Patents by Inventor Wolfang Peetz

Wolfang Peetz 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).

  • Apparatus for rock drill
    Patent number: 4883135
    Abstract: A rock drill for rotary and percussive stressing exhibits equally good or improved transport characteristics of driling dust for a smaller transport groove as compared with prior rock drills. In order to achieve this, a main transport groove having longitudinal profiles is formed, with an interrupted secondary transport groove integrated in the main transport groove, the transport ribs of which exhibit a greater angle of twist than the angle of twist of the main transport groove.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: November 28, 1989
    Assignee: Hawera Probst GmbH & Co.
    Inventors: Bernhard Moser, Wolfang Peetz, Hermann Hugger