Abstract:
An apparatus is provided for containing a fluid, and for controlling the release and flow of the fluid. The apparatus includes a container having a mouth, a neck with a circumferential sealing region on its inner surface, a body, and a resistance stop. The apparatus further includes a barrier flap which can significantly arc transverse to its length, disposed within the neck of the container, and hingedly pivot between “open” and “closed” positions. The barrier flap is cooperative with the circumferential sealing region and the resistance stop within the neck. Squeezing the body increases internal pressure within the container, resulting in a release of the barrier flap past the resistance stop, allowing the fluid to flow out of the container. Also, squeezing the neck causes arcing and release of the barrier flap, allowing the fluid held in the container to flow past the barrier flap and out of the container.

Description:
FIELD OF THE INVENTION  
       [0001]     This invention relates to vessels for containing fluids, and particularly to a container for facilitating controled release and flow of fluid therefrom.  
       BACKGROUND OF THE INVENTION  
       [0002]     There are many fluids on the market today that must be accurately and carefully poured into a small opening without spilling any of the fluid during the process of pouring it. Often, the fluid is toxic, difficult to clean, costly, or some combination thereof.  
         [0003]     Motor oil is a fluid that frequently is poured and inadvertently spilled, creating an undesirable situation. Motor oil is commonly sold in plastic bottles that are typically available in two sizes: one-quart and one-gallon containers. When the motor oil contained therein is poured into the small opening leading into the oil case of an engine, a separate funnel (disposable or non-disposable) is often required to direct the poured oil into the small opening of the oil case. The assistance of a funnel is used to avoid messy and difficult-to-clean spills on and around the engine. However, many times a funnel is not conveniently located nearby for use when pouring the oil. Without a funnel, successfully directing all of the oil poured from a motor oil container into the small opening of the engine oil case can be difficult and challenging for many people.  
         [0004]     In addition to fouling the engine area with oil and oil residues, the hand of the person pouring the oil can also become contaminated with oil. The spillage on the engine is cumbersome and time consuming to clean, as well as being harmful to the environment. And even with the use of an oil funnel, spills can occur on the engine immediately when the funnel is withdrawn from the oil case prematurely. Also, non-disposable funnels need to be carried and stored carefully and appropriately, but many times the funnel is simply placed on a dusty shop floor or in a similarly open, dirty contaminated holding area.  
         [0005]     Office water coolers provide another example of a common pouring problem from an inverted container. Water bottles typically are delivered for use with a dispenser that requires that the water bottle first be opened, and then inverted prior to resting on top of the dispenser. However, the bottle is very large, and a large volume of water is heavy. During the process of lifting and inverting the bottle, the water begins to pour out of the bottle and onto the floor, even before the open mouth of the bottle is inserted within the top of the dispenser. The water that escapes the bottle typically falls on the floor around the dispenser, leaving a puddle that must be removed to avoid causing a possible slip-and-fall accident.  
       SUMMARY OF THE INVENTION  
       [0006]     In one general aspect, the invention includes a container, which when inverted, can be controllably inserted into an opening, such as the oil crankcase of an engine or the like, and then squeezed, at will, to release the contents of the container into the crankcase opening. In one case, a squeezing action applied to the main body of the container increases the container&#39;s internal pressure, resulting in the release of a closed barrier flap, thereby allowing the fluid contents to flow out. The invention thereby eliminates all of the above-mentioned problems that are associated with pouring a fluid, such as motor oil or spring water, without the use of a funnel. In an alternate case, a squeezing action is applied to the neck of the container, thereby causing direct arcing compression of the barrier flap disposed within the neck. The compression applied upon the neck wall urges the barrier flap past the resistance stop and into an open position, thereby allowing the fluid held in the container to flow past the barrier flap and out of the container.  
         [0007]     The container of the invention is especially useful for facilitating controlled release and pouring of liquids stored in a container that are poured by inversion, such as automotive fluids, including motor oil, windshield washer fluid, break fluid, transmission fluid, as well as fluids in other environments, such as natural spring water bottles for use with water coolers.  
         [0008]     For example, the container of the invention allows a user to pour oil directly into an engine&#39;s oil case without the need of a separate funnel. It is this ease of use that enables people whom would not ordinarily attempt to replace fluids in an automotive or office environment to successfully accomplish this otherwise difficult and messy task. The “do-it-yourself” person will find added convenience and simplicity. There is no mess before, during, or after the pouring action. In addition, there is no direct inadvertent contact of the user with the poured contents of the container. The user can also more easily control the release timing and quantity of liquid flow from the container. The invention can be operated with only one hand, further demonstrating the convenience of operating the invention, in contrast with the use of a standard container aided by a separate funnel typically requiring at least two hands.  
