Patents by Inventor Olaf Wurzler

Olaf Wurzler 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).

  • Patent number: 5117960
    Abstract: An escalator or moving walkway handrail is driven by a pair of linear belts which engage opposite sides of the handrail along the return path of travel thereof. The belt that engages the underside of the handrail is a powered drive belt, and the belt that engages the upper-side of the handrail is a pressure or reaction belt. Both belts are held against the handrail by a set of biased pressure rollers which urge the reaction belt against the handrail. The belts serve to convert line contact with the pressure rollers into area contact with the handrail thereby spreading out the driving forces acting upon the handrail.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: June 2, 1992
    Assignee: Otis Elevator Company
    Inventors: Hermann W. Ahls, Helmut Meyer, Olaf Wurzler