Patents by Inventor Randy L. Bernhardt

Randy L. Bernhardt 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).

  • Combined metal and plastic diaphragm assembly for a valve
    Patent number: 5402983
    Abstract: A sealing assembly for a valve with a rotary actuating shaft includes a top seal formed of a plastic diaphragm and a metal diaphragm, both of which are in sealing relationship with the actuating shaft. The metal diaphragm has a cantilever supported lip that is spring fitted into resiliently biased relationship with the actuating shaft. The sealing surface of the metal diaphragm provides a fire-tested seal in the event that the seal of the plastic seal is destroyed by fire.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: April 4, 1995
    Assignee: Xomox Corporation
    Inventor: Randy L. Bernhardt