Patents by Inventor Leland A. Rupenthal

Leland A. Rupenthal 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).

  • Method and apparatus for grinding small cutting blades
    Patent number: 4267669
    Abstract: Disclosed herein is a method and apparatus for clamping and grinding cutting blades having an arcuate shank portion. The cutting blades are held in clamps having one fixed and one movable jaw, with the fixed jaw having a curved surface which interfits with the arcuate shank portion and fulcrums the blade about the oppositely located movable jaw to hold the blade against a rest. The jaws are mounted on a rotary work table.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: May 19, 1981
    Assignee: Spencer C. Schantz
    Inventors: Spencer C. Schantz, Leland A. Rupenthal