Patents by Inventor Jon Wren

Jon Wren 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).

  • No-bounce tailgate assembly
    Patent number: 5249843
    Abstract: In a tailgate assembly, a locking mechanism for preventing rotation of the assembly in response to a torque generated by a moment arm of the tailgate assembly and a force resulting from the jolting of the truck as it travels over rough terrain.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: October 5, 1993
    Inventors: LeRoy G. Hagenbuch, Richard Keller, Jon Wren
  • No-bounce tailgate assembly
    Patent number: 5174632
    Abstract: In a tailgate assembly, a locking mechanism for preventing rotation of the assembly in response to a torque generated by a moment arm of the tailgate assembly and a force resulting from the jolting of the truck as it travels over rough terrain.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: December 29, 1992
    Assignee: Philippi-Hagenbuch, Inc.
    Inventors: LeRoy G. Hagenbuch, Richard Keller, Jon Wren