A lifting bag having at least one side wall and a closed bottom forming an interior, the bag further having a closable top portion connected to the sidewall and adapted to close the interior of the bag. The opening is a single slit centered on the bag top and closable with a zipper. The lifting bag
A lifting bag having at least one side wall and a closed bottom forming an interior, the bag further having a closable top portion connected to the sidewall and adapted to close the interior of the bag. The opening is a single slit centered on the bag top and closable with a zipper. The lifting bag includes a sling coupled to the bag, generally through a edge strip positioned at ore near the top edge of the bag. The bag can be constructed from a single multilayered sheet. The bag is used in conjunction with a lifting strap system.
대표청구항▼
1. A method of lifting a lifting bag, wherein said lifting bag comprises a fabric, non-self supporting bag, said fabric bag having a closed bottom portion, a top portion—a bag sidewall extending between said bag top and bottom portions, and a single, closeable opening, said single closable opening p
1. A method of lifting a lifting bag, wherein said lifting bag comprises a fabric, non-self supporting bag, said fabric bag having a closed bottom portion, a top portion—a bag sidewall extending between said bag top and bottom portions, and a single, closeable opening, said single closable opening positioned on said top portion, said bag top portion, said sidewall and said bottom portion defining an interior and an exterior, and a lifting strap sling, said lifting strap sling comprising a series of lifting straps, said lifting strap sling having a bottom extension, a sidewall extension and a top extension, said top extension of said lifting strap sling further comprising a first set of said lifting straps, each of said first set of lifting straps having a connector attachable to a lifting device above said bag top portion, said bottom extension of said lifting strap sling further comprising an intersecting pattern of a number of said series of lifting straps adjacent said bag closed bottom portion and supporting said bag on said closed bottom portion when said lifting bag is connected to a lifting device, said bottom portion of said lifting bag being further defined as that portion of said lifting bag, that materials first rest against when loaded into an empty lifting bag and said closed bottom portion being opposed to said bag top portion; said lifting bag further comprising a plurality of strap retention devices, a top subset of said strap retention devices coupled to said bag near said top portion of said bag, said first group of lifting straps being coupled to said top subset of said strap retention devices, each of said first group of lifting straps being substantially fixed in position horizontally to said bag exterior by a corresponding strap retention device, said lifting bag further having a series of fasteners, each of said fasteners removably coupling one of said first group of lifting straps to said lifting bag to substantially fix the vertical position of said coupled lifting strap to near said bag top portion when coupled, but said bag exterior, when said first group of fasteners does not couple said first group of lifting straps to said lifting bag, being movable with respect to said lifting straps so that exterior of said lifting bag can be moved down said coupled lifting straps until said top portion is positioned adjacent said bottom portion of said lifting bag, when said lifting bag is empty and supported by a lifting device;said method comprising the steps of coupling a lifting device to said connectors, and raising said lifting device sufficiently upwardly, whereby said lifting bag and said load is lifted and supported entirely by said series of coupled lifting straps, and whereby said coupling of said fabric bag to said lifting straps allows said sidewall portion of said fabric bag to be movable vertically relative to said lifting straps when the lifting bag is raised by the lifting device. 2. The method according to claim 1 wherein said fasteners are coupled to a subset of said series of lifting straps, and said method further comprises the step of uncoupling said coupled fasteners prior to lifting said lifting device sufficiently upwardly. 3. A method of elevating a lifting bag, the method comprising: a) providing a lifting bag comprising: i. a fabric bag defining an interior volume for containing a load, said fabric bag having a bottom, one or more walls, and a single, closeable opening, said single closable opening adjacent to an upper end of the one or more walls;ii. a plurality of upper strap retention devices attached to the fabric bag's one or more walls; andiii. a lifting sling comprising a plurality of lifting straps positioned around an exterior periphery of the fabric bag for supporting the load, the lifting straps comprising: i) lower portions positioned adjacent to the fabric bag's bottom, ii) middle portions positioned adjacent to the fabric bag's walls, and iii) upper portions extending above the fabric