granular solids and powders. Granular solids are found in many places including grain silos, dusty bins, packaging in small to large applications. Many minerals and chemicals are shipped as powders. Volumetric displacement technology can be used to reduce dust from these sources. 
     The number of materials that the technology could be employed in to prevent water absorption are numerous. Organic material such as cookies: crackers: snack foods such as potato chips. pretzels. cheese twists. corn chips. and popcorn are just a few that would benefit. 
     Diplacement Matter Variation Ramifications. 
     Displacement matter can be a wide variety of substances. In general, virtually any matter in one instance of another could serve as displacement matter. Air and water are the two most common examples. Pressurized gases can serve as displacement matter. CO 2  cartridges, pressurized gas cylinders, and pumps can be attached appropriately to the displacement matter passageway to provide compressed gas to the displacement matter chamber. In a sealed displacement matter chamber, these gases will not contaminate the usable material and neither will the gasses produced by the usable material be able to enter the displacement matter chamber. 
     Water can be introduced to the displacement matter chamber under pressure supplied by a pump, gravity or a conventional pressurized tap water system. This pressure can be used to compress a volume of gas in the usable material chamber, or to drive, dispense usable material from the container. 
     Ice, in some instances will serve as displacement matter because many usable materials could be chilled with ice in the displacement matter chamber. Material that is chilled with ice in the displacement matter chamber is not contaminated with the water that the ice produces as it melts. Ice can be added to the usable material chamber as well. 
     A pump could pump air into the displacement matter chamber instead of water. Alternatively, air could passively enter the displacement partition. The constraint of having to keep the material from being contaminated can also be relaxed in some applications. For example, exposing the toothpaste to the air for brief periods of time might not damage it. Therefore, it would be possible to open up the back end of the toothpaste tube, stuff objects into it and re-close the tube. 
     The technology can prevent liquids from sloshing in half empty containers by filling the interiors with non-compressible material. Fuel tanks in mobile vehicles could have well contained liquids onn board. An extremely slosh proof application would have water injected into the displacement matter chamber. 
     With proper adaptation, air could be blown into the displacement matter chamber of the paint dispenser by a human, instead of water, as it could be with other embodiment of the volumetric displacement device. Many materials both compressible and non-compressible could be used as displacement matter. 
     Neck and Passageway Variation Ramifications. 
     By extending the length of the usable material neck, making it taller, the ease with which the fill level of the usable material could be brought up into the narrow usable material neck would be increased. This is beneficial in preventing the usable material from being exposed to the atmosphere. As the passageway becomes narrower, the surface area of the liquid that is exposed to the atmosphere is smaller. As the surface area of that interface between the usable material and the atmosphere diminishes, so does the contamination of the usable material and the contamination of the environment. If the interface is small enough, the contamination effects become negligible. For many applications, and for most painting applications, this would be perfectly acceptable. The benefits of this have already been explained. 
     A narrow displacement matter passageway, that is with a small inside diameter, would prevent the membrane of the displacement partition from ballooning out of the opening. 
     Flexible necks can be incorporated on the volumetric devices. Appropriate offset angles for the neck or flexible necks, make its use easier and more convenient. 
     Devices without separate usable material passageways are possible, where the displacement partition is inserted and removed from the same neck of the container that serves as a passageway for the usable material. This is discussed more fully in the description of the retrofit volumetric displacement device  10 . 
     Displacement Partition Variation Ramifications. 
     There are numerous materials for displacement partitions used in different applications. Already discussed is Mylar®, but metal foils without plastic backing would work in satisfactory manner in many instances. Aluminum foil can make a tough membrane that resists tears and punctures if not folded. As the material for the displacement partition, in a disposable package, it would withstand the small amount of wear it would be subjected to. 
