CONTAINER SYSTEM FOR DISPENSING FLOWABLE DRY GOODS

Abstract: A soft container (101) and handling system for transporting, handling, and dispensing flowable dry goods (125). The container dispenses the goods through a resealable discharge chute (113). The system is capable of transporting and supporting (128) the container, precisely maneuvering and locating (149) the container and system, and lifting and lowering (130) the container to allow goods to automatically flow from the open chute by only the force of gravity. The system is also capable of dispensing the goods in a precisely controlled manner by pinching the chute closed as the container is lowered and by distorting (136) the container to force all of the goods therefrom.

Description: TITLE A CONTAINER SYSTEM AND METHOD APPARATUS HOLDING AND DISPENSING FLOWABLE DRY GOOD? FIELD OF THE INVENTION The present invention relates to a container and system for handling, storing, and discharging flowable dry materials . BACKGROUND OF THE INVENTION It has recently become common to handle, store and dispense flowable dry goods, such as agricultural feed, plastic molding resins, dry chemicals, and many dry food products, in large soft containers. A typical container of this type has a capacity of approximately one ton, and dimensions of approximately four feet by four feet by four feet. These dimensions allow the containers to be transported and stored on standard pallets. The ease, convenience, and flexibility of using such containers make them most practical and desirable to medium sized processors, for whom small fifty-pound bags of goods are burdensome and not economical. For such users, the purchase of goods in truckloads and the storage in silos is also not feasible, but such containers as are the subject herein still allow the processor to purchase goods "by the ton" as opposed to "by the pound", so that a significant bulk discount can be realized. The ability to store many of these containers in a relatively small area allows the processor to inventory many types of goods simultaneously and access each on short notice. Additionally, these reinforced fabric bag-like containers are reusable many times, offering the processor a significant savings over disposable paper bags or Gaylord boxes, which are generally only reusable once or twice. These containers are filled through the top, and goods are generally dispensed through openings in a side or in the bottom through a variety of methods and means. They are these methods and means of dispensing which to date have been the most troublesome aspects of prior art soft storage containers . Some materials just do not flow as well as others and are inherently more suitable to bottom discharge containers while other materials are very fluid or hazardous and more suitable to side discharge containers. During transporting from the vendor to the customer, and over time, some dry goods can become compacted. As a result, they cake and clump and become not readily flowable. Vibrators are sometimes employed to reduce clumping and improve flow, but this is quite burdensome and complicated and adds an additional expense. Precise and simple control of the flow rate of materials of varying viscosities is not provided and automatic control of flow rate and the termination of discharge is not provided in present systems. Precise control and measurement of the amount of material which has been dispensed, such as by weight, is not provided in present systems. To date, there are no known re-usable soft containers or dispensing systems which provide a means for an individual operator to conveniently handle bulk quantities of dry goods, to move the goods freely about a warehouse, to position the goods precisely where and as needed, to dispense the goods precisely and with minimal loss, and to reseal and restore the containers . SUMMARY OF THE INVENTION The present invention is a soft dry goods container and dispenser and a handling system therefor. The container comprises a substantially planar top, front, back, left side, right side, and bottom panels, arranged in an orthogonal hexahedron. The panels are constructed of a durable and flexible fabric. The top panel has an inlet opening through which the container is filled with the flowable dry goods. The container is adapted to contain the dry goods and to dispense the same through a resealable discharge chute that is provided along the edge formed by the bottom and front panels. The system comprises means for transporting and supporting the container, means for lifting and lowering the container to allow the goods to automatically flow from the open chute in a precisely controllable manner and by only the force of gravity, means for pinching the chute closed as the container is lowered, means for distorting the container to force all of the goods therefrom, and means for precisely maneuvering and locating the container and system. Both the container and the system are adapted to allow an individual to conveniently and effectively handle and dispense dry goods without assistance. OBJECTS OF THE INVENTION It is the primary object of the present invention to provide a dry goods container, and a handling and dispensinc system therefor, that are more efficient and effective than existing containers and systems. It is another object of the invention to provide a container and system that can