Precision measurement dispenser

A precision measurement dispenser provides for storage of a granular bulk material in a storage container that is preferably airtight. The granular material is held in a storage container which feeds a dispensing section that is preferably positioned within the storage container. The dispensing section selectively dispenses the ingredient by gravity to a weighting tray of a scale. The ingredient is dispensed by weight. The storage dispensing unit may also include a display and keypad for entry of a desired quantity of ingredient to be dispensed, and optionally which of plural ingredients to be dispensed. A controller can convert a requested volumetric measure to an equivalent weight measure, and dispense by weight in place of volume. The storage dispensing unit further optionally includes pressure control, temperature control, and/or humidity control on the storage container. The dispensing section uses screw, roll, vibration, or shuttle mechanisms for precise dispensing of material.

BACKGROUND

The present disclosure relates to the field of food preparation, and more particularly to an apparatus for the bulk storage and precision metered dispensing of granular food ingredients.

Food preparation often involves using basic ingredients that are in granular form, e.g., flour of various types and origins, sugar of various types and origins, baking soda, baking powder, ground spices, powdered seasonings, or the like. Traditionally, granular ingredients are measured by volume, and many or even most recipes are written accordingly.

However, it is known that measuring recipe ingredients by volume has drawbacks. For example, the ingredients may settle during storage, or may be loaded differently into the measuring vessels be different individuals, and accordingly the density will change. Therefore, equal volumes of an ingredient may have different weights, affecting the precision of the preparation.

SUMMARY

It is an object of the present disclosure to overcome these and other deficiencies in the known art. Therefore, the present disclosure provides a storage dispensing unit for storage of a granular bulk material in a standard or airtight (hermetic) storage container. The granular material is held in a storage container which feeds an included dispensing section. The dispensing section selectively dispenses the ingredient downward to a base, which optionally includes a weighting tray or a scale. The ingredient is dispensed by weight. The storage dispensing unit also may include a display and a keypad for entry of a desired quantity of ingredient to be dispensed, and optionally which of plural ingredients to be dispensed. A controller can convert a requested volumetric measure to an equivalent weight measure, and dispense by weight in place of volume. The storage dispensing unit further optionally includes pressure control on the storage container, i.e., vacuum, and maintains an airtight or hermetic seal when not actively dispensing. Optionally, temperature and/or humidity may also be controlled to enhance the shelf life of various stored ingredients. The dispensing unit may be used for storing ingredients or as a precise dispensing apparatus, wherein ingredients are only temporarily stored for the purpose of dispensing a precise amount of the ingredient.

DETAILED DESCRIPTION

Provided according to the present disclosure is a storage dispenser unit, generally10, for a bulk granular product. We refer herein to flour as the exemplary ingredient merely as convenience, however it will be appreciated by those skilled in the art that the present disclosure is applicable to any other granular or similar substance used in recipes, including but not limited to sugar, brown sugar, sweeteners (e.g., sugar substitutes), salt, starch (e.g., corn starch, potato starch, etc.), cocoa powder, carob powder, egg powder (e.g., egg white, yolk, and whole egg powders), maltodextrin, sweet dairy whey, tapioca, gelatin, textured vegetable protein (TVP), spices and other seasonings, rice, oats, beans, grains, couscous, dried pastas, dried fruit, dried vegetables, nuts, chips (e.g., chocolate chips, butterscotch chips, etc.), baking powder, baking soda, cream of tartar, bread crumbs, batter mixes, powdered milk, pudding mixes, dry yeast, dry cereal, candy, and seeds (e.g., sesame seeds, alfalfa seeds, chia seeds, flax seeds, etc.).

Storage dispenser unit10includes a base12at its bottom, and a stand14rising from the base12. The stand14supports a canister16above the base12. In a further embodiment the stand14may be collapsible to reduce the height of the storage dispenser unit10when it is not in use. Alternately or additionally the canister16and/or the stand14may be detachable from the stand14and/or the base12, respectively, also to facilitate storage.

