Patents Assigned to Liberty Industries
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Patent number: 5718394Abstract: A web tensioning device to maintain a pre-selected web tension during web delivery and web roller take-up. The device comprises a web pressure sensing roller, tension pre-selection and conditioning circuitry means associated therewith. A motor controller responsive to condition circuitry input selectively controlling a supply roller.Type: GrantFiled: July 14, 1993Date of Patent: February 17, 1998Assignee: Liberty Industries, Inc.Inventors: Robert B. Simons, Russell Parish
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Patent number: 5657941Abstract: A web tensioning device to maintain a pre-selected web tension during web delivery and web roller take-up. The device comprises a web pressure sensing roller, tension pre-selection and conditioning circuitry associated therewith. A motor controller responsive to condition circuitry input selectively controlling a supply roller in a closed loop self-regulating system to maintaining desired film tension despite input roller variations.Type: GrantFiled: November 20, 1995Date of Patent: August 19, 1997Assignee: Liberty Industries, Inc.Inventors: Robert Simons, Russell Parish
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Patent number: 5575138Abstract: An apparatus for dispensing and applying stretchable adhesive tape to unitize a multiple unit load. The apparatus includes a tape dispenser head on a movable carriage that pre-stretches a narrow band of adhesive tape around a load positioned on an adjacent turn table in a spiral wrapping configuration as the movable carriage ascends and descends vertically in relation to the load while a secondary movable carriage having a tape supply moves within the tape dispenser carriage. Textured pre-stretch rollers and adjacent guides elongate and guide the adhesive tape within the tape dispensing carriage.Type: GrantFiled: June 29, 1995Date of Patent: November 19, 1996Assignee: Liberty IndustriesInventors: Lawrence P. Reigrut, Robert Simons
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Patent number: 5572855Abstract: An apparatus for dispensing and applying stretchable adhesive tape to unitize a multiple unit load. The apparatus includes a tape dispenser head on a movable carriage that pre-stretches a narrow band of adhesive tape around a load positioned on an adjacent turn table in a spiral wrapping configuration as the movable carriage ascends and descends vertically in relation to the load while a secondary movable carriage having a tape supply moves within the tape dispenser carriage. Textured pre-stretch rollers and adjacent guides elongate and guide the adhesive tape within the tape dispensing carriage.Type: GrantFiled: January 9, 1995Date of Patent: November 12, 1996Assignee: Liberty IndustriesInventors: Lawrence P. Reigrut, Robert Simons
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Patent number: 5522207Abstract: An improvement in a bridge conveyor for a rotary stretch film wrapping apparatus for wrapping a product in a plastic film. The products are conveyed to a transition bridge around which the elongated shrink film is wrapped. The improved bridge conveyor system includes a pair of horizontally spaced air assisted guides adjacent an endless conveyor. The air assisted guides provide an air cushion on which the plastic film rides.Type: GrantFiled: November 10, 1994Date of Patent: June 4, 1996Assignee: Liberty IndustriesInventor: Charles Keip
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Patent number: 5505042Abstract: An improvement in a bridge conveyor for a rotary stretch film wrapping apparatus for wrapping a product in a plastic film. The products are conveyed to a transition bridge around which the elongated shrink film is wrapped. The improved bridge conveyor system includes a pair of horizontally spaced air assisted guides adjacent an endless conveyor. The air assisted guides provide an air cushion on which the plastic film rides.Type: GrantFiled: March 29, 1993Date of Patent: April 9, 1996Assignee: Liberty IndustriesInventor: Charles Keip
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Patent number: 5285891Abstract: An improvement in a conveyor for a rotary stretch film wrapping apparatus for wrapping a product in a plastic film, the rotary stretch wrapping apparatus includes a base frame, a rotary support structure, a roll of film mounted to the support structure, a film dispensing mechanism, a pre-stretching device, and a conveyor system for passing the product through the support structure. The improved conveyor system includes a pair of horizontally adjacent endless conveyors having one piece segmented lug belts adapted to prevent portions of the segments traveling the return path from hindering the product or the plastic wrap.Type: GrantFiled: June 1, 1992Date of Patent: February 15, 1994Assignee: Liberty IndustriesInventor: Charles P. Keip
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Patent number: 5020300Abstract: A wipe down method for use on web wrapping devices used to unitize a multiple unit wrapped load. The wipe down method has multible steps including an extensible wiper support and a wiper element having one or more strips, one of which is doubled back along a portion of its length to form a load engaging loop. The strips being flexible along focal points when in contact with a load and moving parallel with the load wiping the wrapped load as it passes the wiper support.Type: GrantFiled: July 23, 1990Date of Patent: June 4, 1991Assignee: Liberty Industries, Inc.Inventor: Larry Casteel
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Patent number: 4991381Abstract: An improvement in a stretch wrapped braking apparatus used to restrict a roll of stretch material on a single roller stretch wrapping apparatus. The improved brake uses a modified controlled magnetic motor to impart braking effect indirectly to the roll of stretch material as it is pulled therefrom by a rotating load to be wrapped.Type: GrantFiled: June 7, 1989Date of Patent: February 12, 1991Assignee: Liberty IndustriesInventor: Robert B. Simons
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Patent number: 4955181Abstract: A wipe down apparatus for use on web wrapping devices used to unitize a multiple unit wrapped load. The wipe down apparatus includes an extensible wiper support and a wiper element having one or more strips, one of which is double back along a portion of its length to form a load engaging loop. The strips being flexible along focal points when in contact with a load and moving parallel with the load wiping the wrapped load as it passes the wiper support.Type: GrantFiled: October 27, 1989Date of Patent: September 11, 1990Assignee: Liberty IndustriesInventor: Larry Casteel
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Patent number: 4807427Abstract: An improvement for use with a stretch wrapping apparatus that applies stretchable plastic film to a basiloid container type load. The improvement comprises a roping device that gathers the plastic film into an elongated continuous band engageable on the basiloid container in the required configuration.Type: GrantFiled: April 21, 1988Date of Patent: February 28, 1989Assignee: Liberty Industries, Inc.Inventors: Larry L. Casteel, Robert L. Bowlin, Sr.