Patents by Inventor Robert W. Earl

Robert W. Earl 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).

  • Throttle linkage control
    Patent number: 4401077
    Abstract: A differential throttle linkage control for controlling the flow of fuel to an engine receives a main input from the throttle lever, and a second input from a trim actuator motor through a movable portion of a programmed split cam. The throttle control algebraically sums the inputs to produce a single output operably connected to the fuel metering device of the engine. The programmed split cam modifies or neutralizes the effects of the trim input through selected ranges of the throttle lever input stroke.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: August 30, 1983
    Assignee: The Garrett Corporation
    Inventor: Robert W. Earl
  • Variable authority trim mixer
    Patent number: 4362067
    Abstract: A mechanical variable authority trim mixer for controlling the flow of fuel to an engine receives a main input from the throttle lever and a second input from a trim actuator motor. The trim mixer combines the inputs to produce a single output operably connected to the fuel metering control of the engine. A programmed cam modifies or neutralizes the effects of the trim input through selected ranges of the main throttle input stroke.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: December 7, 1982
    Assignee: The Garrett Corporation
    Inventors: Robert W. Earl, William H. McCormack