Patents by Inventor Donald N. Berube

Donald N. Berube 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).

  • Bellows core and method and apparatus for fabrication thereof
    Patent number: 4924756
    Abstract: A metal bellows core is comprised of a plurality of resilient annular metal diaphragm members which are brazed together. A method for fabricating a metal bellows core is comprised of steps including brazing the metal diaphragm members together simultaneously in a furnace. An apparatus for fabricating a metal bellows core is comprised of means for positioning, coaxially aligning and compressing the diaphragm members and brazing filler material members for brazing.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: May 15, 1990
    Assignee: EG&G Sealol, Inc.
    Inventors: Donald N. Berube, Amitava Datta