Patents by Inventor John B. Haven

John B. Haven 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).

  • Multi-valve arc inlet for steam turbine
    Patent number: 6386829
    Abstract: A steam turbine has multiple valves for introducing steam into a steam turbine. Each of the input valves introduce steam flow around the entire the 360 degree arc. The set of nozzles are each divided into a plurality of chambers. Each set of chambers extends around the full arc of the turbine. Each set has a valve. The chambers are designed so that all valves are open when the turbine is running at maximum output. The chambers are sized such that valve throttling losses are minimized when the turbine is at its normal operating condition.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: May 14, 2002
    Assignee: Power Technology, Incorporated
    Inventors: Edward T. Vitone, Jr., John B. Haven, Michael R. Kolk
  • Turbine trip circuit
    Patent number: 4217617
    Abstract: The disclosure sets forth trip circuitry for a rotating shaft machine which includes redundant overspeed protection and means for testing the overspeed protection circuit while the machine remains in operation. Moreover, further protective circuitry is provided for detecting a failure in the speed sensing system. The overspeed protection and the speed sensing failure circuit are each connected to a relay system which may actuate a trip servo valve to a closed position.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: August 12, 1980
    Assignee: General Electric Company
    Inventors: Anthony J. Rossi, Richard E. Lundberg, Thomas A. Fancy, Donald F. Behringer, John B. Haven