be operated by an individual user . It is still another object of the invention to provide a container and system that allow a more efficient material discharge. It is still another object of the invention to provide a container and system that allow a more controllable discharge of the goods. It is still another object of the invention to provide a container and system that reduce the problems created by the compacting and caking of the goods before or during discharge without the use of vibrators or such. It is a further object to provide an edge-discharge soft container and a handling system. It is another object of the invention to provide a container with an edge-discharge spout that can be accessed from the front. It is another object of the invention to provide an edge-discharge container including an adjustable flap that maintains the shape and integrity of the container before initial discharge and after partial discharge. These and other objects will be apparent from the description and claims that follow. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A is a side view of a container and system according to the preferred embodiment of the invention in the pre-dispensing condition; Figure IB is a front view of the container and system of Figure 1A invention in the pre-dispensing condition; Figure 1C is a perspective view of the container and system of Figure 1A in the pre-dispensing condition; Figure ID is a sectional side view of the container of Figure 1A in the pre-dispensing condition; Figure IE is a bottom view of the container of Figure 1A in the pre-dispening condition; Figure 2A is a side view of the container and system of Figure 1A with the resealing flap opened and the chute still folded; Figure 2B is a front view of the container and system of Figure 1A with the resealing flap opened and the chute still folded; Figure 2C is a perspective view of the container and system of Figure 1A with the resealing flap opened and the chute still folded; Figure 3A is a side view of the container and system of Figure 1A with the dispensing chute unfolded and extended ' and the container unlifted; Figure 3B is a perspective view of the container and system of Figure 1A with the dispensing chute unfolded and extended and the container unlifted; Figure 4A is a side view of the container and system of Figure 1A with the container lifted and the dispensing chute opened for dispensing therefrom; Figure 4B is a perspective view of the container and system of Figure 1A with the container lifted and the dispensing chute opened for dispensing therefrom; Figure 4C is a sectional side view of the container of Figure 1A with the container lifted and the dispensing chute opened for dispensing therefrom; Figure 4D is a sectional front view of the container of Figure 1A with the container lifted and the dispensing chute opened for dispensing therefrom; Figure 5A is a side view of the container and system of Figure 1A with the winching line retracted to empty the container; Figure 5B is a perspective view of the container and system of Figure 1A with the winching line retracted to empty the container; Figure 5C is a sectional side view of the container of Figure 1A with the winching line retracted to empty the container; Figure 6A is a side view of the container and system of Figure 1A with the container lowered and the dispensing chute pinched by the flow restriction barrier; Figure 6B is a perspective view of the container and system of Figure 1A with the container lowered and the dispensing chute pinched by the flow restriction barrier; Figure 7A is a side view of the container and system of Figure 1A with the chute refolded; Figure 7B is a perspective view of the container and system of Figure 1A with the chute refolded; Figure 8A is a side view of the container and system of Figure 1A with the resealing flap resealed to the lower "velcro" strip; Figure 8B is a perspective view of the container and system of Figure 1A with the resealing flap resealed to the lower "velcro" strip; Figure 9 is a perspective view of the container and system of Figure 1A with the front-moving push/pull arm extended; and Figure 10 is a perspective view of the container and system of Figure 1A with the side-moving push/pull arm extended. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In accordance with the preferred embodiment of the present invention, a soft container 101 for storing and handling flowable dry goods and a system 102 for handling and discharging the goods therefrom is described and depicted in . Figures 1A through 10. The container is preferably constructed of a durable nylon reinforced polyethylene fabric, although any similarly durable, strong, and flexible sheet material may be substituted. The container comprises six panels; top panel 104, front panel 105, right side panel 106, left side " panel 107, back panel 108, and bottom panel 109. The top, side and front and back panels are preferably all sewn together at their edges for their entire lengths, although gluing or hot-sealing might be satisfactory, so long as the seams 110 are at least as strong as the fabric itself. The bottom panel is fully sewn along its edges with the side and back panels, but is not attached to the front panel at the front-bottom edge 111. This is a key element of the invention. The container ' further comprises a funnel-shaped discharge