Patents by Inventor Jeffrey L. Dwiggins

Jeffrey L. Dwiggins 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).

  • Patent number: 5992468
    Abstract: A cable and conduit assembly comprises a conduit, such as coiled tubing, with a cable, such as an electrical power cable, longitudinally disposed therein. A plurality of elastic fingers, such as relatively short lengths of spring steel, extend from the cable and frictionally engaging an interior surface of the conduit to transfer the weight of the cable to the conduit. The elastic fingers are angled to permit installation of the cable within the conduit in a first longitudinal direction and to prevent movement of the cable within the conduit in a second longitudinal direction.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 30, 1999
    Assignee: Camco International Inc.
    Inventor: Jeffrey L. Dwiggins
  • Patent number: 5988286
    Abstract: A cable anchor for preventing longitudinal movement of a cable within a conduit to transfer the weight of the cable to the conduit, comprises a housing connectable to the cable. An arm member is connected to the housing and is movable from a retracted position to an extended position in gripping contact with an interior surface of the conduit to thereby transfer the weight of the cable to the conduit. A piston and cylinder assembly, operable from fluid pressure within the conduit, is connected to the housing and in operable contact with the arm member to extend the arm member.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: November 23, 1999
    Assignee: Camco International, Inc.
    Inventor: Jeffrey L. Dwiggins
  • Patent number: 5070940
    Abstract: Apparatus for deploying and energizing pumping apparatus including a submergible electric motor comprises a cable socket assembly and a cable connecting-and-sealing chamber assembly. The cable socket assembly has a housing that is connected at a lower end to an upper end of a housing of the cable connecting-and-sealing chamber assembly, the lower end of which is connected to a housing of the motor. The upper end of the housing of the cable socket assembly has an attachment portion provided with a breakaway connection to a weight-bearing cable. An electrical cable extends through the housing of the cable socket assembly to the housing of the cable connecting-and-sealing chamber assembly, which is divided by the body of a penetrator into upper and lower chambers. Sets of conductors in the chambers are connected, respectively, to the electrical cable and to the motor, and are interconnected with each other via feed-through elements (mandrels) associated with the body.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: December 10, 1991
    Assignee: Camco, Incorporated
    Inventors: Stephen E. Conner, Jeffrey L. Dwiggins, Earl B. Brookbank