Patents by Inventor Lawrence B. Bixby

Lawrence B. Bixby has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5143181
    Abstract: An apparatus wherein a base plate mounts a plurality of base plate tubes, each mounting stabilizer legs, wherein the stabilizer legs are provided to include leveling screws to provide leveling of the associated apparatus relative to an underlying support surface. A guide track including a gear rack is arranged to cooperate with a drive gear structure rotatable by use of a reversing electric motor to effect raising and lifting of an associated platform in cooperation with the drive gear structure with the gear rack. An extension guide track, including an extension gear rack, is arranged to be affixed longitudinally aligned with the gear rack structure to effect extension of effective length for raising and lowering of the associated platform.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: September 1, 1992
    Inventor: Lawrence B. Bixby
  • Patent number: 4512440
    Abstract: A rungless motorized ladder of a type having an elongated pole with a cable attached at the top thereof. At the bottom thereof, the cable is attached to a spool which is motorized. The spool is attached to a carriage having a place for receiving a person's feet. Foot controls are provided on such carriage for permitting persons utilizing the device to move the carriage up or down on the pole with a simple movement of one foot. Likewise, when the foot control is not being utilized, an automatic braking device is provided for holding the carriage securely in a stationary position.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: April 23, 1985
    Inventor: Lawrence B. Bixby