Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7431015 | Fuel metering system proportional bypass valve error compensation system and method A method and system for controlling fuel flow in a fuel metering system that includes a metering valve and a proportional bypass valve that produces a differential pressure error across the metering valve includes supplying a first fraction of fuel through the meter... | 10/07/2008 |
| 7350619 | Auxiliary power unit exhaust duct with muffler incorporating an externally replaceable acoustic liner Methods and apparatus are provided for an exhaust duct having an externally replaceable acoustic liner. The exhaust duct includes a forward section that is configured to be axially coupled with a bulkhead collar on the aircraft, a body section that is coupled to the... | 04/01/2008 |
| 7259471 | Drive line for fluid flow power engine with speed guidance, power impact reduction and short-term energy storage Control procedure for a flow machine, wherein the flow machine comprises a turbine, which picks up power from a wind or water current, and a driveline, which transfers power from the turbine to an electric generator connected to an electricity grid of constant grid ... | 08/21/2007 |
| 7188475 | Starting and controlling speed of a two spool gas turbine engine Two spool gas turbine engines are often used to drive variable speed loads, such as an electric generator, or the fan/propeller of aircraft engines. The gas turbine engine must be designed to withstand transient speed and temperature conditions which are encountered... | 03/13/2007 |
| 7118331 | Stator vane assembly for a turbomachine A stator vane assembly for a turbomachine comprising a plurality of circumferentially arranged stator vanes (32), the axial position of the stator vanes (32) and/or the pitch angle circumferentially between adjacent stator vanes (32) is varied c... | 10/10/2006 |
| 7109595 | Small multi-functional butane gas-powered portable electric generator The object of the present invention is a multi-functional electric generator comprising, an engine, a generator, a voltage-stabilizer control circuit, a gas storage gauge and a lighter. A manual electrical rod can be assembled to a side of the engine allowing the ge... | 09/19/2006 |
| 7055330 | Apparatus for driving an accessory gearbox in a gas turbine engine A mechanical drive system for an accessory gearbox of a gas turbine engine is provided. The gas turbine engine includes a high-pressure drive shaft and a low-pressure drive shaft. The mechanical drive system includes a tower shaft and a lay shaft. The tower shaft is... | 06/06/2006 |
| 6973792 | Method of and apparatus for a multi-stage boundary layer engine and process cell A multi-staged boundary layer engine and process cell, (based on the effect known as adhesion and viscosity) which achieves high thermal efficiencies and high mechanical power output for use in the power generation, geothermal, energy recovery, solar, transportation... | 12/13/2005 |
| 6895741 | Differential geared turbine engine with torque modulation capability A method and apparatus for controllable distribution of power from a turbine of a gas turbine engine between two rotatable loads of the gas turbine engine, comprises transferring a shaft power of the turbine to the respective rotatable loads using differential geari... | 05/24/2005 |
| 6843060 | Fault management system for gas turbine engines Disclosed herein is a “real time” Time Limited Dispatch (TLD) fault management system and method for evaluating the operational suitability of an engine's electronic control system. The TLD system disclosed herein uses a software algorithm to compute or predict ... | 01/18/2005 |
| 6810675 | Method for operating a combined-cycle power station In a method for increasing the power output of a combined-cycle power station, comprising at least one gas turbo group, at least one heat recovery steam generator and at least one steam turbo group, with the gas turbo group comprising at least one compressor, at lea... | 11/02/2004 |
| 6735954 | Offset drive for gas turbine engine A gas turbine engine including a gas generator module and a reduction gearbox module. The gas generator module has an axis which extends longitudinally along a centreline of the gas generator module, and the reduction gearbox module has an axis which extending longi... | 05/18/2004 |
| 6704620 | Method and control device for controlling a gas turbine set, in particular in gas and steam power stations In order to take account of coupling in the controlled systems and, in addition, regulating variable limitations and to permit reliable control of a gas turbine set, a method and a control device for controlling a gas turbine set is provided, in particula... | 03/09/2004 |
| 6622473 | Speed-reducing gear unit to absorb the axial loads generated by a turbojet fan A turbojet engine having a fan (12) driven by a speed-reducing gear unit (23) whose input is driven by a turbine shaft (22). The speed-reducing gear unit (23) includes a planet gear (24) affixed to a turbine shaft (22), a ring gear (28) joined to a fan sh... | 09/23/2003 |
| 6546735 | Methods and apparatus for operating turbine engines using rotor temperature sensors A gas turbine engine including a temperature sensor assembly that continuously monitors an operating temperature within a multi-stage rotor assembly of the turbine engine is described. A plurality of cavities are defined within the multi-stage rotor assem... | 04/15/2003 |
