Patents by Inventor Wilfried Guthoff

Wilfried Guthoff 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).

  • Excavating machine with position indication of its work implement
    Patent number: 4277899
    Abstract: An excavating machine has an indicator (60, 64) showing the position of the boom and dipper stick mounted back hoe (29) to the machine operator. A guide rod (33) is coupled to the hoe and to a swivel joint (34) on the machine to drive the indicator. The angle of the hoe may be shown by an additional indicator (83, 84).
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: July 14, 1981
    Assignee: Friedrich Wilh. Schwing GmbH
    Inventor: Wilfried Guthoff