The canister16includes a storage compartment18, sealed by cover20. The seal of cover20is preferably airtight or hermetic, yet releasable. Optionally a translucent or transparent window22is provided in the storage compartment18to permit visual determination of the contents of the storage compartment18, i.e., their type and/or quantity. Alternately or additionally the storage compartment itself is transparent or translucent to permit the visual identification. The storage compartment18may also be formed of any suitable material (plastic, ceramic, metal, wood, etc.) and include colors, designs, graduated markings, and labels (including frames or other means for holding labels, such as stick-on and magnetic, as well as label areas formed of dry-erase or chalkboard for hand labeling). The storage compartments18may vary in size and/or shape, and differing properties of the storage compartments18may aid in distinguishing the materials within them.

Beneath the storage compartment18is a dispensing section24. The dispensing section receives the stored bulk goods from the storage compartment18above and selectively dispenses them below in the direction of the base12. Provided on the dispensing section24are a display26, and keypad28, although either or both may be located elsewhere on the storage dispenser unit10, or even remote from it. A power cord34connects with an external electric source to provide power as necessary to the storage dispenser unit10. Alternately or additionally, electric power as needed would be sourced from internal batteries, solar panels or other available means.

Flour is commonly sold in retail quantities of 5 lbs. Therefore in one embodiment, storage compartment18is preferably sized to accommodate approximately 5 lbs. (2286 g) of flour, or at a common equivalent volume of 0.826 lbs. per 3 cups for all-purpose flour, approximately 18.2 cups (262.2 cubic inches; 4.296 liters). Additional space may be provided as a matter of convenience. Other sizes may be chosen as desired, or derived for contents other than flour, or for other applications. For industrial applications, larger storage compartments18capable of handling higher quantities of granular material may be desirable.

The base12includes a surface that can support a vessel32to receive the dispensed material. In one embodiment, the base includes a scale (not shown) having a weighing tray30. For the embodiment described above adapted to store and dispense 5 lbs. of flour, the scale preferably has a resolution of one-eighth (0.125) oz. (1 g), preferably smaller than the smallest amount to be dispensed, and a maximum capacity of 4 lbs. (1.8 kg), preferably larger than the largest amount to be dispensed. The weight on the weighing tray may be displayed on the display26. Optionally, the displayed weight can be converted between English and metric units. The weighing tray30is preferably removable, for example for cleaning, and preferably is constructed of stainless steel. For applications involving larger quantities of material, the scale resolution may be modified, but should still have a resolution smaller than the smallest amount to be dispensed, and a maximum capacity preferably larger than the largest amount to be dispensed.

The storage dispenser unit also includes a controller (not shown) which receives data input via the keypad or another means, receives data from the scale. The controller directs the operation of the dispensing section24and/or the display26. In a common mode of operation, the user would place a vessel32on the weighing tray30beneath the dispensing section24. The scale may measure the weight of the vessel32before dispensing as the tare. Tare may also be manually set by the user depressing button36with the vessel32in place on the weighing tray30. Tare button is36positioned in the exemplary embodiment on the base12, but may also be located elsewhere on the storage dispenser unit10, or remote from it.

Using the keypad28, the user would enter a quantity and units to be dispensed, and in some embodiments, the type of ingredient to be dispensed. Moreover, the controller can accept a desired quantity given in commonly used volumetric units, and by use of a stored conversion factor, lookup table, or similar tool, convert to weight measure and dispense according to an equivalent weight. The keypad optionally has dedicated confirmation means, for example a single-purpose ‘dispense’ button, or a multi-purpose button to be depressed at an appropriate time, to confirm that dispensing is to begin, in order to avoid inadvertent dispensing without and appropriate vessel32in place to receive the ingredient. It will be noted that the particular other of steps described above may be altered without departing from the scope of the present disclosure.

