Patents by Inventor Karlheinz Gehring

Karlheinz Gehring 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).

  • Bit of circular cross-section
    Patent number: 4159746
    Abstract: A cutting bit includes a bit tip and a shaft having a portion tapered toward the tip and having a reduced diameter between the tapered portion and the portion intended to be inserted in a holder. The bit tip has the shape of a body of revolution with convex generatrices.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: July 3, 1979
    Assignee: Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellschaft
    Inventors: Herwig Wrulich, Karlheinz Gehring, Alfred Zitz