Patents by Inventor Bobbie Thurman

Bobbie Thurman 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).

  • High pressure ball and seat valve with soft seal
    Patent number: 5297580
    Abstract: A valve seat for a ball valve of a positive displacement pump for producing fluid from a subsurface formation wherein the valve seat is provided by a valve assembly having a non-corrosive hollow metallic housing therein which may have an internal radial groove therein, the metallic housing having an elastomeric material forming a bonded insert which has an aperture therethrough and a chamfered face for seating the ball of the ball valve in sealing engagement with said bonded insert.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: March 29, 1994
    Inventor: Bobbie Thurman