Having received a desired quantity (and optionally type) of ingredient, the controller activates the dispensing section24to release the desired quantity. The controller receives feedback via the weighting tray30of the scale as to the weight of ingredient dispensed. The rate of dispensing can be controlled to prevent over-dispensing the selected ingredient due to feedback delays at the scale, controller, and/or dispensing section24. The controller further optionally includes storage to store certain present quantities of one of more ingredients, i.e., recipes, which can be recalled through the keypad28and dispensed in a consolidated operation.

In another embodiment, the function of weighing the ingredient for dispensing the selected quantity is accomplished internally to the dispensing section24. In this embodiment the dispensing section24weighs certain quantity of the ingredient internally, and dispenses the weighed amount below itself. In this embodiment, the scale to confirm the accuracy of the quantity dispensed is internal to the dispensing section24, and the weighing occurs before the ingredient is released from the dispensing section24. In this embodiment, the scale and weighing tray30may be provided as well, for the convenience of the user. Additionally, they may be incorporated into the dispensing process as a verification of the dispensed quantity.

As noted above, cover20preferably maintains an airtight seal of the storage compartment18, to preserve the freshness of the food ingredient stored therein. Optionally, once sealed, a vacuum may be applied to the storage compartment, for example by an internal or externally-connected vacuum pump (not shown) to help maintain the freshness of the stored ingredient. More preferably, the storage dispenser unit10may include temperature control, e.g., heating or cooling elements, to avoid extremes of temperature to further promote and maintain the freshness of the stored food ingredient. In certain embodiments, the cover20may also include elements to control humidity within the storage compartment18. For example, a compartment or other means for providing a desiccant or humectant material to the cover20may be used to reduce or increase humidity within the storage compartment18.

Flour has been described herein as an exemplary ingredient, but the foregoing apparatus is applicable for the storage and dispensing of virtually any granular or fluid substance. Among food preparation ingredients, the present apparatus is useful for storage and dispensing of flour, sugar, baking powder, baking soda, oats, rice, peas, and nuts, just to name a few. Moreover, there are additionally applications outside the kitchen where the precise dispensing of bulk material, preferably by weight, would be desirable.

In particular, an embodiment is contemplated wherein a plurality of ingredients are stored and selectively dispensed. This is particularly applicable to spices and flavorings, or other ingredients that are typically used in smaller quantities than flour, sugar, or the like. Accordingly, the size of storage necessary for convenient and usage of such small-quantity ingredients is reduced. Plural ingredients may be stored separately in a single unit that is not excessive in size. The user may select the ingredient to be dispensed along with the quantity via keypad28. Stored recipes consisting of several ingredients may be included or user-input for added convenience as well. The measures to enhance shelf-life discussed above are equally applicable to the plural-ingredient embodiment.

In a further embodiment of the present disclosure, a precision measurement dispenser (PMD) is a precision measuring converter and output device for dry goods such as flours and grains or other granular substances. One of its primary purposes is to eliminate the need for measuring cups or guesswork between units of measurement. The PMD uses the same amount of counter space (e.g., footprint) as a standard canister, may have an added feature of adjustable height to collapse into the same overall space as a conventional canister of similar volume. Is also may extend vertically to accommodate bowls or containers of various sizes.

An internal scale converts cups to grams, in addition to other conversions. A digital display shows introduced and converted amounts; interchangeable canisters can be reserved and stored according to their contents. An internal processor may display the contents of each interchangeable canister, aiding in proper dispensing and conversion. A vacuum seal on the canister may allow for long-term storage.

An air-sealed chamber dispenses directly into a bowl or vessel of choice. The PMD can be used to measure and store various types of materials such as flours or grains. The PMD may be battery, solar or cord-powered.

