Patents by Inventor Martin J. Hillbrands

Martin J. Hillbrands 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).

  • Punch press machine
    Patent number: 5553525
    Abstract: A punch press machine for punching a series of holes in a cylindrical work piece has a main frame, a clamping fixture for holding the work piece, and a punch press frame having a horizontal moving punch and a die for receiving the punch. The clamping fixture is moveable relative to the main frame along a first horizontal axis and the punch press frame is moveable relative to the main frame along a second vertical axis for lowering the punch and die into a punching position with the punch on one side of the work piece and the die on the other side of the work piece.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: September 10, 1996
    Assignee: Solar Turbines Incorporated
    Inventors: Desmond Mailey, Jose J. Rodriguez, Jerry P. Fregoe, Curtis L. Stevens, Frank M. Dettmers, Sr., Glenn L. Brown, Gary L. Kitzer, James G. Miller, Martin J. Hillbrands, Carl F. Strebel, Thomas A. King