Patents by Inventor Robert D. Denney

Robert D. Denney 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).

  • Adaptor for earth boring machine
    Patent number: 5228525
    Abstract: An adaptor assembly for an earth boring machine includes a thrust bearing housing removably attachable to the bulkhead plate of an earth boring machine surrounding the torque hub flange. A rear drive flange is attached to the torque hub and a front drive flange is mounted within the housing and carries a thrust bearing movable into and out of contact with the housing. The front drive flange has an extension which projects beyond the housing for attachment of an auger and boring head and is connected to the rear drive flange for rotational movement therewith and axial movement relatively thereof.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: July 20, 1993
    Assignee: Augers Unlimited, Inc.
    Inventors: Robert D. Denney, Michael D. Howman, Ronald E. Peacock