Patents by Inventor David J. VanLangevelede

David J. VanLangevelede 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: 7331761
    Abstract: A pitch bearing and related method for wind electric turbines has an annularly-shaped first bearing ring connected with an associated wind turbine blade, and includes a first raceway groove. An annularly-shaped second bearing ring is connected with the rotor portion of the wind turbine, and includes a second raceway groove aligned with the first raceway groove. Rolling elements are positioned in the first and second raceway grooves to rotatably interconnect the two bearing rings. A gear segment is formed on one of the bearing rings, and is configured to engage a pitch drive portion of the wind turbine to pivot the blade axially between different pitch angles. The gear segment has an arcuate measure of less than 200 degrees to facilitate economical manufacture.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: February 19, 2008
    Assignee: Kaydon Corporation
    Inventors: Scott A. Hansen, David J. VanLangevelede