An upper part comprises an interchangeable storage/input container which slides vertically and is held in place with a ratcheting mechanism; Hinged feed-door in top; Window gauge or optionally a transparent or translucent canister; LCD readout; Control buttons or touch screen controls for conversion of cups-to-gram, ounces-to-grams, pounds-to-grams, grams-to-ounces, gram-to-pounds, and other calculations including internal calculations executed to convert a requested volumetric quantity of material to a corresponding weight; Processor and scale inside upper housing which surrounds the storage/input container; Cylinder with airlock and feed-screw; Supporting middle section; Output base with optional separable output vessel. SeeFIG. 3

In the function of this further embodiment, a bowl or other container is placed on the PMD's output base. The PMD may be adjusted to the height of the output container. Flour or other dry granular substance is either previously-stored or poured into top of the container. If previously-stored, the container may be separable and attached to the PMD at the time of use. Using the control buttons or touch screen controls, the user enters the amount desired and the output measurement desired. The processor may calculate the output and a LCD readout shows the exact amount to be dispensed, in the target measurement, and dispenses the amount into the bowl in the output base.

The user pours the substance to be measured into the input container (FIG. 4). Using the control buttons or touch screen controls on the container cylinder (FIG. 5), the user enters the desired output amounts (for example, 1 cup). The calculator inside the unit's upper part (not pictured—internal) computes the output in the desired measurement and displays that in the LCD readout (FIG. 6). At that point the door of the inner airlock chamber (FIG. 7) opens to receive the granular substance and the feed screw (FIG. 8) of a screw feed apparatus turns to fill the cylinder.

The airlock chamber rotates so that the door faces downward and the first part of the substance is delivered. The airlock chamber rotates to receive more of the granular substance (if necessary), and the feed screw continues in the other direction, pushing more of the substance into the cylinder (FIG. 8). The airlock chamber rotates again, repeating the process while the feed screw continues moving in alternate directions to quickly fill the airlock chamber. Thus the airlock chamber works fluidly with the feed screw to alternately receive and expel the substance until the desired amount is finally deposited. This cycle repeats until desired weight is subtracted from the storage container. The feed screw may be capable of measuring out accurate measurements down to the desired precision, such as 0.125 oz.

The remaining granular substance in the container can then be further meted out, or it can be stored, optionally after re-establishment of a vacuum seal within the storage container. An internal switchboard gives the user ability to assign each storage/input container to a particular ingredient. The storage/input container slides on and off the unit vertically and can be interchanged with other containers for ease of cleaning and measuring of differing materials.

In the present embodiment, the following material selections are contemplated, though others may be used. The upper part with an interchangeable input container—ABS plastic. Hinged feed-door—transparent polycarbonate. Window gauge—transparent polycarbonate. LCD readout—per component supplier/manufacturer; Control buttons—ABS plastic; Processor and scale—per component supplier/manufacturer; Cylinder with airlock—transparent polycarbonate; Feed-screw—transparent polycarbonate, however some ingredients may require stainless steel; Supporting middle section—ABS plastic; Output base—ABS plastic. If the control buttons are replaced with a touch screen, the materials for the touch screen include both plastic and glass, as well as combinations.

With the shape and size of this particular product, injection molding would be the choice of manufacturing. Injection molding is the most commonly practiced plastic processing method in the plastics industry. This process can produce all different shapes and sizes of plastic products, and can produce the most complex of plastic parts. Injection molding uses force to push plastic into a cold steel mold to form the part being produced.

In order to reduce the manufacturing and retail price of the product, it is possible to construct a simpler interchangeable storage/input container without parts such as scale, processor, temperature control, and/or readout. Reserving these parts for only the non-interchangeable base unit may reduce retail costs for units with multiple storage containers. The storage containers may be configured to retain the optional vacuum seal upon removal from the PMD. This would result in a base unit with incorporated scale, motor, processor and LCD readout (and optional temperature control and vacuum pump). The base unit and processor may receive information as to the contents of a particular container from the interchangeable container, and the processor may direct the dispensing section accordingly.

