Patents by Inventor John R. Thayer

John R. Thayer 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).

  • Protective helmet with dual adjustment illumination means
    Patent number: 4521831
    Abstract: A pair of lamps are mounted on either side of a protective helmet on indexing tables that permit each lamp to be independently directed at a different target. Each lamp table is slidably received within a base section so that the lamp can be easily removed from the helmet. A utility band passes between the two base sections and is held therebetween by gripping bars mounted in each base section. The band is adapted so that articles can be carried thereupon.
    Type: Grant
    Filed: January 18, 1984
    Date of Patent: June 4, 1985
    Inventor: John R. Thayer
  • Liquid level gauge illuminating system
    Patent number: 4217778
    Abstract: A Blackburn-type liquid level gauge which is observed by a TV camera has its frontal display structure illuminated in an area where light is not being transmitted through the gauge by light which is refracted away from the TV camera and reflected back onto the face of the display.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: August 19, 1980
    Assignee: The Babcock & Wilcox Company
    Inventor: John R. Thayer