Patents by Inventor John G. Derringer

John G. Derringer 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: 4627391
    Abstract: An engine valve train system for selectively effecting operation of a pair of side by side valves of a cylinder and to effect deactivation of one of the valves in the pair during predetermined modes of engine operation includes first and second rocker arms pivotably supported on a hollow rocker shaft which in turn is suitably supported for pivotable movement between an operative position and an idle or inoperative position and which is connected to a source of pressurized hydraulic fluid. The first rocker arm is adapted to be driven by an actuator to effect opening and closing movement of one of the valves.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: December 9, 1986
    Assignee: General Motors Corporation
    Inventor: John G. Derringer
  • Patent number: 4412458
    Abstract: The parking brake mechanism includes a simplified equalizer having one end pivotally attached to a bracket on a part of the vehicle underbody. The other end of the equalizer lever receives the end of the cable from the parking brake foot pedal or hand lever. The cable end has a threaded member thereon which extends through an aperture in the end of the equalizer lever. An adjuster lock nut is attached to the threaded member to provide adjustment for the entire parking brake mechanism at this point. The equalizer lever is slightly V-shaped so that the center portion extends toward the rear of the vehicle. A parking brake cable extending from the left rear brake passes around the lever at the center portion, is retained on the lever by a lanced tab portion made from part of the lever, and then extends to the right rear parking brake. This provides a simplified yoke arrangement which eliminates parts and has a simpler adjusting mechanism than devices earlier used.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: November 1, 1983
    Assignee: General Motors Corporation
    Inventor: John G. Derringer