         [0009]     The invention is advantageously pre-filled with a hard-to-pour liquid that must be carefully controlled during pouring, such as motor oil, and sold to the consumer for personal use; or sold to the professional, such as an auto mechanic, for professional use. The consumer will benefit by being relieved of the need for a funnel, and being spared the fear of contacting oil, or of causing a mess. An auto mechanic will benefit from the invention by avoiding the need to spend extra time and energy using and storing a contaminated funnel, and by avoiding the need to clean a possible spillage of oil after it&#39;s poured.  
         [0010]     An important advantage to a manufacturer of the invention is its low cost of manufacturability, and its simple structural design, thereby minimizing required manufacturing steps and minimizing procurement of additional materials beyond that of a standard motor oil bottle.  
         [0011]     Further, the value added by this invention will benefit a company by increasing the value of its brand by association with the invention. Consumers will associate the container&#39;s ease-of-use, avoidance of mess, and added convenience with products packaged within the container. These benefits will enable a company that incorporates the container to create an innovative marketing strategy capable of capturing new market share from competitors.  
         [0012]     As recognized by the invention, the container of the invention does not need an additional funnel inside the bottle because the standard motor oil bottle already has a built-in funnel included in its molded shape. Also unlike other container types, there is no need to pull out an internal funnel or twist any rotary part of the bottle to release fluid therefrom. Moreover, after the container is opened, such as by removing a seal or cap, there is no need to touch anything inside the container to commence pouring. Also, the user does not need to touch anything having liquid residue after the previously contained liquid has been poured.  
         [0013]     The container of the invention allows a user to avoid having any contact with the contents of the container, while providing independent control over both inversion of the container, and release of the fluid contained therein.  
         [0014]     In one general aspect, the invention provides an apparatus for containing a fluid, and for controlling the release timing and flow of the fluid contained therein. The apparatus includes a container having a mouth, a neck, and a body, an inner surface of the neck including a circumferential sealing region, and a resistance stop. The apparatus further includes a barrier flap that can substantially arc and hingedly pivot, which is disposed within the neck of the container. This barrier flap functions in conjunction with the circumferential sealing region and the resistance stop.  
         [0015]     In a preferred embodiment, the circumferential sealing region includes a circumferential sealing ridge. In another preferred embodiment, an edge of the moveable substantially flexible flap is capable of being in sealed relationship with the circumferential sealing region.  
         [0016]     In a further preferred embodiment, the flap is hingedly connected to an inner wall of the container&#39;s neck. In an alternate preferred embodiment, the flap is pivotally connected to an inner wall of the neck of the container. In yet another embodiment, the flap is arcuate.  
         [0017]     In another preferred embodiment, an edge of the barrier flap is in sealed relationship with an inner wall of the neck of the container when the barrier flap is in a closed position. In a further preferred embodiment, the inner wall of the neck of the container includes the circumferential ridge, and the edge of the barrier flap is engaged as a seal together with the circumferential ridge when the barrier flap is in the “closed” position.  
         [0018]     In a preferred embodiment, the barrier flap includes optional longitudinal grooves running parallel to a longitudinal bending axis of the barrier flap, the grooves being for facilitating arcing of the barrier flap, the longitudinal axis being perpendicular to a transverse opening axis. In an alternate preferred embodiment, the barrier flap includes longitudinal bending regions running parallel to a longitudinal bending axis of the barrier flap, the grooves being for facilitating arcing of the barrier flap, the longitudinal axis being perpendicular to a transverse opening axis. In a further preferred embodiment, the longitudinal bending regions are of a different material than other regions of the barrier flap.  
         [0019]     In yet another preferred embodiment, the barrier flap is maintained in a closed position by the resistance stop. In a further preferred embodiment, the barrier flap is maintained in a closed position by the resistance stop, the resistance stop being cooperative with the circumferential sealing region.  
         [0020]     In other embodiments, the apparatus further includes a guard, disposed between the neck and the mouth of the container, and shaped so as to prevent the barrier flap from exiting with the fluid out of the container in the event that the barrier flap becomes detached from the inner neck wall of the container. In a preferred embodiment, the guard spans the mouth of the container.  
         [0021]     In various other embodiments, the mouth is narrowed so as to prevent the barrier flap from exiting with the fluid out of the container in the event that the barrier flap becomes detached from the inner neck wall of the container.  
         [0022]     In other preferred embodiments, the neck of the container is squeezable. In additional preferred embodiments, the body of the container is squeezable.  
