James W Stegmaier, 785747 Mccarthy Ct, Hamilton, OH 45069

6484508, Nov 26, 2002

Jul 5, 2001

09/899714

Mark Stephen Rocklin - Wyoming OH
Nicholas Damlis - Cincinnati OH
Curtis Lee Brown - Cincinnati OH
Robert Paul Coleman - Fairfield OH
James William Stegmaier - West Chester OH

General Electric Company - Schenectady NY

F02C 330

60775

A method is provided for operating a gas turbine engine that includes a high pressure compressor and a water injection apparatus for injecting water into a flow of the engine upstream from the high pressure compressor. The method includes the steps of operating the engine without injecting water into the gas flow of the engine, injecting water at a first flow rate into the gas flow for power augmentation once engine full power is about reached, and injecting water into the engine at an increased second flow rate for evaporative cooling of engine components downstream from the high pressure compressor.

6681556, Jan 27, 2004

May 8, 2002

10/141653

Jagdish Dullabhbhai Mistry - Cincinnati OH
James William Stegmaier - West Chester OH

General Electric Company - Schenectady NY

F02C 7232

60 39094, 60739

A combustor for a gas turbine engine includes a fuel delivery system that uses circumferential fuel staging. The fuel delivery system includes a plurality of fuel supply rings and a backpurge sub-system. The fuel supply rings are arranged concentrically at various radial distances to supply fuel to a combustor through a plurality of combustor manifolds and pigtails. The backpurge system uses high temperature and high pressure combustor air to purge fuel from non-flowing fuel supply rings, combustor pigtails, and combustor manifolds. Additionally, the fuel delivery system includes at least two orifices to minimize pressure decays during filling stages.

6983605, Jan 10, 2006

Apr 7, 2000

09/545554

Richard B. Hook - Sharonville OH, US
John M. Davidson - Pleasant Plain OH, US
Eric J. Kress - Loveland OH, US
James W. Stegmaier - West Chester OH, US
Paul V. Heberling - Lawrenceburg IN, US
David B. Patterson - Mason OH, US

General Electric Company - Schenectady NY

F02C 3/30

60775, 60 3955, 60737, 60747

A gas turbine engine includes a combustor system including a lean premix combustor and a water delivery system. The combustor is operable with a fuel/air mixture equivalence ratio less than one and the water delivery system is configured to supply at least one of water or steam to the gas turbine engine such that either the water or the steam is injected into the combustor to control emissions generated by the combustor. As a result, nitrous oxide emissions for specified turbine operating power levels are lowered.

7007484, Mar 7, 2006

Jun 6, 2003

10/456409

James William Stegmaier - West Chester OH, US
Narendra Joshi - Cincinnati OH, US

General Electric Company - Schenecady NY

F02C 1/02

60772, 60728

A method for operating a gas turbine engine including a compressor, combustor, and turbine is provided that includes channeling compressed airflow from the compressor to a heat exchanger having a working fluid circulating within, channeling the working fluid from the heat exchanger to a chiller, extracting energy from the working fluid to power the chiller, and directing airflow entering the gas turbine engine through the inlet chiller such that the temperature of the airflow is reduced prior to the airflow entering the compressor.

7229246, Jun 12, 2007

Sep 30, 2004

10/955079

Farshad Ghasripoor - Scotia NY, US
Shorya Awtar - Clifton Park NY, US
Norman Arnold Turnquist - Sloansville NY, US
Biao Fang - Clifton Park NY, US
James William Stegmaier - West Chester OH, US
Glenn Herbert Nichols - Mason OH, US
James Charles Przytulski - Fairfield OH, US
Kurt Grover Brink - Mason OH, US
Richard Cohen Lykins - Kettering OH, US
Jeffrey Reid Thyssen - Delmar NY, US
Mahmut Faruk Aksit - Istanbul, TR

General Electric Company - Niskayuna NY

F01D 11/20
F04D 29/08

4151733, 277413, 4151742

A compliant seal assembly for a rotating machine is provided. The seal assembly includes a static member, a movable member and a biasing member. The static member is rigidly fixed to the machine at its fore and aft ends. The movable portion has a first sealing surface configured to seal against a rotating member and a rear surface, which may be exposed to a fluid pressure to urge the first sealing surface toward a sealing position with the rotating member. The static and the movable members further include sealing surfaces at their fore, aft and end faces to seal against leakage of gas between the static and the movable members. The biasing member is configured to support the movable member on the static member and to urge the movable member away from the sealing position so as to reduce force on the rotating member during contact of the rotating member with the first sealing surface of the movable member.

7942008, May 17, 2011

Oct 9, 2006

11/539651

Narendra Digamber Joshi - Cincinnati OH, US
Lautaro Aspiazu Montgomery - Mason OH, US
James William Stegmaier - West Chester OH, US

General Electric Company - Schenectady NY

F02C 1/00
F02G 1/00

60772, 60 395, 60 3952

A method for operating a power plant to facilitate reducing emissions, wherein the power plant includes a gas turbine engine assembly and a carbon dioxide (CO) separator. The method includes increasing an operating pressure of exhaust gas discharged from the gas turbine engine assembly, separating substantially all the COentrained within the gas turbine engine utilizing the COseparator to produce a COlean airstream, reducing the operating temperature of the COlean airstream, and utilizing the cooled COlean airstream to facilitate reducing an operating temperature of air entering the gas turbine engine assembly.

8104259, Jan 31, 2012

Apr 8, 2011

13/082960

Narendra Digamber Joshi - Cincinnati OH, US
Lautaro Aspiazu Montgomery - Mason OH, US
James William Stegmaier - West Chester OH, US

General Electric Company - Schenectady NY

F02G 1/00
F02G 3/00

60 395, 60728

A method for operating a power plant to facilitate reducing emissions, wherein the power plant includes a gas turbine engine assembly and a carbon dioxide (CO) separator. The method includes increasing an operating pressure of exhaust gas discharged from the gas turbine engine assembly, separating substantially all the COentrained within the gas turbine engine utilizing the COseparator to produce a COlean airstream, reducing the operating temperature of the COlean airstream, and utilizing the cooled COlean airstream to facilitate reducing an operating temperature of air entering the gas turbine engine assembly.

6405524, Jun 18, 2002

Aug 16, 2000

09/640356

Jagdish Dullabhbhai Mistry - Cincinnati OH
James William Stegmaier - West Chester OH

General Electric Company - Schenectady NY

F02C 722

60 39091, 60739

A combustor for a gas turbine engine includes a fuel delivery system that uses circumferential fuel staging. The fuel delivery system includes a plurality of fuel supply rings and a backpurge sub-system. The fuel supply rings are arranged concentrically at various radial distances to supply fuel to a combustor through a plurality of combustor manifolds and pigtails. The backpurge system uses high temperature and high pressure combustor air to purge fuel from non-flowing fuel supply rings, combustor pigtails, and combustor manifolds. Additionally, the fuel delivery system includes at least two orifices to minimize pressure decays during filling stages.