Patents by Inventor Lucille A. E. Gotham

Lucille A. E. Gotham 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).

  • Direct acting hydraulic valve lifter
    Patent number: 5245958
    Abstract: An improved direct acting hydraulic valve lifter (DAHVL) has features including reduced dead oil storage with lower mass and faster filling, improved air venting, internal oil recirculation and targeted oil supply that combine to reduce the presence of air in the lifter. Foam filling and baffle reconfiguration are included among means for reducing stored oil volume which can also improve the follower cylinder support. Means for venting along the piston and cylinder of the lifter are shown. The various features combine to limit air intake and to more quickly expel air which does enter the lifter.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: September 21, 1993
    Assignee: General Motors Corporation
    Inventors: John J. Krieg, Lucille A. E. Gotham, Wayne S. Harris
  • Direct acting hydraulic valve lifter
    Patent number: 5119774
    Abstract: An improved direct acting hydraulic valve lifter (DAHVL) has features including reduced dead oil storage with lower mass and faster filling, improved air venting, internal oil recirculation and targeted oil supply that combine to reduce the presence of air in the lifter. Foam filling and baffle reconfiguration are included among means for reducing stored oil volume which can also improve the follower cylinder support. Means for venting along the piston and cylinder of the lifter are shown. The various features combine to limit air intake and to more quickly expel air which does enter the lifter.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: June 9, 1992
    Assignee: General Motors Corporation
    Inventors: John J. Krieg, Lucille A. E. Gotham, Wayne S. Harris