         [0023]     In another general aspect of the invention, an apparatus for containing a fluid, and for controlling the release and flow of the fluid contained therein, includes a container having a mouth, a neck, and a body; as well as a valve, disposed within the neck of the container. The valve includes a circumferential sealing element cooperative with an inner wall of the neck, a resistance stop cooperative with an inner wall of the neck, and a moveable substantially arcable barrier flap, cooperative with the circumferential sealing element and the resistance stop, so as to prevent the release and flow of the fluid contained therein when the barrier flap is in a “closed” position.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0024]     The invention will be more fully understood by reference to the detailed description, in conjunction with the following figures, wherein:  
         [0025]      FIG. 1 . is a front view of a container having a neck with an inner circumferential sealing region which encircles the inner circumference of the neck;  
         [0026]      FIG. 2 . is a side view of a container showing the inner circumferential sealing region which encircles the inner circumference of the container&#39;s neck;  
         [0027]      FIG. 3 . is a front view of the container of  FIG. 1  showing a barrier flap, and a hand in position to squeeze the body of the container, wherein the barrier flap is in the “closed” position;  
         [0028]      FIG. 4 . is a front view of an inverted container showing a barrier flap in the “closed” position, and the hand in position to squeeze the bottle;  
         [0029]      FIG. 5 . is a front view of an inverted container showing the barrier flap in the “open” position, and the hand holding the container after squeezing the body of the bottle so as to commence fluid flow;  
         [0030]      FIG. 6 . is a front view of the container showing the barrier flap in the “closed” position, and the hand in position to squeeze the neck of the container so as to urge the barrier flap into the “open” position;  
         [0031]      FIG. 7 . is a front view of a tilted container showing the barrier flap in the “open” position, thereby allowing the liquid to flow out when the container is tilted;  
         [0032]      FIG. 8 . is a side view of the barrier flap showing it in a flat and un-arced configuration;  
         [0033]      FIG. 8 . 5 . is a side view of the barrier flap showing it in a flat and un-arced configuration, here also including a “spring-like” hinge in the “open” position;  
         [0034]      FIG. 9 . is a side view of the barrier flap showing it in a flat and un-arced configuration, also showing a protective film covering the barrier flap;  
         [0035]      FIG. 9 . 5 . is a side view of the barrier flap showing it in a flat and un-arced configuration, also showing the protective film covering the barrier flap, and the “spring-like” hinge in the “open” position;  
         [0036]      FIG. 10 . is a front view of the barrier flap showing it in an un-arced and “open” position;  
         [0037]      FIG. 10 . 5  is a front view of the barrier flap showing it in an un-arced and “open” position, the barrier flap also having a “spring-like” hinge;  
         [0038]      FIG. 11 . is a front view of the barrier flap showing it in an un-arced and “closed” position;  
         [0039]      FIG. 11 . 5 . is a front view of the barrier flap showing it in an un-arced and “closed” position, the barrier flap also having a “spring-like” hinge;  
         [0040]      FIG. 12 . is a front view of the barrier flap showing it in a “closed” position as it would be inside a container;  
         [0041]      FIG. 12 . 5 . is a front view of the barrier flap showing it in a “closed” position as it would be inside a container, the barrier flap also having a “spring-like” hinge;  
         [0042]      FIG. 13 . is a top view of the barrier flap showing it in an un-arced and “open” position;  
         [0043]      FIG. 14 . is a top view of the barrier flap showing it in a slightly arced and “open” position;  
         [0044]      FIG. 15 . is a side view of the barrier flap showing it in a slightly arced and “open” position, the barrier flap also having a “spring-like” hinge;  
         [0045]      FIG. 16 . is a front view of a container showing the barrier flap in its slightly arced and “closed” position;  
         [0046]      FIG. 17 . is a front view of a container showing the barrier flap in its arced and “open” position;  
         [0047]      FIG. 18 . is a side view of a container showing the barrier flap in its arced and “closed” position;  
         [0048]      FIG. 19 . is a side view of a container showing the barrier flap in the substantially arced and “open” position;  
         [0049]      FIG. 20 . is a close up cross-sectional front view showing the circumferential sealing region, resistant stop, and indented opening in the container&#39;s neck;  
         [0050]      FIG. 21 . is a close up front view showing the circumferential sealing region extending all around the circumference of the neck;  
         [0051]      FIG. 22 . is a close up front view showing the circumferential sealing region extending all around the circumference of the containers neck, also showing the barrier flap in its slightly arced and “closed” position within the container;  
         [0052]      FIG. 23 . is a close-up front view showing the barrier flap showing it in its substantially arced and “open” position;  
         [0053]      FIG. 24 . is a cross-sectional side view showing the circumferential sealing region, also showing a resistance stop above the circumferential sealing region;  
         [0054]      FIG. 25 . is a close-up side view of the container without the barrier flap in place, showing the circumferential sealing region on the inner wall of the neck, also showing the resistance stop on the inner wall of the neck;  
         [0055]      FIG. 26 . is a close-up side view of the container showing the barrier flap in place, and in its slightly arced and “closed” position;  
         [0056]      FIG. 27 . is a close-up side view of the container showing the barrier flap in place, and in its substantially arced and “open” position;  
         [0057]      FIG. 28 . is a top view of the container&#39;s mouth and neck, showing the barrier flap attached in place, slightly arced and “closed”, also showing a safety guard, and the grooves of the barrier flap that facilitate arcing of the barrier flap;  
         [0058]      FIG. 29 . is a top view of the mouth and neck showing the neck being squeezed, while the barrier flap is still in the “closed” position, but has just overcome the resistance stop that will allow the barrier flap to move into the “open” position;  
         [0059]      FIG. 30 . is a top view of the mouth after the neck has been squeezed and the barrier flap has opened; and  
         [0060]      FIG. 31 . is a top view of the mouth of the container, showing the barrier flap substantially arced and in the “open” position, also showing the safety guard and the resistant stop.  
