Patents by Inventor John R. Bruder

John R. Bruder 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).

  • Liquid level detector
    Patent number: 4848151
    Abstract: The present invention provides an automatic cut off switch which grounds the magneto-spark plug circuit of a small gasoline engine shutting the engine down when the quantity of lubricating oil within the sump falls below a predetermined quantity. The switch is operated by a balance beam float assembly housed within a protective shroud. The protective shroud acts to collect a relatively stable pool of oil, representative of the quantity of oil remaining in the sump, for activation of the balance beam float. Upon refilling of the oil sump the switch automatically resets thereby permitting re-start of the engine.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: July 18, 1989
    Assignee: Kelsey-Hayes Company
    Inventors: John R. Bruder, Gerald M. Sivulka, Leonard T. Tribe
  • Electrical cut off float switch
    Patent number: 4600820
    Abstract: The present invention provides an automatic cut off switch which grounds the magneto-spark plug circuit of a small gasoline engine shutting the engine down when the quantity of lubricating oil within the sump falls below a predetermined quantity. The switch is operated by a balance beam float assembly housed within a protective shroud. The protective shroud acts to collect a relatively stable pool of oil, representative of the quantity of oil remaining in the sump, for activation of the balance beam float. Upon refilling of the oil sump the switch automatically resets thereby permitting re-start of the engine.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: July 15, 1986
    Assignee: Kelsey-Hayes Company
    Inventors: John R. Bruder, Gerald M. Sivulka, Leonard T. Tribe