Patents by Inventor Maurice P. Lebourgh

Maurice P. Lebourgh 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).

  • Diamond drill bit with hemispherically shaped diamond inserts
    Patent number: 4858706
    Abstract: A rotary drill bit is provided which uses a plurality of hemispherically shaped diamond cutting elements, each having a cleaved, planar face. The diamonds are disposed in the bit such that the planar faces provide a plurality of knife-like cutting surfaces which fracture the formation being drilled and groove the fractured material.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: August 22, 1989
    Inventor: Maurice P. Lebourgh