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0061]     With reference to  FIG. 1 , a front view of a typical bottle-like container  100  is shown with a base  102 , a neck  104 , a mouth  116 , and a body area  114 . This container  100  also includes optional threads  106  around the outer neck circumference of the container&#39;s body to aid in sealing the container closed with a cap or other device.  FIG. 1  also shows an indented opening  110  at the mouth of the container  100 . A circumferential sealing region  108  and a resistance stop  112  are also contained within the neck of the container.  
         [0062]      FIG. 2  is a side view of a typical bottle-like container  100 , showing the base  102 , the neck  104 , the mouth  116 , and the body area  114 . This container also shows, similar to  FIG. 1 , optional threads  106  around the outer neck circumference of the container&#39;s body and an indented opening  110  near the mouth  116  of the container.  FIG. 2  also includes a circumferential sealing region  108  and resistance stop  112  contained within the neck of the container.  
         [0063]      FIG. 3  is a front view showing an upright bottle-like container  100  showing hand placement  302  on the front body area  114  of the container. This body area  114  has a flexible wall and can be substantially squeezed to increase pressure within the container. A barrier flap  300  that has the ability to arc, and to hinge “open” and “closed” along its hinging region  304  is shown in its “closed” position within the neck  104  of the container. The natural unstressed state and inherent disposition of the barrier flap  300  is to be in the “open” position, such as shown in  FIG. 17 . But without substantial squeezing of the container, the barrier flap  300  is prevented from moving into the “open” position due to being blocked by the resistance stop  112 . The unnatural, stressed state of the barrier flap is to be in the “closed” position. In this “closed” position in  FIG. 3 , the barrier flap  300 , together with the circumferential sealing region  108  within the inner neck wall  104  of the container, forms a circumferential seal to prevent any fluid or gas from being exchanged between the outside and inside of the container. In  FIG. 3 , although the container  100  is being held upright with the hand, the containers body area is not yet being significantly squeezed.  
         [0064]      FIG. 4  shows an inverted bottle-like container  100  being held in the body area  114  by a hand  302 . The barrier flap  300  that can arc and hinge remains in the “closed” position, forming a circumferential seal around the inner circumference of the neck. Although the container  100  is being held inverted by the hand  302 , the body area  114  is not yet being significantly squeezed. With the barrier flap in the “closed” position and the circumferential seal engaged, any fluid or gas exchange between the inside and outside of the container is prevented.  
         [0065]      FIG. 5  shows an inverted container  100  that is being squeezed at the container&#39;s body area  114  by the hand  302 . While the container&#39;s body area  114  is being squeezed, internal container pressure significantly increases, exerting force on the barrier flap  300 . This internal pressure causes the barrier flap  300  to exert increased force against the resistance stop  112 . As the container continues to be squeezed, the internal container pressure continues to build until the pressure causes the barrier flap  300  to overcome the obstructive force of the resistance stop  112 . When the barrier flap  300  overcomes the obstructive force of the resistance stop, the barrier flap hinges to the “open” position. Simultaneously, the barrier flap&#39;s movement away from the circumferential sealing region  108  causes the circumferential seal to break and become disengaged. The barrier flap continues to move towards its “open” position about its hinging region  304  until it comes to rest along the inner neck wall  104 . After the container is inverted and once the circumferential seal is disengaged, gravitational forces along with internal container pressure causes fluid  500  from the container to flow out of the container&#39;s mouth  116 .  
