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| Number | Title | Issue Date |
| 6606864 | Advanced multi pressure mode gas turbine A gas turbine which is capable of operating in more than one pressure mode. The gas turbine, which may include a single fixed spool, multiple fixed spools, or a combination of fixed spool(s) and a free turbine, can operate in a positive pressure mode, a t... | 08/19/2003 |
| 6526757 | Multi pressure mode gas turbine A gas turbine which is capable of operating in more than one pressure mode. The gas turbine, which may include a single fixed spool, multiple fixed spools, or a combination of fixed spool(s) and a free turbine, can operate in a positive pressure mode, a t... | 03/04/2003 |
| 6178751 | Liquid fuel injector system The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof. The associated gas turbine engine compressor provides com... | 01/30/2001 |
| 6169334 | Command and control system and method for multiple turbogenerators A command and control system and method for multiple turbogenerators in a grid parallel system includes a master controller to start, sequence, coordinate power commands, and provide fault handling to each of the individual turbogenerators and the specifi... | 01/02/2001 |
| 6158892 | Fluid film thrust bearing having integral compliant foils A compliant foil fluid film bearing having individual fluid film foils formed as arcuate segments by an inner circumferential slot, an outer circumferential slot and a transverse therebetween. The transverse slot may be radial, slightly displaced from rad... | 12/12/2000 |
| 6094799 | Method of making double diaphragm compound shaft A compound shalt coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the fir... | 08/01/2000 |
| 6093975 | Turbogenerator/motor control with synchronous condenser A turbogenerator/motor controller with a microprocessor-based control system having a synchronous condenser, line commutated inverter, and a battery coupled to the turbogenerator/motor controller. When a load transient occurs, the gas turbine engine and t... | 07/25/2000 |
| 6082112 | Liquid fuel injector The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof. The associated gas turbine engine compressor provides com... | 07/04/2000 |
| 6070404 | Gaseous fuel compression and control method A gaseous fuel compression and control system is disclosed which utilizes a helical flow compressor/turbine integrated with a permanent magnet motor/generator and driven by a torque controlling inverter to compress or expand gaseous fuels, precisely contr... | 06/06/2000 |
| 6065281 | Liquid fuel injector and injector system for a small gas turbine engine The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof. The associated gas turbine engine compressor provides com... | 05/23/2000 |
| 6062016 | Gas turbine engine fixed speed light-off method A gas turbine engine light-off system and method in which the gas turbine engine is operated at a fixed speed to provide a substantially constant supply of combustion air for light-off and the fuel flow is ramped up to achieve the correct fuel-to-air rati... | 05/16/2000 |
| 6049195 | Split generator winding inverter A permanent magnet generator having a winding split into two equal windings with each of the two windings connected to a separate three phase rectifier block of a pulse width modulated inverter The pulse width modulated inverter includes three (3) IGBT ch... | 04/11/2000 |
| 6037687 | Double diaphragm compound shaft A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the fir... | 03/14/2000 |
| 6031294 | Turbogenerator/motor controller with ancillary energy storage/discharge A turbogenerator/motor controller with a microprocessor based inverter having multiple modes of operation with an energy storage and discharge system including an ancillary electric storage device, such as a battery, connected to the generator controller ... | 02/29/2000 |
| 6023135 | Turbogenerator/motor control system A turbogenerator/motor control system having a plurality of proportional integral control loops including a fuel command control loop and a current command control loop. The exhaust gas temperature of the gas turbine of the turbogenerator/motor is maintai... | 02/08/2000 |
| 6020713 | Turbogenerator/motor pulse width modulated controller A controller for a permanent magnet turbogenerator/motor having a pulse width modulated inverter and a rectifier bridge. The pulse width modulated inverter includes a positive section magnetic winding and a separate equal negative section magnetic winding... | 02/01/2000 |
| 6016658 | Low emissions combustion system for a gas turbine engine A low emissions combustion system for a gas turbine engine, including a generally annular combustor with a plurality of tangential fuel injectors to introduce a fuel/air mixture. The annular combustor includes a skirt shaped flow control baffle from the i... | 01/25/2000 |
| 5966926 | Liquid fuel injector purge system The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof The associated gas turbine engine compressor provides comb... | 10/19/1999 |
| 5964663 | Double diaphragm compound shaft A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the fir... | 10/12/1999 |
| 5918985 | Compliant foil fluid thrust film bearing with a tilting pad underspring A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and pos... | 07/06/1999 |
| 5915841 | Compliant foil fluid film radial bearing A multi-segment radial bearing including a bushing with an interior bore having a plurality of anti-rotation retainers which are equally spaced and extend the axial length of the interior bore. The generally T-shaped retainers divide the interior bore of ... | 06/29/1999 |
| 5903116 | Turbogenerator/motor controller A turbogenerator/motor controller with a microprocessor based inverter having multiple modes of operation. To start the turbine, the inverter connects to and supplies fixed current, variable voltage, variable frequency, AC power to the permanent magnet tu... | 05/11/1999 |
