Patents by Inventor Rodger E. Bloomfield

Rodger E. Bloomfield 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).

  • Attitude sensing electrical switch
    Patent number: 6396012
    Abstract: An attitude sensing electrical switch uses an electrically conductive powder as the switching medium. The powder has a particle size and shape that enables it to flow smoothly into and out of contact with electrical terminals mounted in the switch. Silver, gold, and copper powders with a particle size between one-hundred-forty and three-hundred microns perform effectively.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: May 28, 2002
    Inventor: Rodger E. Bloomfield
  • Catalytic converter having monolith with mica support means therefor
    Patent number: 3966419
    Abstract: Spacers formed from mica are disposed in a catalytic converter between a monolithic ceramic catalyst element and a metal converter housing. As the converter warms, the spacers increase the compressive loading on the catalyst element to support and immobilize it within the housing.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: June 29, 1976
    Assignee: General Motors Corporation
    Inventor: Rodger E. Bloomfield