Patents Assigned to Super Sack Manufacturing Corporation
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Patent number: 5203633Abstract: A spread strap flexible bulk container comprises a flexible bulk container having a plurality of panels seamed together to form a substantially square container with vertical seams connecting the panels located equidistant between adjacent corners of the container as opposed to the seams being located at the corners. Lift straps for supporting the container are attached at opposed ends to the container beginning at adjacent seams and extending diagonally upwardly to loop over the corners of the container. Bridge panel may be inserted into the container and each bridge panel attached to a single panel or a portion of a single panel.Type: GrantFiled: September 25, 1991Date of Patent: April 20, 1993Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 5165802Abstract: A spread strap flexible bulk container comprises a flexible bulk container having a plurality of panels seamed together to form a substantially square container with vertical seams connecting the panels located equidistant between adjacent corners of the container as opposed to the seams being located at the corners. Lift straps for supporting the container are attached at opposed ends to the container beginning at adjacent seams and extending diagonally upwardly to loop over the corners of the container. Bridge panel may be inserted into the container and each bridge panel attached to a single panel or a portion of a single panel.Type: GrantFiled: December 10, 1991Date of Patent: November 24, 1992Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 5158367Abstract: A spread strap flexible bulk container comprises a flexible bulk container having a plurality of panels seamed together to form a substantially cylindrical container with vertical seams connecting the panels. Lift straps for supporting the container are attached at opposed ends to the container beginning adjacent the seams and extending diagonally upwardly to loop over the top panel of the container.Type: GrantFiled: July 17, 1991Date of Patent: October 27, 1992Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 5076710Abstract: A spread strap flexible bulk container comprises a flexible bulk container having a plurality of panels seamed together to form a substantially square container with vertical seams connecting the panels located equidistant between adjacent corners of the container as opposed to the seams being located at the corners. Lift straps for supporting the container are attached at opposed ends to the container beginning at adjacent seams and extending diagonally upwardly to loop over the corners of the container. Bridge panel may be inserted into the container and each bridge panel attached to a single panel or a portion of a single panel.Type: GrantFiled: November 20, 1990Date of Patent: December 31, 1991Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 4917266Abstract: An improved discharge spout construction for a collapsible receptacle where the entire assembly is constructed with one pass of a double needle sewing machine, thus enabling the construction to be accomplished in a very economical and efficient manner. The spout, the panel which covers the opening in the bottom of the receptacle and the folded triangular flaps which form the drawstring passageways are all sewed together with two spaced sew lines to create a buffer zone between product in the receptacle and the cuts forming the triangular flaps so that if the cuts tear past the first sew line, the second sew line separates the product from the tear.Type: GrantFiled: February 3, 1989Date of Patent: April 17, 1990Assignee: Super Sack Manufacturing CorporationInventors: David Kellenberger, Nancy Cline, Craig Nickell
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Patent number: 4878600Abstract: A discharge spout on the bottom wall of a collapsible receptacle has an exterior layer which is grounded during the flow of material through the discharge spout to prevent buildup of static electric charge therein. The discharge spout is made from a metalized fabric having a lower layer of fabric. Secured to the fabric layer is an upper film layer. At least a portion of the exposed surface of the film layer is metalized or laminated with foil.Type: GrantFiled: July 13, 1988Date of Patent: November 7, 1989Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 4759473Abstract: A collapsible receptacle (10) for handling flowable materials in semi-bulk quantities includes integral sling structure. The receptacle (10) comprises side panels (30, 32, 34 and 36), a top panel (48) including a fill spout (52), and a bottom panel (58). Lift sleeves (38, 40) are formed in an opposing pair of side panels (34, 36) for supporting the receptacle (10) without an external sling arrangement or pallet. In another embodiment, the receptacle (120) includes bands (122) of continuous filaments woven into two side panels (34", 36") for additional strength. In another embodiment, the receptacle (150) is formed from a receptacle blank (158) comprised of one piece of material. Another feature of the invention is the reinforced bottom panel (124) construction.Type: GrantFiled: February 6, 1984Date of Patent: July 26, 1988Assignee: Super Sack Manufacturing CorporationInventors: Norwin C. Derby, Robert R. Williamson
