Patents by Inventor Roland Grumbrecht

Roland Grumbrecht 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).

  • Elevator installation with a rocker device as support means fixing point and rocker device for use in an elevator installation
    Publication number: 20050045432
    Abstract: An elevator installation includes an elevator car, at least one guide rail for vertical guidance of the elevator car, and two support devices, such as ropes or belts, that support a counterweight at one side of the elevator car and underloop the elevator car. Each of the two support devices has one end at a fixing point at one side of the elevator car. A rocker device has two arms and is fastened to the guide rail to provide a rocking movement. Each of the support devices has an opposite end at a fixing point on an associated one of the and the rocking movement provides a length compensation in the case of unequal lengthening of the two support devices.
    Type: Application
    Filed: August 12, 2004
    Publication date: March 3, 2005
    Inventors: Ernst Ach, Roland Grumbrecht