Patents by Inventor Gerhard Zawidzki

Gerhard Zawidzki 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).

  • Tangential reversible cutting blade
    Patent number: 6966729
    Abstract: A tangential reversible cutting blade, comprising: a prismatic body which is bordered by two opposed, identically shaped first surfaces and four identically shaped, interposed lateral surfaces, four equal-length main cutting edges on each of the first surface which are defined with one lateral face each, a raised web on each lateral surface with the four webs being symmetrical with a central plane through the lateral surfaces, a through mounting bore coaxial with the axis through the centres of the first surfaces, metal-cutting faces on the lateral surfaces which are defined by fillets adjacent to the main cutting edges on either side of the associated web, and cutting-tool flanks on the first surfaces which are defined by a spherical surface shape of the first surfaces adjacent to the main cutting edges.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: November 22, 2005
    Assignee: Fette GmbH
    Inventors: Gerhard Dehn, Achim Engfer, Uwe Schunk, Gerhard Zawidzki
  • Tangential reversible cutting blade
    Publication number: 20040013478
    Abstract: A tangential reversible cutting blade, comprising:
    Type: Application
    Filed: July 8, 2003
    Publication date: January 22, 2004
    Inventors: Gerhard Dehn, Achim Engfer, Uwe Schunk, Gerhard Zawidzki