Humidity control is contemplated for the present PMD, notwithstanding the implied cost of an associated compressor and refrigeration unit for condensing and removing humidity. As an alternative cooling unit a heat pipe may be employed, similar to those used in computer-processor cooling, notwithstanding the cost. Humidity control may also be achieved by use of desiccants and humectants (such as in a container cover).

A significant improvement over prior art devices may be realized by incorporating the dispensing section24into the storage container18. Such an embodiment may eliminate cross-contamination since the parts that touch the material will stay with the container at all times. Power for the mechanism may be provided by the storage dispensing unit base through mechanical couplings, electrical connections, or the like. The embodiment ofFIGS. 1-8, as well as further embodiments described herein may thus be configured with the dispensing section mechanism integrated or otherwise included into the storage compartment18.

FIG. 9Aschematically illustrates an embodiment wherein a single base unit interacts with multiple storage compartments18that each include a dispensing section mechanism24. In this embodiment, a stationary base unit comprises base12, a scale section or weighing tray30, and a motor unit120. The vessel or bowl32is placed on the weighing tray30and the scale zeroed upon determination of the tare (not illustrated). Multiple storage compartments18are mounted for movement via a rail or rotating element90. The movement may be manual or controlled by a processor or controller (not shown) of the base unit so that material can be dispensed from the various storage compartments18. When a storage compartment18is positioned to interact with the base unit, the dispensing section mechanism24interfaces with a drive unit or motor120in order to dispense material under the control of the base unit. While illustrated as having a particular number of uniform sized storage containers18, any number and configuration of storage containers18may be employed.

FIG. 9Bschematically illustrates another embodiment wherein a single base unit interacts with multiple storage compartments18that each include a dispensing section mechanism24. In this embodiment, a movable base unit comprises base12, a scale section or weighing tray30, and a motor unit120that are mounted on a translational means such as a rail91. The vessel or bowl32is placed on the weighing tray30and the scale zeroed upon determination of the tare (not illustrated). Multiple storage compartments18are positioned in a fixed manner relative to one another and the base unit is moved in order to interact with the various storage compartments18. The movement may be manual or controlled by a processor or controller (not shown) of the base unit so that material can be dispensed from the various storage compartments18. When the base unit is positioned to interact with a storage compartment18, the drive unit or motor120interfaces with dispensing section mechanism24in order to dispense material under the control of the base unit. While illustrated as having a particular number of uniform sized storage containers18, any number, size, and configuration of storage containers18may be employed.

Optionally, each of the plurality of storage containers may include an identifier95and the base unit may comprise a reader96so that it may determine the material stored in the storage container18. Identifiers95may be located on the container or a cover of the container. Identifiers95may include radio frequency identification (RFID) tags, bar codes, QR codes, etc. with reader96being an appropriate reading mechanism. Other mechanisms, such as near field communication (NFC) and Bluetooth low energy (BLE) can also be used to provide identification, as well as quantity or other sensed variables via a built-in sensor (not shown). The controller may have the identifiers95pre-programmed, or may include a training procedure for input of the identifier95along with an association with a particular material. In this manner, recipes can be automatically dispensed from the various storage containers18under the control of the base unit.

Another embodiment of a dispensing section mechanism24included on a storage container18is illustrated inFIG. 10. The feed screw ofFIG. 8is replaced with a substantially cylindrical roller or shaft100of a roller feed mechanism. Storage compartment18is mounted above shaft100, allowing the stored granular material to be introduced to the top surface of the shaft100. A motor or other drive unit turns shaft100clockwise in the embodiment, which draws the material against metering wall110and then ejects the material below based upon gravity. Shaft100or metering wall110may be moved relative to each other or relative to storage compartment18to regulate the flow of material. Additionally, shaft100may be moved up against the bottom of storage compartment18when not in use, sealing storage compartment18. While the storage container18may take various shapes, it is preferable to have angled walls near the outlet in order to improve gravity flow of the material.

