Patents by Inventor Kurt Helm

Kurt Helm 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).

  • Hand-guided, mobile cleaning machine
    Patent number: 4942638
    Abstract: A hand-guided mobile cleaning machine particularly a scrubbing machine having a cleaning tool positioned between a rear roller drive assembly and a front roller steering assembly, the steering assembly being operated by a handle-bar mounted on the rear of the machine, the handle-bar being operatively coupled to the steering assembly by either a set of Bowden cables, a sprocket and chain arrangement, or a motor driven gear arrangement.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: July 24, 1990
    Assignee: Hako-Werke GmbH & Co.
    Inventor: Kurt Helm
  • Mobile wet cleaning machine
    Patent number: 4741069
    Abstract: A mobile wet cleaning machine contains a first tank for the cleaning fluid which is supplied to a drivable cleaning tool, and a second tank into which is passed, cleaning fluid taken up from the floor surface being cleaned, the second tank being in fluid communication with the cleaning tool either directly or through the first tank, to permit used cleaning fluid, after filtering in the second tank, to flow under the force of gravity from the second tank to the cleaning tool for reuse.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: May 3, 1988
    Inventors: Kurt Helm, Dieter Thiel