SANJAY MARC CORREA
Pilots at Lamplighter Rd, Schenectady, NY

6016669, Jan 25, 2000

Nov 30, 1998

9/201380

Sanjay Marc Correa - Niskayuna NY
Alan S. Feitelberg - Niskayuna NY

General Electric Company - Schenectady NY

C03B 23043

65109

An apparatus for applying heat to a rotatable workpiece is disclosed. A rotating lathe is provided for mounting a workpiece, for example a quartz tube, thereto so as to enable rotation of the workpiece. At least one translatable burner is coupled to a fuel source and an oxygen source for producing a flame. The burner is directed such that flame impinges upon the workpiece mounted on the rotating lathe. A first pulse control valve is coupled to and positioned between the translatable burner and the fuel source. A second pulse control valve is coupled to and positioned between the translatable burners and the oxygen course. The first and second pulse control valves are pulsed at a predetermined frequency to prevent the formation of a steady thermal boundary layer about the workpiece to improve the rate of heat transfer between the flame and the workpiece.

6339925, Jan 22, 2002

Nov 2, 1998

09/184684

Stephen Lan-Sun Hung - Waterford NY
Jeffery Alan Lovett - Jupiter FL
Kenneth Winston Beebe - Galway NY
Martin Bernard Cutrone - Cape Coral FL
Sanjay Marc Correa - Niskayuna NY

General Electric Company - Schenectady NY

F02C 7228

60 3906, 60723, 60737, 431 7

A hybrid combustor, for providing stable high and low levels of operation while minimizing emissions of NOx, CO, and UHCs, includes a casing having a chamber, a catalytic combustor disposed in the chamber, and a non-premixed combustor disposed in the chamber. The hybrid combustor may comprise a fuel nozzle comprising a casing having a chamber, and a body supportable in the chamber to define a passageway between the body and the casing. The passageway has an inlet for receiving a stream of air and an outlet for discharging a stream of fuel and air, and the body includes a tapering downstream portion. Desirably, flow separation of the fuel and air mixture from the body (i. e. , recirculation of the fuel and air mixture in the passageway and/or chamber) is inhibited whereby a generally uniform fuel and air mixture is provided.

5460002, Oct 24, 1995

May 27, 1994

8/250633

Sanjay M. Correa - Schenectady NY

General Electric Company - Schenectady NY

F23R 340

60723

Carbon monoxide and unburned hydrocarbon burnout in gas turbine combustors is promoted by a combustor liner having a plurality of vortex generating members or ridges formed therein. The liner includes a substrate having an inner surface and a thermal barrier coating disposed on the inner surface. The vortex generating ridges are formed in the thermal barrier coating and extend transverse to the mean direction of flow through the liner. The thermal barrier coating is capped with a catalytic material which enhances carbon monoxide and unburned hydrocarbon oxidation. The ridges are defined by raised portions of the catalytic material and are of sufficient height to cause mixing between the hot flame products and the cool incompletely-burned flow along the liner wall. Alternatively, the ridges can be defined by forming corrugations in the substrate and disposing a uniform catalytically-active thermal barrier coating over the corrugated substrate.

5365732, Nov 22, 1994

Apr 19, 1993

8/047671

Sanjay M. Correa - Schenectady NY

General Electric Company - Schenectady NY

F02C 928

60 39281

A trim system reduces NO. sub. x output from a cannular gas turbine by trimming fuel flow rates to equalize the fuel-air ratio in each combustor can. The system includes a main valve fluidly connected to the fuel inlet of each can and a trim valve fluidly connected to each fuel inlet in parallel with the main valve. Each trim valve has a flow resistance which is about 30-100 times greater than the flow resistance of each main valve. A controller is provided for controlling the opening of the trim valves in response to the level of NO. sub. x emitted from the gas turbine. The controller receives a signal corresponding to the NO. sub. x emissions from a NO. sub. x sensor and outputs suitable control signals to the trim valves. In one preferred control scheme, the controller sequentially perturbs the fuel flow rate to each can and monitors the resulting changes in NO. sub. x emissions.