chute 113 and a rectangular resealing flap 114, both made of the same fabric material. The chute includes a top wall 115 and a bottom wall 116, with the top wall being an extension of fabric from the front panel and the bottom panel. The top and bottom walls are sewn together at their side edges 117, but not at the front edge 111, which thereby forms the discharge opening when the container is lifted as depicted in Figures 4A through 5C. Initially though, the chute is folded as can best be seen in Figures 2A through 2C. Shown in Figure IE, the resealing flap is sewn from side to side at its rear edge 119 to the bottom panel 109. At its front edge 120, the flap includes a female "velcro" strip 122. The front panel of the container includes an upper male "velcro" strip 123 and a lower male "velcro" strip 124 affixed horizontally there-across . The flap is thus adapted to extend from the bottom panel, across the container ': front-bottom edge ll j l, over the folded chute, and to be attached to the upper male "velcro" strip before the container is filled with the dry goods. This maintains the container in the shape of a near-perfect Orthogonal hexahedron, which is most efficient for transportation and storage. The container 101 of the Figures is shown in Figures 1A through IE already filled with flowable dry goods 125. The top panel has an inlet opening 126 through which the goods have previously been deposited. This filled container may be placed on a pallet for normal handling, or can be lifted and transported by means of the loading loops 127 at the upper corners, of the container. It is desirable to lift the filled container at these loops when moving the container from a truck or a pallet and onto the bed 128 of Wa-e disnansing system 102. The dispensing system 102 comprises the aforementioned bed 128, two lift support members 130 standing on opposite sides of the bed, a flow restriction barrier 131, and an electro-hydraulic controller 132. The underside of the bed includes two slots 133 that mimic the size and location of standard pallet slots to allow a standard fork-lift or pallet jack to be used in transporting the system. Each lift support member includes an upright post 134 a horizontal lift arm 135, and an emptying winch 136. The support members are positioned so as to straddle the container when it is properly positioned on the bed, with each front distal end 137 and rear distal end 138 of each horizontal lift arm being adjacent a lifting loop 139, four of which are affixed to and positioned midway up the side edges of the container. After so positioning the container on the bed, with its front-bottom edge 111 up against the flow restriction barrier 131 which extends across the forward edge 140 of the bed, the lifting loops are fitted over the distal ends. The emptying winch 136 of each support arm is affixed toward the front distal end 137 of each horizontal lift arm, and has a retractable winch line 141 extending therefrom. The container has two winching loops 142; each affixed at the rear-bottom corner 143 of each side panel. Hooks 144 at the end ' s of the winch lines 141 are attached to the winching loops such that the winch lines lie diagonally across each side panel from the rear-bottom corner toward the front-upper corner 145. The filled container may be stored and handled as is now attached to the dispensing system, or moved to various locations about a warehouse for remote discharge. The bed is also equipped with retractable wheels 147, and has a side-moving push/pull arm 148 and a forward- moving push/pull arm 149, which each can be moved against a stationary object a'nd extended or retracted horizontally to push or pull the dispensing system and thereby locate it more accurately than may be done with a fork-lift. This is best shown in Figures 9 and 10. With the filled container in position for discharging goods as shown in Figures 1A through ID, the resealing flap 114 is peeled from the upper "velcro" strip 123 as shown in Figures 2A through 2C, and the discharge chute 113 is extended as shown in Figures 3A and 3B. The' flow restriction barrier 131 pinche-s the chute to maintain it in a closed configuration and no goods can escape. The controller 132 is then triggered to begin hydraulically raising the horizontal lift arms 135 up and away from the bed 128 to thereby lift the container by the lifting loops 139. As the front-bottom edge 111 of the container is moved from the flow restriction barrier 131, the chute opens as shown in Figures 4A through 4D, and goods begin to flow through the chute at a rate which varies proportionally with the height to which the container is lifted from the bed. To best appreciate the mechanism by which the chute is opened and by which its opening size is controlled, one should look at Figures 4C and 4D. It will be noted that the unsewn front-bottom edge 111 allows the front panel 105 to bow forwardly at that edge and the bottom panel 109 to bow downwardly, opening the chute as the side walls collapse inward. As the container is incrementally lifted from the bed, the bowing incrementally increases and the chute opening expands. This effect additionally allows the side and bottom panels to slope downwardly toward the chute, improving flow and breaking up any goods which might have caked and clumped. Once the container is totally lifted from the bed, the chute achieves