Patents by Inventor Hinrich Weyhausen

Hinrich Weyhausen 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).

  • Excavator having a swivel joint between the main arm and the jib
    Patent number: 3999670
    Abstract: An excavator comprising a main arm, a jib, a crank arm and a bucket. A swivel joint connects the main arm and the jib. The jib can be turned out of the plane of the main arm and thus be inclined sideways. Digging of an embankment at an oblique angle and digging road ditches with a gradient are thus permitted.
    Type: Grant
    Filed: March 8, 1968
    Date of Patent: December 28, 1976
    Inventor: Hinrich Weyhausen