         [0066]      FIG. 6  shows the front view of a container  100  in its upright position. This figure shows hand positioning to open the container&#39;s barrier flap  300  through a second “neck squeezing” method. The hand  302  depicted in the figure is placed on the neck region  104  of the container. The barrier flap  300  is in the “closed” position forming a circumferential seal along the inner circumference of the container&#39;s neck. The neck  104  of the container is semi-rigid yet flexible for squeezing. When the neck region has applied force squeezing it, the barrier flap  300  begins to substantially arc from the inward flexing of the neck wall. This squeezing pressure causes the barrier flap to arc and for the container&#39;s mouth to temporary change shape. From a top view, the mouth&#39;s shape changes shape temporarily, as shown in  FIG. 29 , allowing the barrier flap  300  to overcome the obstructive force from the resistance stop  112 . Once the barrier flap  300  overcomes the obstructive force from the resistance stop, it continues to hinge “open” about its hinging region  304  until the barrier flap  300  ultimately rests up against the inner neck wall, as shown in  FIG. 23 . As mentioned above, as the neck is squeezed, its circular shape (from a top view as shown in  FIG. 28 ), becomes elongated into a temporary oval shape causing the resistance stop  112  to move away from the barrier flap, such as in  FIG. 29 . When the resistance stop  112  moves away from the barrier flap due to the neck&#39;s new temporary shape, the resistance stop  112  reduces its obstructive force on the barrier flap  300  allowing it to hinge open, as shown in  FIG. 23 . When the barrier flap  300  hinges open by the “neck squeezing” method above, the circumferential seal between the outer edge of the barrier flap  300  and the inner circumferential sealing region  108  disengages. This allows the container&#39;s fluids  500  to gravitationally flow out when the container is inverted, such as shown in  FIG. 7 .  
         [0067]      FIG. 7  shows a hand inverting the container  100  after the barrier flap  300  has hinged into its “open” position, thereby allowing fluid to flow out. This second “neck squeezing” method allows greater flow control of the fluid because after the barrier flap has moved to its “open” position, the container can be inverted to any desired degree for a manually adjusted flow rate. Once inverted, the fluid begins to flow out due to gravitational forces.  
         [0068]      FIG. 8  shows a close-up side view of the barrier flap  300  in its un-arced and “open” position.  FIG. 8  shows a barrier flap  300  with a hinging region  304 . This is the natural unstressed state of the hinging region maintaining the barrier flap  300  in the “open” position, such as  FIG. 23 . The barrier flap flange  802  is where the container attachment  804  is located allowing the barrier flap  300  to be attached to the inner neck  104  of the container  100 . The optional grooves  800  on the barrier flap  300  allow it to arc inwardly so the barrier flap can rest along the inner curvature of neck wall when the barrier flap  300  is in the “open” position  FIG. 23 . Barrier flap arcing can be achieved with assistance of optional grooves  800  or with material(s) allowing the same arcing curvature.  
         [0069]      FIG. 8 . 5  is a close-up side view of a similar barrier flap  300  in its un-arced and “open” position. Instead of a one-piece barrier flap such as in  FIG. 8 , this figure shows optional multi-piece components, including a “spring-like” attachment  8500  that attaches to the barrier flap  300  at attachment point  8502  and also attaches to the container  100  at an attachment point  804 .  
         [0070]      FIG. 9  shows the other side view of the barrier flap  300  in its un-arced and “open” position. From this view, an optional protective covering  900  is shown. This protective covering  900  attaches to the barrier flap  300  and maintains the structural integrity of the barrier flap  300  together with its components. It ensures that the barrier flap  300  will remain as one piece in case of structural failure of any part of the container or of the barrier flap  300  itself. This is vital, since no piece of the barrier flap  300  or container interconnections should ever become dismembered before, during, or after application of either squeezing method of the container.  
         [0071]      FIG. 9 . 5  is similar to  FIG. 9  except instead of a barrier flap flange, the “spring like” attachment  8500  is attached to the barrier flap  300 . The “spring like” attachment attaches together to the barrier flap  300 , at attachment point  8502 , and the to the container  100  at attachment point  804 .  
         [0072]      FIG. 10  shows the front view of the barrier flap  300  in its un-arced and “open” position. From this view, the protective shield  900  from  FIG. 9  and  FIG. 9 . 5  is noticeable as a thin layer on one side of the barrier flap.  FIG. 10  also shows the hinging region  304  and container attachment points  804  on the barrier flap flange  802 .  
         [0073]      FIG. 10 . 5  also shows the front view of the barrier flap  300  in its un-arced and “open” position. It is very similar to  FIG. 10  except that it contains a “spring-like” attachment  8500  with a container attachment  804  and a barrier flap attachment  8502 .  