its maximum opening size and the rate of flow is maintained at its maximum rate until the bag is near empty or is re- lowered. As the goods are being discharged, an electronic scale within the controller 132 monitors and displays the dispensed and remaining weight of the goods. The controller may be programmed to terminate the discharge at a pre-selected weight by lowering the container as that weight is approached. If the flow rate from the chute is more than ' desired or if the full contents of the container are not to be discharged, the container is simply lowered against the bed to reduce the chute opening size and reduce the flow rate or further lowered against the flow restriction barrier 131, which pinches the chute shut to terminate flow as shown in Figure 6A and 6B. The container may now be resealed and restored for later use of the remaining contents. It should be appreciated though, that the bowing of the front and bottom panels will not be completely removed by the lowering of the container, and the partially discharged container will no longer have a near perfect orthogonal hexahedral shape. So with the chute 113 refolded as shown in Figures 7A and 7B, and the resealing flap 14 pulled upwards and over the chute, the flap can no longer reach the upper "velcro" strip 123. However, the resealing flap can now be attached to the front panel 105 at the lower "velcro" strip 124 as shown in Figures 8A and 8B. Should discharge of the container's entire contents be desired, the container will be maintained in the lifted position of Figures 4A through 4C until flow ceases. This will occur before the contents are entirely discharged, because the slope of the bottom panel is not sufficient to cause all of the goods towards the back panel to flow to the chute. The controller can now be activated, either manually or by automatically sensing the remaining weight, to retract the winch lines 141 into the winches 136 and thereby pull the back bottom edge 150 of the container upward and forward, increasing the slope of the bottom panel towards the chute, and causing the remaining goods to discharge. Once the container is completely emptied, it can be washed, resealed as originally, and reused indefinitely. It should be appreciated by those skilled in the art that the disclosed is simply the preferred of many possible embodiments of the invention, and therefore, the scope of the invention should only be limited by the following claims.

Claims: WHAT IS CLAIMED IS: 1. A container for holding and dispensing flowable dry goods and comprising: an upper portion defining a compartment for retaining said dry goods; a bottom wall portion for supporting said container on a surface, said bottom wall portion defining a discharge opening allowing gravity-induced discharge of said dry goods from said compartment; and lift means for either raising , said container from said surface to expose said opening to induce said discharge of said dry goods, or lowering said container onto said surface to close said opening to terminate said discharge of said dry goods . ' 2. A container according to claim 1 including a flap secured to said container and movable between a first position closing said opening and a second position exposing said opening. 3. A container according to claim 1 wherein said bottom portion comprises a flexible chute defining said opening. 4. A container according to claim 3 including a flap. secured to said container and movable between a first position closing said opening and a second position exposing said opening. 5. A container according to claim 1 wherein said upper portion comprises: a rectangular top wall; two opposing side walls depending therefrom; opposing front and back walls extending between said opposing side walls; each of said walls having four edges; each of said edges connected along its entirety in an orthogonal configuration to that of said other walls to which it is adjacent; wherein said bottom wall portion opposes said top wall and has a back edge adjacent said back wall, two side edges each adjacent one of said side walls, and a front edge adjacent said front wall wherein said back and side edges are connected along their entireties in orthogonal configuration to that of said walls to which each is adjacent, but said front edge is substantially unconnected to said adjacent front wall; and wherein said means for either raising or lowering said container induces said substantially unconnected edge to spread when said c'ontainer is raised to thereby open said discharge' opening and induce said discharge, and to close when said container is lowered to thereby terminate said discharge. 6. The container of claim 5 further comprising a flexible chute extendable from said discharge opening into a discharge position whereby said. goods are discharged therethrough . 7. The container of claim 6 further comprising a removable sealing flap adaptable in a first flap storage position to cover said front edge and to enclose and maintain said chute in a closed position, and adaptable in a flap dispensing position to liberate said chute and allow said chute to extend into. said discharge position. 8. The container of claim 7 wherein said sealing flap is further adaptable in a second flap storage position to enclose said chute in said closed position when said substantially unconnected edge is spread. 