Patents by Inventor Earl Pilgrim

Earl Pilgrim 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).

  • Bactrian rocker arm and engine using same
    Patent number: 7556004
    Abstract: An engine that includes two intake and two exhaust valves for each cylinder is equipped for single valve constant lift engine braking. The exhaust valves may be actuated in a conventional manner via a rotating cam and a rocker arm coupled to a bridge that spans between the pair of exhaust valves. Engine braking is accomplished by actuating a brake actuator to hold one of the exhaust valves partially open, while the other of the two exhaust valves is allowed to close. Seating velocity of the non-braking valve is limited by including a second actuator button, namely a valve seating actuator, on the rocker arm that engages the valve bridge above the non-braking valve as it moves toward its closed position when the brake actuator is actuated.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: July 7, 2009
    Assignee: Caterpillar Inc.
    Inventors: Stephen M. Wiley, Brian K. Garman, Earl A. Pilgrim, Scott A. Leman
  • Engine and method for operating an engine
    Patent number: 7415946
    Abstract: An engine includes a housing having a combustion chamber. The engine may also include a fuel injector for supplying fuel directly or indirectly to the combustion chamber. Additionally, the engine may include an engine-lubricant-supply system operable to discharge engine lubricant onto the fuel injector.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 26, 2008
    Assignee: Caterpillar Inc.
    Inventors: Jack Merchant, Paul Olsen, Scott Wallington, Thomas Meyer, II, Earl Pilgrim
  • Bactrian rocker arm and engine using same
    Publication number: 20080087239
    Abstract: An engine that includes two intake and two exhaust valves for each cylinder is equipped for single valve constant lift engine braking. The exhaust valves may be actuated in a conventional manner via a rotating cam and a rocker arm coupled to a bridge that spans between the pair of exhaust valves. Engine braking is accomplished by actuating a brake actuator to hold one of the exhaust valves partially open, while the other of the two exhaust valves is allowed to close. Seating velocity of the non-braking valve is limited by including a second actuator button, namely a valve seating actuator, on the rocker arm that engages the valve bridge above the non-braking valve as it moves toward its closed position when the brake actuator is actuated.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 17, 2008
    Inventors: Stephen M. Wiley, Brian K. Garman, Earl A. Pilgrim, Scott A. Leman
  • Engine and method for operating an engine
    Publication number: 20070251470
    Abstract: An engine includes a housing having a combustion chamber. The engine may also include a fuel injector for supplying fuel directly or indirectly to the combustion chamber. Additionally, the engine may include an engine-lubricant-supply system operable to discharge engine lubricant onto the fuel injector.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 1, 2007
    Inventors: Jack Merchant, Paul Olsen, Scott Wallington, Thomas Meyer, Earl Pilgrim