Patents by Inventor Devon E. Tassen

Devon E. Tassen 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).

  • Windmill blade stalling and speed control device
    Patent number: 4352633
    Abstract: The windmill stalling and speed control device is mounted in the blade supporting hub of a windmill and is operative in response to blade rotation induced by a blade pitch control unit. The device includes a biasing assembly mounted to oppose blade rotation in at least one direction and a stage adjustment unit which operates to aid the biasing unit and increase the opposition to blade rotation when the windmill hub and blades reach and remain within predetermined speed ranges.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: October 5, 1982
    Inventor: Devon E. Tassen