     Many materials such as plastics, rubber, and metal will form membranes, foils or can be made into generally flat forms. Plastics and rubbers such as butyl, CPE, cross linked polyethylene, EPDM, fluorocarbon, latex natural rubber, neoprene, nitrile, nylon, polyester, polyethylene, pvc, teflon,thermoplastic urethane, vinyl and others can be utilized to make displacement partitions. These materials can be used sometimes by themselves, or in combination with other materials. Material combinations are selected so as to be impervious to the compound, usable material, displacement matter they are required to be next to. For almost any chemical, there can usually be found a rubber, plastic, displacement partitiom material combination, that willnot be damaged by that chemical. 
     Displacement partitions in various embodiment can be made from materials that are rigid, flexible, or elastic. 
     Some applications will have ddisplacement partitions that can be rolled up for insertion into the container. The displacement partitions will later unfurl. The displacement partition in some applications can be eliminated. Already describe in the soda saver description is a method for using conventional glass marbles as the displacement matter. An agent, immiscible with the container&#39;s contents, would eliminate the need for a physical barrier between the contents of the container and the displacement matter chamber. For example, if one poured oil into the soda container, and it did not contaminate the soda, it would provide the necessary volume to fill the container and prevent degassing of the soda. This would prove to be an acceptable solution, and would fall under the protection of the claims in this patent application. 
     In a squeeze container, the introduction of air, if it were immiscible with the contents, would provide a way to “keep the container full”. Forcing fully immiscible, self drying calk into a tube of toothpaste would fill the tube allowint the container to be full, without contaminating the toothpaste, Oil in a sealed vinegar bottle will fill the bottle, not mix with the vinegar, protect the vinegar from the atmosphere&#39;s deleterious effects, and prevent the vinegar from off gassing. 
     The shape of the displacement partition contributes is many instance to the efficiency of the volumetric displacement device. If the container has an extensive usable material neck, the designer of the displacement partition might include the shape of the usable material neck in the shape of the displacement partition. This would more effectively fill the container when it is nearly empty of usable material. 
     A refinement is to shape the displacement partition and the container as well at to control the location of the necks so that the displacement partition would not block the usable material passageway as the effervescent beverage poured out. Various interior ridges, members and channels added to either the displacement partition or the interior of the container would also accomplish this purpose. 
     A design feature is the addition of a vent between the contents chamber and the top to the non compressible matter chamber. This vent could be valved. Off gassing pressure in the contents chamber would force the non-compressible material out an improperly sealed displacement matter passageway. If, however, the gas vented to the top of the displacement matter passageway, the gas would escape the leak rather then the displacement matter, thus preventing a messy overflow. A level sensor could be employed to activate the valve. 
     Clamp, Flange, and Adhesive Variation Ramifications. 
     The displacement partition clamp with proper design can be eliminated from much of the embodiment depicted. By bonding the displacement partition neck directly to the inside wall of the displacement matter neck a simpler device is created without need for a displacement partition clamp. In the soda saver  1 , internal pressure would press the displacement partition neck into the bond that holds it to the inner wall of the displacement matter neck making the bond very effective. 
     Various adhesives, glues, hot melts, heat bond or welds could be employed to make the attachment. 
     The displacement partition neck can also be bonded directly to the displacement partition clamp without sandwiching it between the displacement partition clamp and the displacement matter neck lip. The displacement partition neck can be clamped in a two piece displacement partition clamp which attaches to the container. This variation provides an easy way to remove and replace the displacement partition. With this variation usable material can can be transferred in a bi-directional manner between the usable material chamber and the environment in a container that only has one neck and passageway. The displacement matter neck passageway and the usable material neck passageway are one. With the displacement partition clamp and the displacement partition installed, the passageway serves as the displacement matter neck passageway. With the displacement partition clamp and the displacement partition removed or sufficiently loosened, the passageway now serves as the usable material neck passageway. 
     Modifications of the displacement partition clamp that allow the displacement partition clamp and the displacement partition to be removed from the container, allow for easy cleaning of the container and the displacement partition. Such modifications include the above as well as two piece displacement portion clamps that hold or securely clamp the displacement partition flange. Such modification allows for more ready reuse of the volumetric displacement device. 
     Cap and Valve Variation Ramifications. 
