Patents by Inventor Roderick L. Shulver

Roderick L. Shulver 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).

  • Screw thread protection
    Patent number: 4692988
    Abstract: A method of protecting mating screw threads at least under tightening torques is described in which a dry lubricant such as molybdenum disulphide is applied to one screw thread, and a liquid lubricant is applied to the other screw thread. The screw threads are then tightened to the required torque value. When completely mated the leakage path will not be masked as a result of volatilization of any of the components of either lubricant.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: September 15, 1987
    Assignee: Nowsco Well Service (U.K.) Limited
    Inventors: Roderick L. Shulver, John Misselbrook, Robert Standen