Patents by Inventor Louis H. Borden

Louis H. Borden 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).

  • Solenoid actuator and pulse drive
    Patent number: 4953616
    Abstract: A subsurface valve-actuator combination for well production tubing is described. The valve is urged to closed position but held open by a battery-operated latch of the actuator. A receiver-relay in the battery-actuator circuit maintains a switch closed to permit the latch to be energized as long as the receiver-relay receives an electromagnetic signal transmitted from the earth's surface. The latch is deenergized upon interruption of the signal and/or if the battery power is insufficient to energize the same.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: September 4, 1990
    Assignee: Develco, Inc.
    Inventors: Louis H. Borden, T. Charles Moore