bag, wherein the middle portions of the lifting straps engage the upper strap retention devices to couple the lifting straps to the fabric bag yet allow the lifting straps to be slidable vertically relative to the upper strap retention devices between the fabric bag's top portion and the fabric bag's bottom portion; andb) coupling the lifting straps' upper portions to a lifting device positioned above the fabric bag using one or more connectors; andc) raising said lifting device upwardly, wherein the coupling of the upper strap retention devices to the middle portions of the lifting straps allow the one or more walls of the fabric bag to be movable vertically relative to the lifting straps when the lifting bag is raised by the lifting device, and wherein the fabric bag and the contained load are supported entirely by the lifting sling when the lifting bag is raised by the lifting device. 4. A method of loading and lifting a lifting bag, where the lifting bag comprises where said lifting bag comprises a fabric bag adapted for lifting loads, said fabric bag having a top portion, a closed sidewall portion, a closed bottom portion, and a single closable opening, said single opening positioned on said top portion, said sidewall portion extending between said top and bottom portions; said sidewall portion, said bottom portion and said top portion defining a bag interior and a bag exterior, with said closeable opening allowing access to said bag interior, said lifting bag further comprising a lifting strap system coupled to said lifting bag, said lifting strap system comprising a plurality of lifting straps, said lifting strap system adapted to support a load within said fabric bag on said bottom portion when lifted, said lifting straps coupled to said fabric bag near said bag top portion so that said lifting strap system is positioned adjacent to said bag exterior at a plurality of coupling points but configured so that said lifting strap system is slidable with respect to said bag about said coupling points, said lifting strap system having a series of said lifting straps that extends above said top portion of said bag top portion and terminating in a connector said method comprising the steps of positioning said lifting bag in in a frame, where the frame comprises rigid upstanding sidewalls having a lower terminating edge and an upper terminating edge, a bottom extending between said lower terminating edge, said frame further having an open top extending between said upper terminating edge, said sidewalls defining a volume interior said sidewalls, where the said lifting bag is positioned in said frame so that said bottom portion is adjacent said frame bottom and said top portion of said fabric bag is opened thereby allowing access to said bag interior through said open top of said loading frame; said method further comprising the steps of placing a load in the interior of said fabric bag through said open top portion when said bag is positioned in said frame, said method further comprising the steps of positioning a lifting frame above said loaded lifting bag positioned in said loading frame, and attaching said series of straps that terminate in said connectors to said lifting frame at said connectors, said method further comprising the step of closing said bag open top portion said method further comprising the steps of raising said lifting frame upwardly until said loaded lifting bag bottom portion is above said upper terminating edge of said loading frame, whereby said top portion of said lifting bag slides toward said bag bottom portion about said coupling points until said bag top portion rests on said load in said bag interior. 5. The method of claim 4 where said lifting strap system further comprises a series of strap restraints, each of said series of straps that extend above said top portion further being releasingly coupleable to one of said strap restraints, and when so coupled, said strap restraints restricting the capability of said lifting strap system to slide about said coupling points; where the method further comprises the step of releasing each of said straps that are coupled to said strap restraints prior to lifting said loaded lifting bag above said upper terminating edge of said frame. 6. The method of claim 4 wherein said lifting straps are coupled to an edge strip positioned near said top portion of said bag. 7. The method of claim 6 where said edge strip comprises a fabric strip having a series of grommets positioned there through. 8. A method of claim 4 wherein said lifting strap system further includes a belly strap, said belly strap horizontally encircling said exterior sidewall portion of said bag at a distance of about ⅓ to ½ of the bag sidewall length above said bag bottom. 9. The method of claim 4 wherein said lifting straps are fixedly attached to said bag exterior only on said bottom portion.
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이 특허에 인용된 특허 (72)
Stinson Margaret C. (N. Billerica MA) Galanek Mitchell S. (Plymouth MA), Apparatus for infectious radioactive waste.
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