9. The container of claim 5, wherein said side walls collapse inwardly adjacent said bottom wall portion when said container is raised, to thereby help to loosen any of said goods therebetween which have become caked . 10. The container of claim 5 wherein said bottom wall portion slopes downwardly toward said substantially unconnected front edge when said container is lifted, to thereby induce 'said goods to flow toward, and through said discharge opening. 11. The container of claim 10, further comprising emptying means for increasing said downward slope of said bottom wall portion as said goods within become nearly depleted thereby inducing said nearly depleted goods to flow toward and through said discharge opening. 12. The container of claim 8 wherein: said side walls collapse inwardly adjacent said bottom wall portion when said container is raised, to thereby help to loosen any of said goods therebetween which have become caked; said bottom wall portion slopes downwardly toward said substantially unconnected front edge when said container is raised, to thereby induce said goods to flow toward and through said discharge opening; and further comprising: emptying means for increasing said downward slope of said bottom wall portion as said goods within become nearly depleted, thereby inducing said nearly depleted goods to flow toward and through said discharge opening. 13. A system for handling containers of flowable dry goods, said containers comprising: an upper portion defining a compartment for retaining the dry goods; a bottom Wall portion for supporting said container on -a surface, said bottom wall portion defining a discharge opening allowing gravity-induced discharge of said dry goods from said compartment; and said system comprising lift means for either raising said container from said surface to expose said opening to induce said discharge of said dry goods, or lowering said container onto said surface to close said opening and terminate said discharge of said dry goods. 14. The system of claim 13 wherein said containers further comprise: a rectangular top wall; two opposing side walls depending therefrom; opposing front and back walls extending between said opposing side walls, each of said walls having four edges, each of said edges connected along its entirety in an orthogonal configuration to that of said other walls to which it is adjacent-; and said bottom wall portion opposes said top wall and has a back edge adjacent said back wall, two side edges each adjacent one of said side walls, and a front edge adjacent said front wall, said back and side edges connected along their entireties in orthogonal configuration to that of said walls to which each is adjacent, but said front edge being substantially unconnected to said adjacent front wall; and ssi±ύ means for either raising or lowering said container induces said substantially unconnected edge to spread when said container is ' raised to thereby form said discharge opening and induce said discharge, and to close when said container is lowered to thereby terminate said discharge. 15. The system of claim 14 wherein: said container further comprises a flexible chute extendable from said discharge opening into a discharge position whereby said goods are dispensable therethrough; and said system further comprises a flow restriction barrier to pinch said flexible chute closed when said container is so lowere . 16. The system of claim 14 further comprising means for emptying said container as said goods within become nearly depleted, by inducing said nearly depleted goods to flow toward and through said discharge opening. 17. The system of claim 14 further comprising pallet-mimicking slots to allow the system to be handled by a standard fork lift or pallet jack. 18. The system of claim 14 further comprising integral positional adjustment means for moving said system toward or from a stationary object. 19. The system of claim 14 further comprising a controller including ' weight monitoring means coupled to flow control means, whereby said weight monitoring means monitors the weight of said goods being dispensed, and said flow control means is automatically adjustable by said weight monitoring means to control said discharge according to said monitored weight. 20. -The system of claim 19 wherein said controller further comprises means for pre-selecting a desired dispense weight, and wherein said flow control means automatically terminates said discharge of said goods when said dispense weight reaches said pre-selected dispense weight. 21. The system of claim 14 wherein: said container further comprises a flexible chute extendable from said discharge opening into a discharge position, whereby said goods are dischargable therethrough; said system 'further comprises a flow restriction barrier to pinch said flexible chute closed when said container is so lowered; means for emptying said container as said goods within become nearly depleted, by forcing said nearly depleted goods to flow toward ,and through said discharge opening; pallet-mimicking slots to allow the system to be handled by a standard fork lift or pallet jack; integral positional adjustment means for moving said system toward or from a stationary object; a controller including weight monitoring means; flow control means coupled thereto, whereby said weight monitoring means monitors the weight of said goods being discharged, and said flow control means is automatically adjustable by said monitoring means to control said discharge according to said monitored weight; and means for pre-selecting a desired dispense weight, and wherein said flow control means automatically terminates said discharge of , said goods when said dispense weight reaches said pre-selected dispense weight. 