Patents by Inventor Richard W. Braithwaite

Richard W. Braithwaite 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).

  • Wedging assembly for borehole steering or branching
    Patent number: 4665995
    Abstract: A wedging assembly for steering or branching a borehole comprises a wedge defining the steering or branching angle, a locking device for locking the wedge in a desired position, and an actuator for actuating the locking device, the locking device including cooperable male and female locking members which are relatively moveable to cause an annular locking surface on the female member to lock firmly about the wall of the borehole.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: May 19, 1987
    Assignee: Encore Drilling Limited
    Inventors: Richard W. Braithwaite, Graham M. Smith, Norman W. Bellamy, Stephen Gergely