         [0074]      FIG. 11  shows the front view of the barrier flap  300  in its un-arced and “closed” position. It is similar to  FIG. 10  except that the barrier flap  300  is no longer in its natural unstressed “open” position but has been “closed” by rotating about the hinging region  304 . In the container&#39;s “closed” position, the barrier flap  300  can remain in this un-arced position, or in a slightly arced position as shown in  FIG. 12 . The barrier flap&#39;s inherent disposition is to hinge “open” from this “closed” position about its hinging region  304 . The barrier flap  300  in  FIG. 11  remains un-arced but becomes slightly arced in  FIG. 12 .  
         [0075]      FIG. 11 . 5  also shows the front view of the barrier flap  300  in its un-arced and “closed” position. It is similar to  FIG. 10 . 5  except that the barrier flap  300  is no longer in its natural unstressed position but has been hinged “closed” using the hinge  304 . The barrier flap  300  is shown un-arced in  FIG. 11 . 5  but can also be slightly arced as shown in  FIG. 12 . 5 .  
         [0076]      FIG. 12  shows the front view of the barrier flap  300  in its slightly arced and hinged “closed” position. It is similar to  FIG. 11  in that the barrier flap  300  is hinged “closed” about the hinging region  304 , but now the barrier flap  300  is slightly arced. The barrier flap  300  has a barrier flap flange  802  that attaches to a container  100 . This is the configuration of the barrier flap  300  when it is attached inside of the container in its “closed” position. Or as mentioned previously, in the “closed” position, the barrier flap  300  can be in a slightly arced or in an un-arched position, as shown in  FIG. 11 . A slight arc of the barrier flap  300  is preferred, as it helps assist the flap  300  to arc convexly when it hinges open and rests against the inner neck wall when finally in the “open” position.  
         [0077]      FIG. 12 . 5  also shows the front view of the barrier flap  300  in its slightly arced and “closed” position. It is similar to  FIG. 11 . 5  in that the barrier flap  300  is hinged “closed” at its hinge  304 , but now the barrier flap  300  is arced. Unlike  FIG. 12  where there is a barrier flap flange  802  that attaches to a container  100 ,  FIG. 12 . 5  has a “spring-like” hinge attachment  304  that attaches to the barrier flap  300  and to a container  100 .  
         [0078]      FIG. 13  shows the top view of the barrier flap  300  in its un-arced and “open” position. From this view, the optional grooves  800  in the barrier flap  300  are noticeable. The grooves can be situated on either side or both of the barrier flap  300  which assist in arcing of the barrier flap  300 . Also noticeable is the protective covering  900  on one side of the barrier flap  300 .  
         [0079]      FIG. 14  shows the top view of the barrier flap  300  in its significantly arced and “open” position. It is a similar view as shown in  FIG. 13 , except the barrier flap  300  is now arced, which can be achieved with optional grooves  800 , or with material(s) that allow and facilitate the barrier flap  300  to form a similar arced position. This is the position the barrier flap  300  will remain in once inside the container&#39;s neck when it hinges to its “open” position.  
         [0080]      FIG. 15  shows the side view of the barrier flap  300  in its slightly arced and “closed” position. Again in the “closed” position, the barrier flap  300  can be slightly arced or un-arced, although a slight arc is preferred to assist in arcing of the flap  300  when hinging open. This is the position the barrier flap  300  will be positioned in once inside of the container in the “closed” position. This figure shows the use of the “spring-like” attachment  304 , rather than the barrier flap flange  802 . Either option is interchangeable when attaching the barrier flap  300  to the container  100 . Of course, any functional equivalent, providing a hinging or pivoting action, would be effective also.  
         [0081]      FIG. 16  shows the front view of a container  100  with the barrier flap  300  attached to the container in the “closed” position. Attached together, the components form a valve that controls the flow of fluid from the container  100 . The barrier flap  300  is in the slightly arced and hinged “closed” position. In this position, the barrier flap is engaged in a circumferential seal along the circumferential sealing region  108 . Also in this position, no fluid or gas exchange can occur between the inside and outside of the container  100 .  
         [0082]      FIG. 17  shows the front view of a container  100  with the barrier flap  300  attached to the container  100  in the “open” position. The barrier flap  300  is in the substantially arced and hinged “open” position. In this position, the barrier flap  300  has become disengaged from the circumferential seal along the circumferential sealing region  108 . Also in this position, fluid and gas can be exchanged between the inside and outside of the container  100 .  
         [0083]      FIG. 18  shows the side view of a container  100  with the barrier flap  300  attached to the container  100  in the “closed” position. The barrier flap  300  is in the slightly arced and hinged “closed” position. In this position, the barrier flap  300  is engaged in a circumferential seal along the circumferential sealing region  108 . In this position, no fluid or gas exchange can occur between the inside and outside of the container.  