22. ' A controller for a flowable dry goods dispensing system comprising: weight monitoring means; flow control means coupled thereto whereby said weight monitoring means monitors the weight of said goods being dispensed; and said flow control means is automatically adjustable by said monitoring means to control said dispensing according to said monitored weight. 23. The controller of claim 22 further comprising means for pre-selecting a desired dispense weight, and wherein said flow control means terminates dispensing of said goods when said dispense weight reaches said pre-selected dispense weight. 24. A controller for .a flowable dry goods dispensing system comprising: weight monitoring means; means coupled to said weight monitoring means for emptying said dry goods as said goods become nearly depleted, whereby said weight monitoring means monitors the weight of said goods being dispensed; and said means for emptying is activated automatically by said monitoring means to cause said emptying according to said monitored weight:. 25. The controller of claim 24 further comprising means for pre-selecting a desired emptying weight, and wherein said emptying means is activated when said weight of said goods reaches said pre-selected emptying weight. 26. A method for dispensing flowable dry goods comprising the steps of: providing a container having an upper portion defining a compartment and a bottom wall portion defining an opening; filling said compartment with flowable dry goods; supporting said container on a surface engaging said bottom wall portion to close said opening and thereby prevent gravity-induced discharge of said dry goods through said opening; raising said container off of said surface to expose said opening and thereby induce discharge of a portion of the dry goods through 'said opening; and lowering said container onto said surface to close said opening and thereby terminate said discharge of said dry goods through said opening. 27. A method according to claim 26 wherein said providing step includes providing said bottom portion defining said opening. 28. A method according to claim 27 including the steps of: providing said container with a flap movable between a first position closing said opening and a second position exposing said opening; securing said flap in said first position to prevent discharge of said dry goods with said container separated from said surface; and releasing said flap to allow movement thereof into said second position and thereby allow discharge of said dry goods through said opening with said container supported from said surface. 29. A method according to claim 26 including the steps of: providing said container with a flap movable between a first position closing said opening and a second position exposing said opening; filling said compartment with flowable dry goods; supporting said container on a surface engaging said bottom wall portion to close said opening and thereby prevent gravity induced discharge of said dry goods through said opening raising said container off of said surface to expose said opening and thereby induce discharge of a portion of the dry goods through said opening; and lowering said container onto said surface to close said opening and thereby terminate said discharge of said dry goods through said opening. 30. A method of claim 26 wherein said containers further comprise: a rectangular top wall; two opposing side walls depending therefrom; opposing front and back walls extending between said opposing side walls; each of §aid walls having four edges; each of said edges connected along its entirety in an orthogonal configuration to that of said other walls to which it is adjacent; and wherein said bottom wall portion opposes said top wall and having a back edge adjacent said back wall, two side edges each adjacent one of said side walls, and a front edge adjacent said front wall, said back and side edges connected along their entireties in orthogonal configuration to that of said walls to which each is adjacent, but said front edge being substantially unconnected to said adjacent front wall; and wherein raising said container induces said substantially unconnected edge to spread to thereby form said opening and induce said discharge; and lowering said container closes said opening to thereby terminate said discharge. 31. A method for controlling the dispensing of flowable dry goods comprising: monitoring the weight of said goods; coupling said monitored weight to a flow control means; and controlling said dispensing by said flow control means according to said monitored weight. 32. A method of claim 31 further comprising: pre-selecting a desired dispense weight; and terminating dispensing of said goods by said flow control means when said dispense weight reaches said preselected dispense weight.

Inventors: HUTCHINS BURLEIGH M, HUTCHINS, BURLEIGH, M.
Applicants: HUTCHINS BURLEIGH M, HUTCHINS, BURLEIGH, M.
Application year: 2001
Main classification: B67D3
IPC codes: B65B69, B65D88