Patents by Inventor Wilfried Wiher

Wilfried Wiher 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).

  • Variable geometry gas turbine engine fuel and guide vane control
    Patent number: 4244181
    Abstract: A recuperated gas turbine engine fuel and guide vane control which controls fuel flow and guide vane position during engine idling and acceleration to minimize fuel consumption while providing fast acceleration for a ground vehicle.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: January 13, 1981
    Assignee: The Garrett Corporation
    Inventors: Wilfried Wiher, Geoffrey D. Woodhouse, George B. Mattson, Harvey B. Jansen, Robert A. Hatch, Leon D. Lewis
  • Electrohydraulic proportional actuator apparatus
    Patent number: 4177713
    Abstract: An electrohydraulic proportional actuator for converting an electrical input signal to proportional mechanical output. Fluid power may be derived from pressurized fuel or lubricating oil of an associated engine. The actuator may be used to drive any engine function requiring modulated control. The mechanical output is proportional to the electrical input. The actuator includes mechanical feedback to linearize the response function, thus eliminating the need for closed loop operation of the system in which the actuator is used. Both linear and rotary actuators are disclosed in various embodiments. Each type is capable of operation with either a proportional solenoid and valve or a force rebalance solenoid and valve.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: December 11, 1979
    Assignee: The Garrett Corporation
    Inventors: Leon D. Lewis, Wilfried Wiher, Warde L. Parker
  • Electrohydraulic proportional actuator apparatus
    Patent number: 4044652
    Abstract: An electrohydraulic proportional actuator for converting an electrical input signal to proportional mechanical output. Fluid power may be derived from pressurized fuel or lubricating oil of an associated engine. The actuator may be used to drive any engine function requiring modulated control. The mechanical output is proportional to the electrical input. The actuator includes mechanical feedback to linearize the response function, thus eliminating the need for closed loop operation of the system in which the actuator is used. Both linear and rotary actuators are disclosed in various embodiments. Each type is capable of operation with either a proportional solenoid and valve or a force rebalance solenoid and valve.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: August 30, 1977
    Assignee: The Garrett Corporation
    Inventors: Leon David Lewis, Wilfried Wiher, Warde L. Parker