Patents by Inventor Peter A. Lehnhoff

Peter A. Lehnhoff 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).

  • Digger tooth arrangement
    Patent number: 4642920
    Abstract: The arrangement of the digger teeth of an excavating bucket of a bucket wheel excavator is described, wherein the excavating bucket is equipped with replaceable corner, center and side teeth of identical construction and dimensions, but which are mounted with respect to the upper edge of the excavating bucket in different angular relationships. The configuration of a digger tooth for use in this arrangement is also included.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: February 17, 1987
    Assignee: Lehnhoff Hartstahl GmbH & Co.
    Inventor: Peter A. Lehnhoff