| 6519944 | Method of generating a transient plant power boost in a gas turbine apparatus A system is described for allowing transient power augmentation of a gas turbine or a gas turbine combined cycle power plant. A reservoir of pressurized and/or liquefied gas is installed to store a temporary supply of gas turbine working fluid. This suppl... | 02/18/2003 |
| 6463740 | Compressor starting torque converter The subject invention involves a compressor starting torque converter (CSTC) to enable starting up single-shaft gas turbine driven compressor sets, such as in a liquified natural gas (LNG) plant. The system includes a single-shaft gas turbine with an outp... | 10/15/2002 |
| 6201029 | Staged combustion of a low heating value fuel gas for driving a gas turbine A process is provided for combusting a low heating value fuel gas in a combustor to drive an associated gas turbine. A low heating value fuel gas feed is divided into a burner portion and a combustion chamber portion. The combustion chamber portion and a ... | 03/13/2001 |
| 6186447 | Autothrottle retard rate control system In an autothrottle system having the capability to reduce engine throttle setting from a first position to an idle position, an improvement including calculating a rate of throttle reduction as a function of the combination of a nominal retard rate value ... | 02/13/2001 |
| 6035629 | System for controlling acceleration of a load coupled to a gas turbine engine A system and method of controlling the acceleration of a load driven by a gas turbine engine detects the existence of an overload condition and reduces an acceleration setpoint when such condition arises.... | 03/14/2000 |
| 6032456 | Power generating gasification cycle employing first and second heat exchangers An improved combined power generation cycle has been provided for electric power generation from gasified solid fuel such as coal or biomass. The power cycle provided by the present invention does not require the use of high-temperature particulate contro... | 03/07/2000 |
| 5709076 | Method and apparatus for power generation using rotating ramjet which compresses inlet air and expands exhaust gas against stationary peripheral wall Novel power generation method and apparatus. At least partially unshrouded type supersonic ramjet thrust module(s) are provided at the periphery of a low aerodynamic drag tapered disc rotor. The rotor is affixed at a central hub to a shaft, and rotates ab... | 01/20/1998 |
| 5237817 | Gas turbine engine having low cost speed reduction drive The cost and bulk of a speed reducing transmission required to provide low speed rotational power from a gas turbine engine is avoided by employing bearings (16, 18) jornalling a high speed shaft (12) of the engine with a power takeoff in the form of a tu... | 08/24/1993 |
| 5211675 | Variable volume combustion chamber for a gas turbine engine A variable volume combustion chamber for a gas turbine engine that has a able wall to vary the volume of the combustion chamber. The movable wall is positioned according to the operating conditions of the gas turbine engine, achieving one extreme positio... | 05/18/1993 |
| 5163286 | Gas turbine engine with free turbine inlet flow control A gas turbine engine comprised of a gas generator in flow series arrangement with a free turbine is provided, that includes a bleed port disposed between the gas generator and the free turbine. The flow of hot gas through the free turbine is controlled by... | 11/17/1992 |
| 4843816 | Gas turbine plant for automotive operation At a low part load, and at idling of a vehicle machinery it is difficult to obtain a good fuel economy and acceptable emission rates. The amount of work for driving the compressor and the auxiliary apparatuses is considerable in a gas turbine, and in view... | 07/04/1989 |
| 4821506 | Radial turbine with variable axial nozzle Thermal degradation of variable nozzle components in a gas turbine power plant is minimized by a construction including a radial outflow compressor 16 on a shaft 10 with a radial inflow turbine 18, combustion gas delivery path 78 which is generally concen... | 04/18/1989 |
| 4653269 | Heat engine A heat engine with a compressor, an external combustion chamber from which combustion gases pass through suitable valving to an expander, an air compressor, a heat exchanger where exhaust gases from the expander preheat compressed air which then flows to ... | 03/31/1987 |
| 4109772 | Vehicular single shaft gas turbine engine power system A vehicular gas turbine engine power system includes an engine, an automatic clutch, a service clutch and an infinitely variable transmission coupled successively along a power train. A vehicle control system controls engine speed, transmission ratio and ... | 08/29/1978 |
| 4019896 | Trash disposal system Apparatus and a method of disposing of trash comprised of a wide variety of constituents including garbage, metals, glass, plastic and other scrap materials, wherein the trash is directed into an incinerator and subjected to high temperatures to reduce th... | 04/26/1977 |
| 3956887 | Gas turbine engines A core engine or gas generator for use in a range of gas turbine engines, which consist of a multi-stage compressor and a single stage supersonic turbine, the compressor and turbine being mouned on a single shaft. The compressor includes a number of stage... | 05/18/1976 |