FIG. 11is a perspective view of the embodiment ofFIG. 10. A motor120(or other drive unit) may be placed in a convenient position to turn shaft100. The motor120may be part of the storage compartment18or part of the base unit. The surface of shaft100may be smooth, coated with a soft rubber-like material, or textured to best suit the material being dispensed. For example, the surface of shaft100may be knurled metal.

It is also possible to dispense granular or powder materials using a vibration feed apparatus. An alternative embodiment of the dispensing section mechanism24is illustrated inFIG. 12. Storage compartment18is mounted above a chute200with an outlet (not illustrated) feeding material to the chute200. Vibrator220is attached to chute200via flexural elements210, which transmit or focus the direction of vibratory motion in a desired direction. Thus, chute200is energized into vibratory motion as illustrated by the arrows inFIG. 12. The vibratory motion of chute200transports and ejects granular material at a precise rate that may be calibrated. It is also possible to vary the flow based on the position of the chute. For example, the position or angle of chute200may be adjusted relative to storage compartment18in order to adjust the flow rate of material. In this embodiment, the vibratory action may also provide an advantage by agitating and homogenizing the material to reduce blockages or interruptions in flow, such as by breaking clumps or agglomerations.

FIG. 13illustrates a cross-section of the vibratory feed apparatus in accordance with the embodiment ofFIG. 12. In order to seal storage compartment18when not in use, a door230may be provided which opens when storage compartment18is placed upon the dispenser unit or brought into relation with the base unit. Thus material can be introduced by gravity into chute200and subsequently transported by the described vibratory motion. While a hinged door230is illustrated, this is not meant as a limitation and other means of sealing storage compartment18are certainly feasible, such as soft plugs or membranes, sliding doors, or other devices known in the art.

The dispensing section mechanisms24described inFIGS. 1-13are preferably integrated into corresponding storage containers18to avoid cross-contamination problems. Moreover, the dispensing section mechanisms24described inFIGS. 1-13should preferably be able to transport significant quantities of material quickly, yet be able to deliver precise amounts of material, typically down to approximately 1 gram (0.125 oz). This may be a conflicting requirement with the precision desired by the dispensing mechanisms described, since they rely upon mechanical transport of material at an assumed or calibrated rate. No means of measuring the material is provided during actual transport, so inconsistency, gaps, or clumps of material may adversely impact delivery accuracy.

In addition, as mentioned above, it is desirable to minimize cross-contamination of ingredients when placing new storage compartments18onto the storage dispenser unit. In general, the dispensing section mechanisms ofFIGS. 1-13will retain some material inside the mechanism after dispensing. This material will remain in an un-sealed environment and is subject to spoiling or contamination. Un-dispensed material can leak or drop out the bottom from the dispensing section when the container is stored. Thus, it is preferable to provide some means to evacuate the mechanism of this excess material. A waste compartment (not illustrated) may optionally be provided in the storage dispenser mechanism, where the dispensing section mechanism is run while closed off from storage compartment18but open to the waste compartment. Thus excess material may be deposited in the waste compartment. Means, such as vibration or compressed air, may also be provided to increase the efficacy of this cleaning operation. Further, it may also be possible to reverse the dispensing mechanism and feed excess material back into storage container18.

Alternatively, a dispensing section mechanism may be provided which minimizes leftover waste material while simplifying sealing of storage container18by employing a shuttle feed mechanism that moves or “shuttles” precise amounts of material to a dispensing port. This alternate embodiment may effectively address the problem of fast delivery with precise measurement, since an efficient means of measuring the material is provided during transport. However, since the shuttle feed relies upon material volume instead of weight, a first volume of material may be selected based upon an estimated weight of the material, the weight calibrated upon the first amount of shuttle-fed material, and subsequent volumes shuttle-fed to obtain the desired weight of material. Alternately, shuttle-fed amounts may be delivered initially based upon volume, with measured weight being used to adjust the final delivery of material. Further, while a rotary-type shuttle feed apparatus is disclosed herein, embodiments may also employ a linear-type shuttle feed apparatus or other known shuttle feed mechanisms (not shown).

