Supports: racks – Special article – Receptacle support
Reexamination Certificate
1999-10-18
2001-04-10
Gibson, Jr., Robert W. (Department: 3634)
Supports: racks
Special article
Receptacle support
C211S194000, C248S097000, C248S099000
Reexamination Certificate
active
06213315
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to bulk bag support rack systems for facilitating storage of large bulk bags. More particularly, the present invention concerns a support rack that is designed to support a bulk bag during both storage and unloading. The present invention also particularly concerns a bulk bag storage and unloading system that includes a bag unloading station that cooperates with the inventive support rack to facilitate unloading of the bag supported by the rack.
2. Discussion of Prior Art
Bulk material (e.g., dog food, grain, etc.) will often be contained within large bags so as to facilitate transport, distribution and overall handling of the material. A standard bulk material bag typically includes a top material inlet and a bottom material outlet, such that material is loaded into the bag through the top inlet and unloaded through the bottom outlet. Furthermore, a bulk bag will often have an internal dimension of sixty-four cubic feet and be capable of holding as much as one ton of bulk material therein.
Those ordinarily skilled in the art will appreciate that bulk bags are unwieldy and that contact or direct handling of the bag is likely to risk bag punctures or complete bag failure. In this respect, a filled bag will typically be stored on a support rack that is designed to maintain the bag in an upright orientation. The support rack also permits the bag to be moved without the bag having to be contacted or directly handled. For example, the support rack may include a standard pallet-type base that can supported by the forks of a standard forklift. The filled bag supported on such a rack can consequently be moved without requiring any contact or direct handling. Conventional support racks are also typically configured to be stacked on top of one another so that the filled bags stored thereon are in effect stackable.
Even with such bag support rack systems, there is still the need to remove the bag from the support rack when it is desired to unload the bag. In other words, conventional support racks only facilitate storage of bulk bags and provide no support during or assistance with unloading of the bag. In most cases, the bag is lifted off the rack (e.g., by attaching the bag to a mobile lift such as an overhead chain hoist), moved by the lift to an unloading location (e.g., above the hopper of a screw conveyor), and then maintained in a suspended condition by the lift during unloading. Not only does suspension of the bag provide access to the bottom outlet, clogging is prevented and complete emptying of the bag is ensured.
OBJECTS AND SUMMARY OF THE INVENTION
Responsive to these and other problems, an important object of the present invention is to provide a bulk bag storage and unloading system that eliminates user contact and handling of the bag. In this respect, it is an important object of the present invention to provide a bag support rack that is capable of supporting the bag during both storage and unloading of the bag. It is also an important object of the present invention to provide a bag support rack that facilitates unloading of the bag. In addition, an important object of the present invention is to provide a bag unloading station that cooperates with the bag support rack to facilitate unloading of the bag. Yet another important object of the present invention is to provide a bag storage and unloading system that has a durable, inexpensive and simple construction.
In accordance with these and other objects evident from the following description of the preferred embodiment, the present invention concerns a bag support rack including a bag suspension frame attachable to the bag in such a manner that the attached bag can be suspended from the frame. The rack also includes a base having a support surface configured to support the attached bag thereon. The frame and base are shiftably intercoupled so as to permit relative vertical shifting. The rack may consequently be vertically expanded from a storage condition in which the attached bag is at least primarily supported on the support surface to an unloading condition in which the attached bag is suspended from the frame.
The present invention also concerns a bag unloading station including a stand that is configured to support the frame and the attached bag. The stand includes a stop configured to engage the base, when the frame is supported on the stand and the rack is in the vertically expanded unloading condition, so as to prevent further downward shifting of the base relative to the frame. In this respect, if the frame and base are permitted to shift freely relative to one another between the storage and unloading conditions of the rack, the frame may be placed on the stand and the base will automatically drop relative to the frame to the unloading condition of the rack. The bag will then be suspended from the frame and ready for unloading.
Other aspects and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments and the accompanying drawing figures.
REFERENCES:
patent: 110511 (1870-12-01), Swogger
patent: 495728 (1893-04-01), Elliott
patent: 1923816 (1933-08-01), Firl
patent: 3762343 (1973-10-01), Thacker
patent: 4527716 (1985-07-01), Haas et al.
patent: 4934636 (1990-06-01), Orlosky et al.
patent: 4966311 (1990-10-01), Taylor
patent: 5217125 (1993-06-01), Swanson
patent: 5787945 (1998-08-01), Riemersma
patent: 5924577 (1999-07-01), Gessert
patent: 5951228 (1999-09-01), Pfeiffer et al.
patent: 5957287 (1999-09-01), Valenti et al.
Forney Thomas M.
Weber Dean A.
BKD Group, Inc.
Gibson , Jr. Robert W.
Hovey Williams Timmons & Collins
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