Patents by Inventor Gilmore M. Spear

Gilmore M. Spear 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 tool
    Patent number: 4278370
    Abstract: A gear cutting tool is provided with a chip breaking surface along its front face for breaking chip formations between a side and bottom of a tooth slot as the tool advances through the slot in a cutting operation.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: July 14, 1981
    Assignee: The Gleason Works
    Inventor: Gilmore M. Spear
  • Cutting tools having compound cutting faces
    Patent number: 4260299
    Abstract: A gear cutting tool is provided with angular planar surfaces along its front face for providing first and second side rake angles on the tool. The angular planar surfaces do not rquire resharpening when the tool is resharpened.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: April 7, 1981
    Assignee: The Gleason Works
    Inventors: Arthur B. Ryan, Gilmore M. Spear