Patents by Inventor Robert A. Grunder

Robert A. Grunder 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).

  • Filament attachment method for dual filament halogen lamp having a common ground connection
    Patent number: 5239231
    Abstract: A connector for connecting the filaments of a dual filament halogen lamp to a common ground lead includes two provisions for clamping the connector to ends of the first and second filament and a central portion for connection to the common ground in a dual filament halogen lamp.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: August 24, 1993
    Assignee: Cooper Industries, Inc.
    Inventor: Robert A. Grunder
  • Pressure relief hole seal for a sealed-beam headlamp
    Patent number: 4302697
    Abstract: The invention relates to automobile sealed-beam headlamps in which a reflector and lens assembly are hermetically sealed by an epoxy resin. A pressure relief hole in the reflector eliminates the problem of excessive expansion and contraction of the atmosphere within the lamp such as would prevent forming a hermetic seal between the reflector and lens during the epoxy resin curing cycle. A deformable metal pellet forms a hermetic seal in the pressure relief hole. An epoxy resin is applied over the deformable metal seal and cured to produce a final permanent seal.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: November 24, 1981
    Assignee: Wagner Electric Corporation
    Inventors: Nickolas P. Demas, James E. Bair, Robert A. Grunder