Patents by Inventor Michael Pechnyo

Michael Pechnyo 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).

  • Fire seal for valves
    Patent number: 4280522
    Abstract: A ball valve is disclosed having two seat rings on each side of the closure member. Each seat ring is operative independently of the other and each ring is sealed with respect to both the ball and with respect to the body independently of the other seat ring. One of the seat rings employes metallic fire resistant seals to seal with respect to both the body and the ball.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: July 28, 1981
    Assignee: Rockwell International Corporation
    Inventors: Michael Pechnyo, Herman H. Fowler