Patents by Inventor Peter Landtwing

Peter Landtwing 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).

  • Quick-clamping device operated by centrifugal force, for planing blades
    Patent number: 5133394
    Abstract: A centrifugally operated clamping device for clamping a reversible blade insert in a planing tool ensures positive engagement between the clamp and the blade. The clamping device includes a clamping wedge which has an inverted T-shaped cross-section and is positioned in a similarly configured groove in the tool. The wedge is biased relative to the bottom of the groove so that the clamp will be easily disconnected from the blade.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: July 28, 1992
    Inventor: Peter Landtwing
  • Quick-clamping device operated by centrifugal force, for planing blades
    Patent number: 5076334
    Abstract: A centrifugally operated clamping device for clamping a reversible blade insert in a planing tool ensures positive engagement between the clamp and the blade. The clamping device includes a clamping wedge which has an inverted T-shaped cross-section and is positioned in a similarly configured groove in the tool. The wedge is biased relative to the bottom of the groove so that the clamp will be easily disconnected from the blade.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: December 31, 1991
    Inventor: Peter Landtwing