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Patent number: 4691371Abstract: A receptacle (10) is provided including an enclosure (20) having a bottom wall (42). The bottom wall (42) is provided with an opening (48) through which a discharge spout (50) extends. The discharge spout (50) can be drawn across the opening (48) and inserted in a pocket (64) mounted on the bottom wall (42) to prevent the contents of the receptacle (10) from discharging through the opening (48). A strap (56) is secured to the lower end of the discharge spout (50) to facilitate removal of the spout from the pocket (64).Type: GrantFiled: December 26, 1985Date of Patent: September 1, 1987Assignee: Super Sack Manufacturing CorporationInventor: Norwin C. Derby
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Patent number: 4479243Abstract: In the construction of a collapsible receptacle there is provided a length of fabric material and a length of webbing material formed from the same material as the length of fabric material. A plurality of lift loops formed from length of webbing material are positioned at spaced points along the length of fabric material with the lower ends of the lift loops located more than a predetermined distance above the lower edge of the material. After the lift loops are secured to the length of fabric material, the assembly is secured around the upper end of a collapsible receptacle body panel with the lift loops projecting above the upper edge of the panel. A line of stitching is used to at least partially secure the assembly to the body panel, with the line of stitching positioned at least the predetermined distance below the lowermost end of the lift loops.Type: GrantFiled: February 17, 1983Date of Patent: October 23, 1984Assignee: Super Sack Manufacturing CorporationInventors: Norwin C. Derby, Robert R. Williamson
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Patent number: 4224970Abstract: A collapsible receptacle for handling flowable materials in semi-bulk quantities comprises a generally cylindrical container supported by a sling. The container features top loading and bottom discharge. The container can be constructed of a strong weave material. Preferably, the container is constructed of a unique laminate material formed of an inner liner of polybutylene film noncontinuously adhered to an outer layer of woven polypropylene. The sling is constructed of straps of polyester webbing, which are sewn to the container so that support stresses are distributed between the sling and the container. In one embodiment, the sling includes a ring for supporting the bottom of the container and lift straps attached to the ring. The ring surrounds a unique discharge spout in the container bottom. In another embodiment, the lower ends of the lift straps include guide loops for a draw rope. The draw rope surrounds a wire tie which functions to gather and close the bottom of the container.Type: GrantFiled: October 18, 1978Date of Patent: September 30, 1980Assignee: Super Sack Manufacturing CorporationInventors: Robert R. Williamson, Norwin C. Derby
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Patent number: 4194652Abstract: A collapsible receptacle for handling flowable materials in semi-bulk quantities comprises a generally cylindrical container supported by a sling. The container features top loading and bottom discharge. The container can be constructed of a strong weave material. Preferably, the container is constructed of a unique laminate material formed of an inner liner of polybutylene film noncontinuously adhered to an outer layer of woven polypropylene. The sling is constructed of straps of polyester webbing, which are sewn to the container so that support stresses are distributed between the sling and the container. In one embodiment, the sling includes a ring for supporting the bottom of the container and lift straps attached to the ring. The ring surrounds a unique discharge spout in the container bottom. In another embodiment, the lower ends of the lift straps include guide loops for a draw rope. The draw rope surrounds a wire tie which functions to gather and close the bottom of the container.Type: GrantFiled: October 30, 1978Date of Patent: March 25, 1980Assignee: Super Sack Manufacturing CorporationInventors: Robert R. Williamson, Norwin C. Derby
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Patent number: 4143796Abstract: A collapsible receptacle for handling flowable materials in semi-bulk quantities comprises a generally cylindrical container supported by a sling. The container features top loading and bottom discharge. The container can be constructed of a strong weave material. Preferably, the container is constructed of a unique laminate material formed of an inner liner of polybutylene film noncontinously adhered to an outer layer of woven polypropylene. The sling is constructed of straps of polyester webbing, which are sewn to the container so that support stresses are distributed between the sling and the container. In one embodiment, the sling includes a ring for supporting the bottom of the container and lift straps attached to the ring. The ring surrounds a unique discharge spout in the container bottom. In another embodiment, the lower ends of the lift straps include guide loops for a draw rope. The draw rope surrounds a wire tie which functions to gather and close the bottom of the container.Type: GrantFiled: July 7, 1977Date of Patent: March 13, 1979Assignee: Super Sack Manufacturing CorporationInventors: Robert R. Williamson, Norwin C. Derby