Patents by Inventor Kevin Lewi

Kevin Lewi 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).

  • Non-volatile over speed control system for wind turbines
    Patent number: 6265785
    Abstract: A method and apparatus for non-volatile overspeed protection is described. The present invention provides a method and apparatus for non-volatile overspeed detection to provide turbine rotational speed safety during a power outage. In one embodiment, aerodynamic braking is used to slow rotation of a rotor of the wind turbine. If an overspeed condition continues after application of aerodynamic braking, mechanical braking is used to reduce the rotational speed of the rotor. Power is supplied by a non-volatile power source to continue overspeed detection during a power outage. A low-pressure trigger valve is used to apply a mechanical brake when hydraulic pressure in the braking system falls below a predetermined threshold.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: July 24, 2001
    Assignee: Zond Systems, Inc.
    Inventors: Kevin Lewis Cousineau, Craig Leonard Christenson
  • Stand for holding a temporary electrical power meter
    Patent number: D418438
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: January 4, 2000
    Assignee: KB Manufacturing, Inc.
    Inventor: Kevin A. Lewis