Patents by Inventor Harry E. Kidder

Harry E. Kidder 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).

  • Cutting elements for drill bits
    Patent number: T970002
    Abstract: a cutting element for mounting in a rolling cone cutter of a rock drill bit has a notch in the periphery of its base for improved retention of the cutting element in the rolling cone cutter. The longitudinal axis of the notch is essentially transverse to the direction of insertion of the cutting element into the rolling cone cutter. To maximize the effectiveness of the notch in improving retention of the cutting element, preferably the notch is sharp lipped.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: May 2, 1978
    Assignee: Smith International, Inc.
    Inventors: Harry E. Kidder, Robert F. Evans