5974781, Nov 2, 1999

Oct 6, 1997

8/947452

Sanjay Marc Correa - Niskayuna NY
Jeffery Allan Lovett - Scotia NY

General Electric Company - Schenectady NY

F02C 300

60 3937

The instant invention is directed in general to combustors for gas turbines and, more specifically, to a hybrid can-annular combustor for axial staging in low NOx Combustion. In a preferred embodiment, the instant invention uses premixing stages at different axial positions to carry out axial staging of the heat release for increased operability, where the combustor has a first premixing means for injecting a fuel-air mixture into a can-type configuration for providing the advantages of a can-type combustor for low-load and/or low-temperature conditions and a second premixing means for injecting a fuel-air mixture into an annular-type configuration for providing the advantages of an annular-type combustor for high load and/or high temperature conditions.

5373692, Dec 20, 1994

Feb 7, 1994

8/192538

Sanjay M. Correa - Schenectady NY

General Electric Company - Schenectady NY

F02C 928

60 3906

A trim system reduces NO. sub. x output from a cannular gas turbine by trimming fuel flow rates to equalize the fuel-air ratio in each combustor can. The system includes a main valve fluidly connected to the fuel inlet of each can and a trim valve fluidly connected to each fuel inlet in parallel with the main valve. Each trim valve has a flow resistance which is about 30-100 times greater than the flow resistance of each main valve. A controller is provided for controlling the opening of the trim valves in response to the level of NO. sub. x emitted from the gas turbine. The controller receives a signal corresponding to the NO. sub. x emissions from a NO. sub. x sensor and outputs suitable control signals to the trim valves. In one preferred control scheme, the controller sequentially perturbs the fuel flow rate to each can and monitors the resulting changes in NO. sub. x emissions.

6311471, Nov 6, 2001

Jan 8, 1999

9/227370

Gregor Arthur Waldherr - Clifton Park NY
Robert Patrick Campbell - Loudonville NY
Sanjay Marc Correa - Niskayuna NY
Anthony John Dean - Scotia NY

General Electric Company - Schenectady NY

F02C 330

60 3905

A fuel injector is cooled by steam during operation of a combustor. The injector includes a conduit for channeling fuel into the combustor, and a jacket covering the conduit through which steam is channeled for cooling the injector. The steam may be mixed with the fuel, or kept apart from the fuel in the injector by flowing through passageways in the jacket. Cooling can be further improved by expanding the steam through an orifice prior to entry into the injector.

5479874, Jan 2, 1996

Sep 14, 1994

8/306077

Sanjay M. Correa - Schenectady NY

General Electric Company - Schenectady NY

C30B 2508

117 84

A filament reactor for producing diamond using chemical vapor deposition (CVD) techniques. The reactor includes a closed reaction chamber with at least one gas inlet and at least one exhaust port, two substrates disposed in the reaction chamber, and a resistance heating device in the form of a plurality of filaments positioned between the substrates. A preheater unit is located adjacent to the gas inlet for heating the gas mixture entering the reaction chamber. By preheating the gas mixture, the temperature of the substrates and the concentration of the hydrocarbon species fluxes are kept relatively uniform, thus ensuring high quality diamonds of uniform thicknesses. The preheater unit can be a serpentine tube made of a metal having a high thermal conductivity and wrapped with a resistance heating element.

2010001, Jan 28, 2010

Jun 20, 2007

11/765695

Andrei Tristan Evulet - Clifton Park NY, US
Sanjay Marc Correa - Niskayuna NY, US
Ludwig Christian Haber - Rensselaer NY, US

GENERAL ELECTRIC COMPANY - SCHENECTADY NY

B64C 27/82

244 1719

A thrust generator is provided. The thrust generator is configured to introduce a motive fluid along a Coanda profile and to entrain additional fluid to create a high velocity fluid flow, wherein the high velocity fluid flow is configured to generate thrust for counter-acting a torque generated by a rotating component.

5192516, Mar 9, 1993

Sep 24, 1991

7/764869

Sanjay M. Correa - Schenectady NY

General Electric Company - Schenectady NY

C01B 2100

423235

A method for reducing the NO. sub. x produced by the engine of a supersonic aircraft. A reducing agent is injected into the combustor or the exhaust region of the engine. The reducing agent can be either hydrogen azide or hydrazine in an aqeuous form. For injection into the combustor, injection will be perpendicular to the main air flow through the engine and into a downstream portion of the combustor. Injection is carried out whenever NO. sub. x reduction is needed. By injecting the reducing agent into the downstream portion of the combustor or into the exhaust region, the reduction reaction is decoupled from the combustion process so that engine performance is not impaired.