Patents by Inventor Wayne L. Matus

Wayne L. Matus 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).

  • Sub assembly for a swivel
    Patent number: 4781359
    Abstract: A sub assembly for connecting a power swivel to a drill string. The assembly includes a telescopic sub having a preloaded spring. The telescopic sub has three discrete positions enabling it to travel in either direction from a normal position. This capability prevents thread damage for both when connecting and disconnecting a drill pipe to the drill string.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: November 1, 1988
    Assignee: National-Oilwell
    Inventor: Wayne L. Matus