Patents by Inventor Edward C. Grimes

Edward C. Grimes 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).

  • Recirculating linear gas drive system
    Patent number: 6694858
    Abstract: A system to provide mechanical energy to well-head equipment by directing pressurized gas existing in nearby pipelines to an engine. The engine is a linearly reciprocating piston in a closed cylinder driven by pressure differentials between the gas on either side of its piston, the differential being controlled by a switching valve which directs higher and lower pressured gas to the appropriate side of the piston, and which recirculates spent gas from the lower pressure side of the piston back to the pipeline. The system is a closed system, and avoids venting or flaring gas used in the engine.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: February 24, 2004
    Assignee: CDK Services Ltd.
    Inventor: Edward C. Grimes
  • Recirculating linear gas drive system
    Publication number: 20030121405
    Abstract: A system to provide mechanical energy to well-head equipment by directing pressurized gas existing in nearby pipelines to an engine. The engine is a linearly reciprocating piston in a closed cylinder driven by pressure differentials between the gas on either side of its piston, the differential being controlled by a switching valve which directs higher and lower pressured gas to the appropriate side of the piston, and which recirculates spent gas from the lower pressure side of the piston back to the pipeline. The system is a closed system, and avoids venting or flaring gas used in the engine.
    Type: Application
    Filed: August 29, 2002
    Publication date: July 3, 2003
    Inventor: Edward C. Grimes