Patents Assigned to Liberty Industries, Inc.
  • Web tensioning device
    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
  • Web tensioning device
    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
  • Wipe down method for stretch wrapping devices
    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
  • Stretch wrapping roping apparatus
    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.