Patents by Inventor Sammy DeWitt Thrash

Sammy DeWitt Thrash 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).

  • Oil well production system
    Patent number: 3970143
    Abstract: A number of oil wells each have a crude oil processing unit located at close to the wellhead. The clean oil produced from each processing unit is connected to supply the clean oil as hydraulic power oil and to sales. The sales output conduits are manifolded. The control system normally creates clean oil, which is excess over that required for pumping, to sales. The control system alternatively withdraws clean oil from the manifold if a well temporarily does not produce enough clean oil for pumping.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: July 20, 1976
    Assignee: Combustion Engineering, Inc.
    Inventor: Sammy DeWitt Thrash