Patents by Inventor Bradley Eugene Dunham

Bradley Eugene Dunham 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).

  • Method and apparatus for mounting vapor shield in vacuum interrupter and vacuum interrupter incorporating same
    Patent number: 6417473
    Abstract: The tubular vapor shield of a vacuum interrupter is secured to the ceramic by a shield mount which includes a split ring seated in a circumferential groove formed in the inner surface of the ceramic. The tubular vapor shield is secured to the split ring by a connection which includes a circumferential flange brazed to the shield and a braze ring which is wedged in an annular gap between the flange and the vapor shield and which melts when heated in a vacuum oven to braze the split ring to the vapor shield and the flange. In another embodiment, the flange has a radial outward rim which seats on the split ring. In an additional embodiment, the connection between the split ring and the vapor shield includes a circumferential shield groove in the outer surface of the vapor shield in which the split ring is also seated and optionally secured by a braze.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: July 9, 2002
    Assignee: Eaton Corporation
    Inventors: Stephen David Mayo, Paul Graham Slade, Benjamin Alex Rosenkrans, Dale Lowell Burmingham, Bradley Eugene Dunham