Patents by Inventor Alfred Giesau

Alfred Giesau 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).

  • Geared hub with freewheel, especially for wheel-chairs
    Patent number: 4727965
    Abstract: A geared hub for wheelchairs is specified, which besides at least one forward speed has an active hub brake and one reverse speed, and in which the braking and/or the reverse speed can be realized, from any of the forward speeds, through turning the driver backwards.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: March 1, 1988
    Assignee: Sanitatshaus Heinrich Oesterreich GmbH
    Inventors: Wolfgang Zach, Alfred Giesau