Patents by Inventor Lawrence A. Wright

Lawrence A. Wright 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).

  • Polar wye crane
    Patent number: 4181231
    Abstract: A three point suspension crane for use on a circular track having the hoist machinery disposed on the crane at points proximate the engagement of the crane with the track.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: January 1, 1980
    Assignee: Paceco Division of Fruehauf Corporation
    Inventors: George F. Morrissey, Jr., Lawrence A. Wright
  • Anti-sway system for a spreader suspended from a crane
    Patent number: 3945504
    Abstract: An apparatus for arresting the pendulums and rotational sway motion of a suspended load relative to its lifting platform and utilizing a compensated reeving system. Rope drums are mounted on the ends of a shaft which is rotatably secured to a lifting spreader having a load attached thereto. Wire ropes are reelable from the rope drums and are secured at their ends to a feeder reel mounted on the lifting platform. Unreeling of the ropes from the drums due to sway of the load causes work to be done on a brake engaged with the shaft. The feeder reel gathers in and pays out the wire rope as the load is raised and lowered.
    Type: Grant
    Filed: March 11, 1974
    Date of Patent: March 23, 1976
    Assignee: Fruehauf Corporation
    Inventor: Lawrence A. Wright