Patents by Inventor William M. Querfurth

William M. Querfurth 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).

  • Electric grass sickle-shear
    Patent number: 3971130
    Abstract: The single-toothed blade is pivoted at its rear end and driven at its middle section in arcuate reciprocation over the teeth of a fixed base plate by an electric motor. The blade and the slide of the crank-slide blade drive mechanism comprise the wear parts of the sickle-shear and as a subassembly is readily detachable from the crankpin for rapid replacement without the use of tools.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: July 27, 1976
    Assignee: Burgess Vibrocrafters, Inc.
    Inventors: William M. Querfurth, Michael A. Schwartz, Jon C. Wiltberger