Patents by Inventor Maurice Victor Dupuis

Maurice Victor Dupuis 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).

  • Carbon brush assembly
    Patent number: 3970882
    Abstract: An electrically conductive helical spring has a series of closely spaced, inversely extending inner turns which receive and retain a mounting projection on a carbon brush to maintain excellent electrical continuity between the brush and the spring and to maximize the active length of the spring within the dimensional limitations of its normal mounting space.
    Type: Grant
    Filed: November 28, 1973
    Date of Patent: July 20, 1976
    Inventors: Maurice Victor Dupuis, Frederick William Hohman