Patents by Inventor Greg Lafferty

Greg Lafferty 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).

  • Fuel flow divider and ecology system for a gas turbine engine fuel flow control system
    Patent number: 9234465
    Abstract: A flow divider valve for a gas turbine engine fuel supply system is provided. The flow divider valve is configured, whenever fuel pressure at its inlet port is between a first predetermined pressure and a second predetermined pressure, to supply the fuel to a start nozzle manifold outlet port at a substantially constant flow rate, and to direct any fuel flow in excess of the substantially constant flow rate to a run nozzle manifold outlet port.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: January 12, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Paul Futa, Brad McRoberts, Greg Lafferty
  • Gas turbine engine fuel metering valve adapted to selectively receive fuel flow increase/decrease commands from the engine control and from the back-up fuel control
    Patent number: 9140190
    Abstract: A system provides “fail fixed” functionality and allows a user to manually manipulate fuel flow to a gas turbine engine in the unlikely event the primary control means is unavailable. The fuel metering unit includes a fuel metering valve, a flow increase valve, and a flow decrease valve. The flow increase valve and flow decrease valves are both in fluid communication with the fuel metering valve and are each adapted to selectively receive fuel flow commands from a primary fuel flow command source and from a secondary fuel flow command source. The flow increase and decrease valves are responsive to the fuel flow commands to selectively control the position of the fuel metering valve.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: September 22, 2015
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Larry Portolese, Gregory Kline, Paul W. Futa, David Tuttle, Brad McRoberts, Greg Lafferty
  • FUEL METERING VALVE FAIL-FIXED AND BACK-UP CONTROL SYSTEM
    Publication number: 20130327044
    Abstract: A system provides “fail fixed” functionality and allows a user to manually manipulate fuel flow to a gas turbine engine in the unlikely event the primary control means is unavailable. The fuel metering unit includes a fuel metering valve, a flow increase valve, and a flow decrease valve. The flow increase valve and flow decrease valves are both in fluid communication with the fuel metering valve and are each adapted to selectively receive fuel flow commands from a primary fuel flow command source and from a secondary fuel flow command source. The flow increase and decrease valves are responsive to the fuel flow commands to selectively control the position of the fuel metering valve.
    Type: Application
    Filed: June 6, 2012
    Publication date: December 12, 2013
    Applicant: Honeywell International Inc.
    Inventors: Larry Portolese, Gregory Kline, Paul W. Futa, David Tuttle, Brad McRoberts, Greg Lafferty
  • FUEL FLOW DIVIDER AND ECOLOGY SYSTEM FOR A GAS TURBINE ENGINE FUEL FLOW CONTROL SYSTEM
    Publication number: 20120261000
    Abstract: A flow divider valve for a gas turbine engine fuel supply system is provided. The flow divider valve is configured, whenever fuel pressure at its inlet port is between a first predetermined pressure and a second predetermined pressure, to supply the fuel to a start nozzle manifold outlet port at a substantially constant flow rate, and to direct any fuel flow in excess of the substantially constant flow rate to a run nozzle manifold outlet port.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Paul Futa, Brad McRoberts, Greg Lafferty