Patents by Inventor Lothar Lenhardt

Lothar Lenhardt 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).

  • Plastic scoring tool
    Patent number: 4010542
    Abstract: A flat spring steel element has a handle portion, an offset shank portion, and a blade portion defining a symmetrically ground chisel edge. The edge is oriented at 45.degree. to the handle axis and each end of the chisel edge is ground to define two scoring tips. One of these tips has a 15.degree. forward rake angle when the tool handle is held perpendicular the surface to be scored, and the other tip has a similar rake angle when the tool handle is held at a slightly inclined position relative to such surface.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: March 8, 1977
    Assignee: The Fletcher-Terry Company
    Inventors: Philip E. Richardson, Lothar Lenhardt