Patents by Inventor Stephen A. Shade

Stephen A. Shade 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).

  • Flow control valve
    Patent number: 4825897
    Abstract: A fluid flow control device comprising a cylindrical housing adapted to be sealably positioned in a fluid flow system and having a passageway therethrough for the flow of fluid under pressure. The housing defines fluid entrance and exit ports with each port defining a spherical valve seat in the housing. A weighted spherical ball is positioned in the housing to float in the housing during normal fluid flow therethrough but seats in said spherical seats during adnominal fluid conditions in the housing.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: May 2, 1989
    Inventor: Stephen A. Shade