Patents by Inventor Donald F. Hamill

Donald F. Hamill 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).

  • Method for diagnosing faults in electronic fuel control systems
    Patent number: 4557141
    Abstract: A method of troubleshooting, with a test set, an electronic fuel control system in an aircraft includes disconnecting the electronic engine control after mechanical tests have verified that the faults do not exist in the hydromechanical unit or associated mechanical parts. The test set then delivers signals to the circuits of the fuel control system one at a time to uniquely and specifically identify the fault. With this method, the engine can be tested when it is in its static condition.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: December 10, 1985
    Assignee: Pratt & Whitney Canada Inc.
    Inventors: Roger Poirier, Donald F. Hamill