Patents by Inventor Helmut Hasenpath

Helmut Hasenpath 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).

  • Mechanical sweepers
    Patent number: 4160303
    Abstract: The specification discloses a mechanical sweeper having a roller brush which throws rubbish forward in the direction of travel into a collecting hopper. The hopper is mounted in a fork carried by a lifting arm and the arrangement is such that actuation of the lifting arm does not cause tipping of the hopper. Separate means are provided for tipping the hopper at any desired moment during lifting.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: July 10, 1979
    Inventors: Helmut Hasenpath, Hargen Rohde