Patents by Inventor Joachim Rottschy

Joachim Rottschy 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).

  • Device to sand or polish floors and other surfaces
    Patent number: 5863241
    Abstract: A floor sanding or polishing device includes a housing that can be guided across a floor. The housing carries a motor which rotates a plate in a first direction about a vertical axis. The plate carries a plurality of sanding or polishing discs that are rotatable in the same second directions which are opposite to the first direction of rotation of the plate. The discs are displaceable radially relative to the plate by centrifugal force to bring a gear of the disc into engagement with a ring gear affixed to the housing, whereby the discs are rotated about their respective axes in response to rotation of the plate.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: January 26, 1999
    Assignee: Witte-Metallwaren GmbH
    Inventor: Joachim Rottschy