Patents by Inventor Edward E. Seay

Edward E. Seay 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).

  • Seismic shut-off valve
    Patent number: 4565208
    Abstract: In a seismic actuated shut-off valve, a valve seat is placed between, and in communication with an inlet and outlet. A circular track is located above the valve seat and a plurality of balls ride in the track. A specifically shaped obstruction on the track causes a ball to leave the track at a predetermined seismic level, the ball falling onto the valve seat to shut off the gas flow through the valve. A reset rod can be extended through the valve seat in order to push the ball off of the valve seat and back onto the track in order to reopen the valve.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: January 21, 1986
    Inventors: David E. Ritchie, Edward E. Seay
  • Seismic gas shut-off valve
    Patent number: D287871
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: January 20, 1987
    Inventors: David E. Ritchie, Edward E. Seay