         [0084]      FIG. 19  shows the side view of a container  100  with the barrier flap  300  attached to the container by the container attachment  804  and the barrier flap  300  is in the “open” position. The barrier flap  300  is in the substantially arced and “open” position. In this position, the barrier flap  300  is now disengaged from the circumferential seal along the circumferential sealing region  108 , thereby allowing fluid and gas exchange between the inside and outside of the container.  
         [0085]      FIG. 20  shows a close up front view of the container  100 . From this view, the indented opening  110  is seen. This indented opening  110  prevents the barrier flap  300  from exiting from the neck of the container in case the barrier flap  300  accidentally becomes detached from the container  100 . Also noticeable from this view are the optional threads  106  which provide assistance when using a container cap with the container  100 . The resistance stop  112  is also shown. This resistance stop  112  ensure that the barrier flap  300  stays in place when in the “closed” position, in the absence of any substantial applied squeezing force to the neck or body of the container  100 . Also, a cross-sectional view of the circumferential sealing region  108  is shown. This circumferential sealing region runs along the inner perimeter of the neck  104 , as seen in  FIG. 21 .  
         [0086]      FIG. 21  is a close up front view of the container  100 . This view is similar to  FIG. 20 , except it shows a full frontal view of the circumferential sealing region  108  and how it extends around the inner circumference of the container&#39;s neck  104 . When in engaged relationship with the barrier flap  300  as in  FIG. 22 , together the barrier flap  300  and the circumferential sealing region  108  form a circumferential seal.  
         [0087]      FIG. 22  is a close up front view of the container. This view is similar to  FIG. 21  except it includes the barrier flap  300  and “spring-like” hinged attachment  804  attached to the container  100 . The barrier flap  300  is slightly arced and in the “closed” position. Together with the circumferential sealing region  108 , they form a circumferential seal preventing the exchange of fluid or gas between the inside and outside of the container  100 . While the barrier flap  300  is in the “closed” position, the resistance stop  112  is applying pressure against the barrier flap  300 , thereby preventing it from moving into the “open” position. The barrier flap  300  must overcome the pressure applied by the resistance stop to pivot into the barrier flap&#39;s “open” position. Once the barrier flap  300  overcomes the pressure applied by the resistance stop  112  and begins moving away from the circumferential sealing region  108 , such as shown in  FIG. 23 , the circumferential seal becomes disengaged, allowing fluid and gas exchange between the inside and outside of the container  100 .  
         [0088]      FIG. 23  is a close up front view of the container. This view shows how the barrier flap  300  has moved from the “closed” position  FIG. 22 , to the “open” position  FIG. 23 . As it can be seen, the barrier flap  300  has overcome the force of the resistance stop  112  and has continued to move towards its “open” position against the inner neck wall  104  of the container  100 . Since the barrier flap  300  has moved away from circumferential sealing region  108 , the circumferential seal has been disengaged, thereby allowing the exchange of fluid and gas between the inside and outside of the container  100 .  
         [0089]      FIG. 24  is a close up side view of the container  100 .  FIG. 24  is similar to  FIG. 20 , except  FIG. 20  is a front view of the container  100 , and  FIG. 24  is the side view of the container  100 . Both views show the cross-sectional view of the circumferential sealing region  108 .  FIG. 25  shows a side view of the resistance stop  112 , and its placement above the circumferential sealing region  108 .  
         [0090]      FIG. 25  is a close up side view of the container  100 .  FIG. 25  is similar to  FIG. 21 , except  FIG. 21  is the front view of the container  100 , and  FIG. 25  is the side view of the container  100 . Both views show a full view of the circumferential sealing region  108 .  
         [0091]      FIG. 26  is a close up side view of the container  100 .  FIG. 26  is similar to  FIG. 22  except  FIG. 22  is a front view of the container  100 , and  FIG. 26  is a side view of the container  100 . Both views show the barrier flap  300  attached to the container  100  in the slightly arced and hinged “closed” position. In  FIG. 26 , the barrier flap  300  together with the circumferential sealing region  108 , form a circumferential protective seal around the inner circumference of the container&#39;s neck  104 .  FIG. 26  shows the relative positioning of the barrier flap  300  and the resistance stop  112 . While the barrier flap  300  is in the “closed” position, the resistance stop  112  applies obstructive force against the barrier flap  300  to ensure that it remains in the “closed” position.  
