Patents by Inventor Gerben van der Werf

Gerben van der Werf 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).

  • Escalator or travelator
    Patent number: 7854311
    Abstract: An escalator or travelator comprising a circulating step belt or panel belt. Each step or panel of a belt is provided on each side respectively with a supporting roller and a chain roller, which are guided on supporting roller rails and chain roller rails in forward travel and in return travel. Supporting roller return travel rails are adapted to support the supporting roller only partially.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: December 21, 2010
    Assignee: ThyssenKrupp Fahrtreppen GmbH
    Inventors: Gerben van der Werf, Frank Neerhut, Michael Tilkorn, Reiner Ludwig, Hartmuth Willnauer
  • ESCALATOR OR TRAVELATOR
    Publication number: 20090026038
    Abstract: An escalator or travelator comprising a circulating step belt or panel belt. Each step or panel of a belt is provided on each side respectively with a supporting roller and a chain roller, which are guided on supporting roller rails and chain roller rails in forward travel and in return travel. Supporting roller return travel rails are adapted to support the supporting roller only partially.
    Type: Application
    Filed: May 14, 2007
    Publication date: January 29, 2009
    Inventors: Gerben van der Werf, Frank Neerhut, Michael Tilkorn, Reiner Ludwig, Hartmuth Willnauer