Patents by Inventor Jimmie R. Thrift

Jimmie R. Thrift 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: 5072914
    Abstract: A lifting device powered by an impact wrench, specifically designed to raise a on car railway freight car coupler. The embodiment of the invention disclosed herein comprises:A base plate that houses a load bearing that a lifting screw rod fits into and rotates on. A top plate that houses a pilot bearing that the screw rod passes through and is held vertical by, thereby stabilizing load being lifted. Four stachion rods that connect the top and bottom plates forming the coupler lift body.A lifting block with carrying handle that threads onto the screw rod with an attached arm that engages the freight car coupler. The lifting block is powered up and down the screw rod by applying an impact wrench to the attached socket at top of same.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: December 17, 1991
    Inventors: Jimmie R. Thrift, Nass Hendley
  • Patent number: 5050751
    Abstract: A combination knuckle hanger and knuckle pin holder tool for holding the knuckle and knuckle pin of a railway coupler, in which the knuckle and knuckle pin may be held in position from the coupler during internal repairs. The tool has a fork shaped base portion which is adapted to be inserted into the casting holes of a railway coupler in order to releasably secure the tool to the coupler. A holder cup is rigidly attached to the curved portion of the fork for holding the knuckle pin during the repairs, and an angled knuckle hanging peg is also attached to the curved portion of the fork for hanging the knuckle during repairs, thereby allowing the knuckle and knuckle pin to be conveniently stored on the coupler during the repair of the internal coupler parts.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: September 24, 1991
    Inventors: Jimmie R. Thrift, Nass Hendley