         [0092]      FIG. 27  is a close up side view of the container  100 . In  FIG. 27  the barrier flap  300  has moved beyond the resistance stop  112 , and has continued on towards the “open” position, with the barrier flap  300  resting along the inner neck  104  wall of the container  100 . This view is similar to  FIG. 23 , except that  FIG. 23  is a front view, and  FIG. 27  is a side view of the barrier flap  300  in the “open” position. In this “open” position, fluid and gas are able to be exchanged from the inside and outside of the container.  
         [0093]      FIG. 28  is a close up top view of the container&#39;s mouth  116 . From this view, a guard  2800  can be seen inside the container&#39;s mouth  116 . The guard&#39;s purpose, similar to the indented opening  110 , is to prevent the barrier flap  300  from exiting the mouth of the container in case the barrier flap  300  accidentally becomes detached from the container  100 . Also, from the view in  FIG. 28 , the barrier flap  300  is shown in its arced and “closed” position, not allowing any exchange of fluid or gas between the inside and outside of the container  100 .  
         [0094]      FIG. 29  is a close up top view of the container&#39;s mouth  116  being squeezed by a hand  304  at the container&#39;s neck  104  with the barrier flap  300  in the “closed” position. As the neck&#39;s wall is being squeezed, the shape of the neck  104  is becoming elongated, causing the resistance stop  112  to move away from the barrier flap  300 . As the resistance stop  112  moves away from the barrier flap  300 , the obstructive force applied by the resistance stop  112  is removed from the barrier flap  300 , thereby allowing the barrier flap  300  to avoid the resistance to movement provided by the resistance stop  112 . Once the resistance stop  112  releases the barrier flap  300 , the barrier flap  300  is able to freely pivot from its “closed” stressed position, towards its “open” unstressed position about the hinge  804 , until the barrier flap  300  comes to rest at the neck wall  104 , such as shown in  FIG. 30 . Also, while the neck  104  is squeezed with the hand  302 , pressure is being applied to the barrier flap  300  by the neck wall  104 . The grooves  800  enable the barrier flap  300  to significantly arc, thereby allowing the barrier flap  300  to conform to the new temporary elongated oval neck shape. If the resistance stop  112  does not fully move away from the barrier flap  300  during squeezing of the neck  104 , the significantly arced barrier flap shape applies further pressure on the resistance stop  112  to as to overcome the obstructive force from the resistance stop  112 , thereby enabling the barrier flap  300  to move to the “open” position.  
         [0095]      FIG. 30  is a close up top view of the container&#39;s mouth  116  being squeezed by a hand  304  at the container&#39;s neck  104  with the barrier flap  300  moving towards the “open” position. From this view, the temporary oval neck shape can be seen which has resulted from the squeezing pressure on the neck&#39;s wall.  
         [0096]      FIG. 31  is a close up top view of the container&#39;s mouth  116  after the neck  104  has been squeezed and after the barrier flap  300  has moved into the “open” position. After the hand  302  has released the applied pressure on the container&#39;s neck  104 , the neck shape regains its original circular shape. The resistance stop  112  returns back to its original position, but the barrier flap  300  remains in its new significantly arced, “open” position. In this position of the barrier flap  300 , fluid and gas can be exchanged between the inside and outside of the container.  
         [0000]     How the Pressure Pop™ Bottle Works  
         [0097]     Method 1—“Body Squeeze”: After the containers cap or seal is removed, the container  100  is placed in an inverted position over the pouring target, such as an engine crank-case oil opening, and is then squeezed, allowing the release of the fluid, such as oil. Since the barrier flap  300  within the containers neck  104  opens only when the container is squeezed, the user has control over the timing of the release of the fluid into the pouring target. With this method, the squeezing action, flap opening, and fluid flow out of the container occur simultaneously. After use, the user does not need to come in contact with any fluid from the container  100 , but must merely dispose of the container  100 , or reapply the containers cap for later reuse of the container  100 .  
         [0098]     Method 2—“Neck Squeeze”: After the seal or cap is removed, the container  100  is placed in an upright position near the pouring target. The user can then squeeze the neck  104  of the bottle  100 , thereby urging the flap  300  within the neck  104  of the container  100  to open. Then the container  100  can be positioned as needed so as to pour the fluid therefrom. A typical use for this method is when a user would like to slowly pour, or pour limited quantities of, the container&#39;s contents, such as oil, into an easy-to-reach and easy-to-pour location, such as a lawnmower engine, or a snow blower engine. This method also allows the fluid in the container  100  to pour out in accordance with a tilt of the container  100 , rather than upon pressure-induced release of the barrier flap  300 .  
         [0099]     Other modifications and implementations will occur to those skilled in the art without departing from the spirit and the scope of the invention as claimed. Accordingly, the above description is not intended to limit the invention except as indicated in the following claims.