Patents by Inventor Lawrence E. Doty

Lawrence E. Doty 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: 5343942
    Abstract: A line protector protects a line which is strapped to a string of well tubing made up of sections that secure together by threaded couplings. The line protector includes a channel member having upper and lower ends, a base and two spaced apart sidewalls extending therefrom, defining a receptacle for receiving the line. An aperture is located in a central portion of the base between the upper and lower ends and configured for receiving an outer edge portion of the coupling. The channel member is strapped to the tubing with the base in contact with the tubing, with the outer edge portion of the coupling located in the aperture, and with the line located in the receptacle and having a portion in contact with the outer edge portion of the coupling. An adapter is strapped to the tubing between couplings for protection in a midsection area of the section of tubing.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: September 6, 1994
    Assignee: Baker Hughes Incorporated
    Inventors: David Del Serra, Lawrence E. Doty
  • Patent number: 4749034
    Abstract: A well pump assembly has a tube extending into the well for delivering water to a point below the pump to reduce the viscosity of the oil being pumped. The downhole motor that drives the pump is surrounded by a jacket. The tube that delivers the water extends to a point below the jacket to a cross-over member mounted to the lower end of the jacket, which directs the water upward and inward. The cross-over member also has passages that directs the production fluid upward and outward.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: June 7, 1988
    Assignee: Hughes Tool Company
    Inventors: Joseph E. Vandevier, Lawrence E. Doty