     Manufacturing conventions may develop that clearly delineate which cap goes on which neck. For example a hexagonal or red displacement matter cap exterior would make it look and feel different from the usable material cap. Manufacturers would add tamper proof caps. 
     Caps with simple valves are currently used on conventional containers such as those found on conventional shampoo bottles and body lotions. By pressing a spot on the cap, the valve opens and material can be delivered by turning the bottle upside down and squeezing. these simple cap balves and the variolus styles of them can be fitted to volujmetric displacement devices. 
     One piece caps can be made that do no require a separate seal to be made. Conventional toothpaste tubes currently are nade this way, that is, with a one piece cap. 
     Caps would have a variety of attachment mechanisms. Caps can pressure fit into the neck opening as corks in wine bottle do. They can be clamped on. 
     There is an enormous variety of valves available that would work at the various valved locations on the devices presented. Caps that tightly seal, valves, ball valves, controllable valves, spigots, faucets, cocks, petcocks, atopcocks, caps with with valves, and one way valves are some examples. 
     Valves can be fit to spigots, taps installed at virtually any location in the container wall, serving to drain or fill either the displacement matter chamber or the usable material chamber. They can be installed at the top or at the bottom of the container. Exit and entrance location for volumetric displacement devices are largely irrelevant since the chambers, when in the full state, act as if they are full. Fluid folws out openings in virtually any direction at any location that the container has beeen tapped. 
     A variety of valves can be envisioned at the spout. One way valves, and valves that open upon activation, might each prove to be useful. The spout can be made and used with no valve in it. With no valve, the material would wimply folw out in proportion to the amount of displacement matter added, although no specific seal wwould exist to prevent slight air contamination of the unused usable material. 
     With a user controlled on/off valve, higher water pressure could be maintained and the flow of paint would be quicker. A completely contaminant free usable material could be maintained. Many sorts and styles of valve control are possible including buttons, levers, faucets, stopcocks, electric control and more. 
     Spout and Displacement Tube Variation Ramifications 
     The spout passageway could be made very narrow. If it were narrow enough, the need for a valve would be reduced as no atmspheric air could enter the spout passageway to displace the usable material in the passageway. The effect described here is the same as when a finger is held over the upper end of a filled soda straw, or pipette tube. No air can enter the narrow passageway with material present in it. 
     The displacement tube can be made taller to increase the delivery pressure of the usble material out the spout of the paint saver device. The spout can also be made with a very wide mouth to admit water easily. It can be made funnel like. 
     Container Vent Variations Ramifications. 
     Containers that pour their contents, frequently have vents that allow air into the container as the usable material is poured out. This prevents the container from “glugging” as the material tries to exit, at the same time air is trying to get in. The incoming air and the fluid compete for th opening. A typical way to avoid this problem is exhibited by a gas container with two openings, one to pour gas out, the other to admit air. An otherwise sealed container with a cock at the bottom, will necessarily require a vent, generally at the top of the container to admit air. 
     In general, the volumetric displacement device is admitting displacement material in operation, whether air, water or some other matter. The admittance of the displacement matter eliminates the need for an extra vent, other than what has already been installed for th displacement device. 
     The volumetric displacement device alters the need for the air vent in a container. 
     Extra Variation Ramifications. 
     Appropriate mixing devices incorporated into containers would allow for mixing the contents and never allowing any contamination to enter the usable material chamber. A sealed entrance into the usable material chamber, either for electric wire or impeller crank, would provide a means to mix the contents of the container. An extremely neat and mess free operation could thus be achieved. 
     Environment Variation Ramifications. 
     Not only will this device protect usable material from air, a device employing this technology might be emptied in a bath of other materials without the materials of the bath contaminating the chemical. Dispensing of material underwater, in other material baths and in space are examples. 
     The technology can be used in containers for the prevention of freezer burn. That is, materials stored in partially full containers that are placed in freezing environments, will not loose water to the atmosphere, if the volumetric displacement device is installed in the container. 
     Scope. 
     Thus the scope of the invention should be determined by the appended claims and their legal equivalents, rather than by the examples given.