Patents by Inventor Curtis Eugene Poe

Curtis Eugene Poe 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).

  • Drill string make-up and break-out mechanism
    Patent number: 4030542
    Abstract: The drill pipe has a longitudinal section of smaller diameter and a pair of circumferentially separated grooves provided in an annular shoulder adjacent the smaller diameter portion of the pipe. Pipe-holding members to which a pawl is connected are circumferentially spaced adjacent the drill pipe. The pipe-holding members and pawls are simultaneously actuated so that the holding members fit around the smaller diameter portion of the pipe to support the pipe, and the pawls fit into the grooves in the pipe to permit either the breaking out of the pipe string or the making up of the pipe string, depending on which pawl is fitted into the groove.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: June 21, 1977
    Assignee: Ingersoll-Rand Company
    Inventors: Curtis Eugene Poe, Ronald Murray Cheers