Referring toFIG. 14andFIG. 15, material dispensing is accomplished via a rotary shuttle feed apparatus using a disk300mounted in the bottom of storage compartment18. Disk300is rotated via coupler320(illustrated as a toothed gear, although not limited thereto), driven by a motor in or associated with the base of the storage dispenser unit. Thus disk300and coupler320stay with storage container18. Disk300contains two pockets301and302. In the preferred embodiment, pockets301and302are different sizes. An agitator310is attached to disk300and rotates with it.

Referring toFIG. 15, a dispensing port185is provided in the bottom of storage container18. In the neutral or storage position of disk300, dispensing port185is blocked by not being in registration with any pockets, effectively sealing storage container18. In this position pockets301and302are open to the stored granular material, but not open to dispensing port185. A top view of wheel300in the neutral position is shown inFIG. 16. Now referring toFIG. 14, pocket302is significantly larger than pocket301, so a different amount of material fills each pocket while wheel300is in the neutral position. If the controller of the storage dispensing device commands a large amount of material, the motor rotates wheel300clockwise (viewed from above inFIG. 14) via coupler320. Wheel300will rotate clockwise until pocket302aligns with dispensing port185, allowing the material to be dispensed by gravity. A wall180is provided inside storage container18, which serves to skim off any excess material in pocket302and define a specific volume. Thus a consistent approximate amount of material is dispensed each time wheel300rotates clockwise to the dispense position. The precise weighing function of the storage dispensing device controller is thus better able to control the dispensing process.FIG. 17is a top view showing pocket302rotated clockwise into alignment with dispensing port185.

After the material is dispensed by gravity, wheel300is rotated back to the neutral position so that pocket302may be refilled and re-used if necessary. Note that pocket301has remained filled during the entire dispense operation with pocket302, so it too will be ready for a subsequent dispensing operation.

When dispensing has progressed to the point where a fine amount of material is required, the storage dispensing device controller will make use of pocket301to deliver smaller incremental amounts or “shots” of material. In this case, wheel300will be rotated counter-clockwise (viewed from above) until pocket301aligns with dispensing port185and the material is dispensed via gravity. Again, wall180skims off any extra material as pocket301passes underneath it, defining a precise volume of material. Using a smaller pocket in this manner allows resolution of much finer measurements of material.FIG. 18is a top view showing pocket301rotated counter-clockwise into alignment with dispensing port185. Again after dispensing, wheel300is rotated back to the neutral position and storage container18is sealed, ready for further dispensing.

A further refinement to the embodiment ofFIGS. 14-18replaces multi-cavity disk300with a two-piece disk that includes an adjustable volume pocket, as illustrated inFIGS. 19-23. This allows the finest possible control of portion size.FIG. 19shows outer disk400with inner disk500mounted within. Material agitator510is mounted rigidly to inner disk500. A wall501of inner disk500comprises one boundary of the dispensing pocket401or outer disk400. Inner disk500can rotate relative to outer disk400, moving wall501and effectively varying the size of dispensing pocket401. Referring now toFIG. 20, drive coupling420rotates disk400just as in the previous embodiment ofFIGS. 14-18. In this embodiment, a second drive coupling520is provided to independently rotate inner disk500relative to outer disk400. In the preferred embodiment, drive couplings420and520are coaxial, and are driven by separate coaxial stepper motors in or associated with the storage dispensing unit base. Again, other suitable drive configurations can easily be imagined by someone with ordinary skill in the art.

