Patents by Inventor John P. Petrowicz

John P. Petrowicz 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).

  • Windmill engine starting system with fluid driven motor and pump
    Patent number: 5845483
    Abstract: An engine starting system is provided for an aircraft gas turbine engine having a fan, compressor, combustor, high pressure turbine joined to the compressor by a core shaft, and a low pressure turbine joined to the fan by a fan shaft. A fluid assist pump is operatively joined to the fan shaft, and a fluid assist motor is operatively joined to the core shaft and the assist pump. The assist pump and motor are selectively engaged so that windmilling of the fan during aircraft flight powers the assist pump to in-turn power the assist motor to accelerate the core shaft to a minimum speed for allowing restarting of the engine in flight.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 8, 1998
    Assignee: General Electric Company
    Inventor: John P. Petrowicz