Patents Assigned to Guardian Hitch, Inc.
  • Tamper resistant trailer hitch
    Patent number: 5018759
    Abstract: A tamper resistant trailer hitch. The trailer hitch includes a body with a hitch ball receiving cavity therein and a conventional coupling mechanism. The hitch may be locked in a coupled position on the hitch ball or in an uncoupled position in which the ball receiving cavity is covered to provide tamper resistance. In a first embodiment, a side opening coupling configuration is used with the cover mounted on a rotating locking ring. In a second embodiment, a pivoting locking plate is mounted on the lower side of the hitch. In a third embodiment, a sliding locking plate is mounted on the lower side of the hitch.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: May 28, 1991
    Assignee: Guardian Hitch, Inc.
    Inventors: S. Leonard Villalon, James D. Olds, William H. Shoffner
  • Tamper resistant trailer hitch
    Patent number: 4925205
    Abstract: A tamper resistant trailer hitch. The trailer hitch includes a body with a hitch ball receiving cavity therein and a conventional coupling mechanism. The hitch may be locked in a coupled position on the hitch ball or in an uncoupled position in which the ball receiving cavity is covered to provide tamper resistance. In a first embodiment, a side opening coupling configuration is used with the cover mounted on a rotating locking ring. In a second embodiment, a pivoting locking plate is mounted on the lower side of the hitch. In a third embodiment, a sliding locking plate is mounted on the lower side of the hitch.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: May 15, 1990
    Assignee: Guardian Hitch, Inc.
    Inventors: S. Leonard Villalon, James D. Olds, William H. Shoffner