Referring again toFIG. 20, inner disk500has been rotated clockwise relative to outer disk400(by turning coupling520relative to coupling420). This has the effect of positioning wall501closer to the opposing wall of dispensing pocket401, reducing the size of dispensing pocket401. This configuration would be appropriate for precision measurements, such as for final dispensing to an accurate weight. Now referring toFIG. 21, inner coupling520is rotated counter-clockwise relative to outer coupling420. This has the effect of moving wall501farther away from the opposing wall of dispensing pocket401, increasing the size of dispensing pocket401. This configuration would be appropriate for dispensing larger amounts of material at a faster rate.

As in the embodiment ofFIGS. 14-18, the disk assembly400-500is placed in the bottom of storage container18and acts to seal the container while in the neutral position. As all or virtually all of the material will fall by gravity through the dispensing port, little to no excess material will need to be addressed. A layer of non-stick material on walls of the dispensing port may be employed to prevent any material from remaining in the flow path outside of the sealed storage container18. Referring toFIGS. 20-22, prior to dispensing material, the storage dispensing device controller will calculate the ideal cavity or “shot” size. Inner disk500will be rotated relative to outer disk400, via coupler520, in order to adjust the size of dispensing pocket401. Stepper motors may be used, for example, in the base to provide feedback on dispensing pocket size to the controller. Once the proper size has been realized for dispenser pocket401, the disk assembly400-500is rotated together towards the dispensing outlet of storage container, as illustrated inFIG. 23to deliver a precise amount of material defined by the volume of the dispenser pocket401to the dispensing port (not shown) at the lower end of the storage container18. Thus the desired amount of material (i.e., “shot” size) is delivered. While the largest amount of material dispensed each time in pocket401is limited by the size of the disks and container, the smallest size is only limited by the granular nature of the material dispensed, such that 1 gram or less accuracy will typically be achievable.

In an embodiment illustrated inFIG. 24, a precision measurement dispenser unit10includes a controller/processor54attached to memory52. The controller/processor54receives input from the keyboard28and the scale or weighing tray30, and provides output to display26and dispensing unit24. The unit10is also preferably networked for communication with other devices. In an exemplary embodiment, the unit10comprises a wireless transceiver56that uses an antenna58to communicate wirelessly with a network (not illustrated). For example, the transceiver56may be a wi-fi transceiver (i.e., 802.11a/b/g/n/ac), a cellular data transceiver (i.e., LTE, WiMax), or a Bluetooth transceiver. The elements of unit10receive electrical power from a power source64, which may be any suitable source, including but not limited to batteries, solar cells, and power supplies that accept AC current from cords.

Memory52may comprise volatile memory for execution of processes by the controller/processor54, as well as non-volatile memory for storage of programs (i.e., processor-executable instructions) and databases. In an embodiment, the memory52stores recipes. In another embodiment, processor-executable instructions stored in memory52may be configured to control the processor54such that recipes may be wirelessly downloaded or updated via a network, such as the Internet, using transceiver56. In further embodiments, the memory52stores at least one program and database for providing or recommending recipe ingredient substitutions, such as for special diets (low-fat, low-calorie, low-cholesterol, low-carbohydrate, low-sugar, sugar-free, gluten-free, non-allergenic, high-protein, high-calorie, vegetarian, vegan, etc.). In yet another embodiment, the memory52stores at least one program and database for providing recipe portion controls.

The memory52and the controller/processor54may also be used to store expiration dates for materials in storage containers18so that user may be provided with notice when stored materials have expired or are nearing expiration. The memory52and the controller/processor54may further be used to control other storage parameters, such as temperature, humidity, and pressure via sensors and control elements (not shown). Similarly, the memory52and the controller/processor54may also store and execute programs to be used in conjunction with identifiers (e.g., RFID tags) on storage containers to associate the stored material with the correct containers, as well as track material usage and recommend ordering of additional materials.

The preceding description of the embodiments is provided to enable any person skilled in the art to make or use the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the following claims and the principles and novel features disclosed herein. Further, any reference to claim elements in the singular, for example, using the articles “a,” “an,” or “the” is not to be construed as limiting the element to the singular.