Patents by Inventor Peter John David Matthews

Peter John David Matthews 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 and apparatus for controlling fuel flow to an engine
    Patent number: 7100378
    Abstract: A method for selectively interrupting fuel flow to an engine. The method comprises: in a normal mode, enabling a normal interruption signal for interrupting the fuel flow in response to a normal shutdown signal; and in an emergency mode, enabling an emergency interruption signal for interrupting the fuel flow in response to at least the normal shutdown signal and an emergency shutdown signal having transient characteristics. The normal shutdown signal has a given normal value and the emergency shutdown signal has a peak value substantially larger than the given normal value, whereby the fuel flow interrupting occurs faster in response to the emergency shutdown signal than in response to the normal shutdown signal.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: September 5, 2006
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Peter John David Matthews
  • Method and apparatus for controlling fuel flow to an engine
    Patent number: 7043896
    Abstract: An engine shutdown device for controlling a fuel shut-off valve to thereby selectively interrupt fuel flow to an engine. The device comprises a normal switch connected to the fuel shut-off valve and configured to respond to at least one of a normal shutdown signal and an emergency shutdown signal. The device further comprises an emergency switch connected to the fuel shut-off valve and configured to respond to the emergency shutdown signal.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: May 16, 2006
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Peter John David Matthews