| 5899673 | Helical flow compressor/turbine permanent magnet motor/generator A helical flow compressor/turbine or pump/turbine with integral permanent magnet motor/generator is disclosed which can be configured as a single stage, two stage or three stage rotary machine. The impeller blades for this machine can be either radial for... | 05/04/1999 |
| 5894720 | Low emissions combustion system for a gas turbine engine employing flame stabilization within the injector tube A low emissions combustion system for a gas turbine engine, including a generally annular combustor with a plurality of tangential fuel injectors to introduce a fuel/air mixture. The annular combustor includes a skirt shaped flow control baffle from the i... | 04/20/1999 |
| 5873235 | Liquid fuel pressurization and control method A liquid fuel pressurization and control system is disclosed which utilizes either a helical flow pump, or a helical flow pump followed by a gear pump, to pressurize liquid fuel to precisely the pressure level required by a turbogenerator's combustor inje... | 02/23/1999 |
| 5850732 | Low emissions combustion system for a gas turbine engine A low emissions combustion system for a gas turbine engine, including a generally annular combustor with a plurality of tangential fuel injectors (14) to introduce a fuel/air mixture. The annular combustor includes a skirt shaped flow control baffle (48) ... | 12/22/1998 |
| 5850733 | Gaseous fuel compression and control system and method A gaseous fuel compression and control system is disclosed which utilizes one or more helical flow compressor/turbine integrated with a permanent magnet motor/generator and driven by a torque controlling inverter to compress or expand gaseous fuels, preci... | 12/22/1998 |
| 5827040 | Hydrostatic augmentation of a compliant foil hydrodynamic fluid film thrust bearing A system to hydrostatically augment the thrust load capacity of a bilateral compliant foil hydrodynamic fluid film thrust bearing for a turbomachine is disclosed. A plurality of channels and fixed orifices are provided in the bearing thrust plate to deliv... | 10/27/1998 |
| 5819524 | Gaseous fuel compression and control system and method A gaseous fuel compression and control system is disclosed which utilizes a helical flow compressor/turbine integrated with a permanent magnet motor/generator and driven by a torque controlling inverter to compress or expand gaseous fuels, precisely contr... | 10/13/1998 |
| 5791868 | Thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing A thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing is disclosed. The system includes an end cap over the free end of a rotary machine shaft, a compliant foil hydrodynamic fluid film journal bearing located at the... | 08/11/1998 |
| 5752380 | Liquid fuel pressurization and control system A liquid fuel pressurization and control system is disclosed which utilizes either a helical flow pump, or a helical flow pump followed by a gear pump, to pressurize liquid fuel to precisely the pressure level required by a turbogenerator's combustor inje... | 05/19/1998 |
| 5697848 | Compound shaft with flexible disk coupling A compound shaft for a three journal bearing turbomachine which includes a first stiff shaft supported by two journal bearings, a second stiff shaft supported by one journal bearing and by one bi-directional thrust bearing, and a flexible disk shaft that ... | 12/16/1997 |
| 5685156 | Catalytic combustion system The present invention is directed to a catalytic combustion system having a gas turbine engine recuperator and an annular catalytic combustor. The annular catalytic combustor includes a pre-burner/pre-mixer which functions as a pre-burner during startup a... | 11/11/1997 |
| 5529398 | Compliant foil hydrodynamic fluid film thrust bearing A compliant foil hydrodynamic fluid film thrust bearing is disclosed which is comprised of a two sided thrust disk rotating element, compliant fluid foil members that axially enclose the rotating element, compliant spring foil members that axially enclose... | 06/25/1996 |
| 4763063 | Compact digital pressure sensor circuitry A conditioning circuit for use with a pressure transducer is disclosed which provides a digitally readable electronic output signal indicative of capacitance sensed by the pressure transducer. The circuitry of the present invention utilizes an R-C charge/... | 08/09/1988 |
| 4722387 | Heat exchanger and method of assembly A heat exchanger of the type characterized by a plurality of heat exchanger tubes separated by cooling fins. The ends of the tubes being inserted into a leadless header plate and thereafter brazed thereto. The overall depth of the heat exchanger being app... | 02/02/1988 |
| 4718273 | Combination alpha, static and total pressure probe An air data sensor probe for providing measurements of total pressure, static pressure and angle-of-attack for an aircraft in flight. The probe is essentially cylindrical with a hemispherical nose. It has a vertically elongated central opening for measure... | 01/12/1988 |
| 4709180 | Toothless stator construction for electrical machines A stator for use with a permanent magnet rotor electrical machine is disclosed which stator eliminates ferromagnetic teeth previously used in stator cores. The stator of the present invention uses a winding support structure made of non-magnetizable, non-... | 11/24/1987 |
| 4702969 | Laminate bonding methods for nonferrous metallic fluidic devices A laminated aluminum fluidic device is constructed by sequentially coating the facing side surfaces of the aluminum laminae with layers of zinc, nickel and solder, positioning the facing pairs of solder layers in intimate contact, and heating the coated l... | 10/27/1987 |
| 4701060 | Foil journal bearing cooling Cooling is provided for a foil journal bearing by means of flow openings in the individual overlapping foils without adversely affecting the compliance of the foils.... | 10/20/1987 |
