Patents Assigned to Liberty Industries
  • Patent number: 5718394
    Abstract: 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: Grant
    Filed: July 14, 1993
    Date of Patent: February 17, 1998
    Assignee: Liberty Industries, Inc.
    Inventors: Robert B. Simons, Russell Parish
  • Patent number: 5657941
    Abstract: 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: Grant
    Filed: November 20, 1995
    Date of Patent: August 19, 1997
    Assignee: Liberty Industries, Inc.
    Inventors: Robert Simons, Russell Parish
  • Patent number: 5575138
    Abstract: 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: Grant
    Filed: June 29, 1995
    Date of Patent: November 19, 1996
    Assignee: Liberty Industries
    Inventors: Lawrence P. Reigrut, Robert Simons
  • Patent number: 5572855
    Abstract: 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: Grant
    Filed: January 9, 1995
    Date of Patent: November 12, 1996
    Assignee: Liberty Industries
    Inventors: Lawrence P. Reigrut, Robert Simons
  • Patent number: 5522207
    Abstract: 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: Grant
    Filed: November 10, 1994
    Date of Patent: June 4, 1996
    Assignee: Liberty Industries
    Inventor: Charles Keip
  • Patent number: 5505042
    Abstract: 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: Grant
    Filed: March 29, 1993
    Date of Patent: April 9, 1996
    Assignee: Liberty Industries
    Inventor: Charles Keip
  • Patent number: 5285891
    Abstract: 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: Grant
    Filed: June 1, 1992
    Date of Patent: February 15, 1994
    Assignee: Liberty Industries
    Inventor: Charles P. Keip
  • Patent number: 5020300
    Abstract: 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: Grant
    Filed: July 23, 1990
    Date of Patent: June 4, 1991
    Assignee: Liberty Industries, Inc.
    Inventor: Larry Casteel
  • Patent number: 4991381
    Abstract: 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: Grant
    Filed: June 7, 1989
    Date of Patent: February 12, 1991
    Assignee: Liberty Industries
    Inventor: Robert B. Simons
  • Patent number: 4955181
    Abstract: 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: Grant
    Filed: October 27, 1989
    Date of Patent: September 11, 1990
    Assignee: Liberty Industries
    Inventor: Larry Casteel
  • Patent number: 4807427
    Abstract: 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: Grant
    Filed: April 21, 1988
    Date of Patent: February 28, 1989
    Assignee: Liberty Industries, Inc.
    Inventors: Larry L. Casteel, Robert L. Bowlin, Sr.