Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7445399 | Low profile gimbal A gimbal includes a first lug housing. The first lug housing includes a first base plate and a first lug protruding from the second surface of the first base plate. The gimbal also includes a second lug housing. The second lug housing includes a second base plate an... | 11/04/2008 |
| 7165946 | Low-mid turbine temperature abradable coating In order to minimize a clearance between a turbine and its housing, and thus, improve the efficiency of a turbine engine, an abradable coating can be applied to an inner surface of the turbine housing. However, there are no known abradable coatings that can be appli... | 01/23/2007 |
| 6431832 | Gas turbine engine airfoils with improved cooling Cooling air delivery systems for gas turbine engines are used to increase component life and increase power and efficiencies. The present system increases the component life and increases efficiencies by better utilizing the cooling air bled from the comp... | 08/13/2002 |
| 6360418 | Method for controlling the concentricity of a member with a centering device Conventional gas compressors use dry gas sealing arrangements mounted on a shaft of the gas compressor. Functionally, for the dry gas sealing arrangement to properly seal, the concentricity of shaft and the dry gas sealing arrangement must be maintained a... | 03/26/2002 |
| 6314716 | Serial cooling of a combustor for a gas turbine engine A combustor for a gas turbine engine uses compressed air to cool a combustor liner and uses at least a portion of the same compressed air for combustion air. A flow diverting mechanism regulates compressed air flow entering a combustion air plenum feeding... | 11/13/2001 |
| 6308409 | Recuperator cell assembly system Recuperators include a core which is commonly constructed of a plurality of relatively thin flat sheets having an angled or corrugated spacer fixedly attached therebetween. The sheets are joined into cells, sealed and form passages between the sheets. The... | 10/30/2001 |
| 6283479 | High temperature low leakage seal for a shaft on a gas turbine engine A sealing arrangement improves sealing of a shaft in a control system on a gas turbine engine. The sealing arrangement includes a first plate and a non-metallic plate. The non-metallic plate has a glass transition temperature above an operating temperatur... | 09/04/2001 |
| 6239583 | Regulation system for a permanent magnet generator A regulation system for a permanent magnet generator for generating electrical power and for supplying the electrical power to a load comprises a switching circuit connected between the permanent magnet generator and the load, the switching circuit being ... | 05/29/2001 |
| 6158121 | Method and apparatus for making a recuperator cell Circular recuperators are used to increase the efficiency of gas turbine engines. The present circular recuperators is made of a plurality of cells. Each of the plurality of cells includes a plurality of components, such as, a plurality of sheets, a plura... | 12/12/2000 |
| 6139256 | Apparatus for controlling the concentricity of a member with a centering device Conventional gas compressors use dry gas sealing arrangements mounted on a shaft of the gas compressor. Functionally, for the dry gas sealing arrangement to properly seal, the concentricity of shaft and the dry gas sealing arrangement must be maintained a... | 10/31/2000 |
| 6112403 | Method and apparatus for making a recuperator cell Circular recuperators are used to increase the efficiency of gas turbine engines. The present circular recuperators are made of a plurality of cells. Each of the plurality of cells includes a plurality of components, such as, a plurality of sheets, a plur... | 09/05/2000 |
| 5836163 | Liquid pilot fuel injection method and apparatus for a gas turbine engine dual fuel injector A dual fuel injector includes an apparatus for injecting liquid pilot fuel into a gas turbine engine. The injector includes a liquid pilot fuel feedline having an outlet that sprays fuel on the conically-shaped pintle swirler that causes the fuel to form ... | 11/17/1998 |
| 5826423 | Dual fuel injection method and apparatus with multiple air blast liquid fuel atomizers A dual fuel injector for injecting liquid and/or gaseous fuel into a gas turbine engine includes a plurality of hollow spoke members for injecting gaseous fuel that are located upstream of a plurality of main air swirling vanes that are in turn upstream o... | 10/27/1998 |
| 5810076 | High pressure ceramic heat exchanger Many recuperators have components which react to corrosive gases and are used in applications where the donor fluid includes highly corrosive gases. These recuperators have suffered reduced life, increased service or maintenance, and resulted in increased... | 09/22/1998 |
| 5779436 | Turbine blade clearance control system Past gas turbine engines have been manufactured with a variety of systems which have attempted to compensate for the varying radial clearance or interface between a tip of a turbine blade and a surrounding shroud. Such systems have engineered in large cle... | 07/14/1998 |
| 5758504 | Impingement/effusion cooled combustor liner Existing combustors have the tendency to emit emissions and require a large quantity of cooling air to retain or extend the life of the components to a reasonable life expectancy. The present combustor reduces the emissions emitted therefrom, requires a r... | 06/02/1998 |
| 5752802 | Sealing apparatus for airfoils of gas turbine engines An improved airfoil tip sealing apparatus is disclosed wherein brush seals are attached to airfoil tips with the distal ends of the brush seal fibers sealingly contacting opposing wall surfaces. Embodiments for variable vanes, stators and both cooled and ... | 05/19/1998 |
| 5726411 | Method and apparatus for making holes in a workpiece The present method of making a workpiece having a plurality of holes defined therein includes the plurality of holes defining a specific flow at a specific flow condition. The method of making the plurality of holes includes generally the steps of forming... | 03/10/1998 |
| 5706647 | Airfoil structure Past airfoil configurations have been used to improve aerodynamic performance and engine efficiencies. The present airfoil configuration further increases component life and reduces maintenance by reducing internal stress within the airfoil itself. The ai... | 01/13/1998 |
| 5697208 | Turbine cooling cycle Air flow delivery systems for gas turbine engines are used to increase component life and increase power and efficiencies. The present system increases the component life and increases efficiencies by directing a portion of a compressed air formed by the ... | 12/16/1997 |
| 5694803 | Fin folding machine for corrugating sheet material A fin folding machine is disclosed for sequentially folding relatively thin sheet metal material into narrowly grooved corrugations. The fin folding machine includes a pair of opposed clamping tools disposed on opposite sides of the sheet material. The cl... | 12/09/1997 |
| 5673552 | Fuel injection nozzle A fuel injection nozzle includes a first cavity having a first preestablished cross-sectional area and a second preestablished cross-sectional area being larger than the first preestablished cross-sectional area. And, an actuating device being positioned ... | 10/07/1997 |
| 5653579 | Ceramic blade with tip seal The present gas turbine engine (10) includes a disc assembly (64) defining a disc (66) having a plurality of blades (70) attached thereto. The disc (66) has a preestablished rate of thermal expansion and the plurality of blades have a preestablished rate ... | 08/05/1997 |
| 5653580 | Nozzle and shroud assembly mounting structure The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud... | 08/05/1997 |
| 5649418 | Integrated power converter cooling system using turbine intake air Air flow cooling systems are used to increase component life. The present air flow cooling system increases the component life, increases efficiencies and eliminated components. For example, the power source or gas turbine engine is used to cause a flow o... | 07/22/1997 |
| 5645402 | Turbine blade vibration dampening The present turbine wheel assembly increases component life and turbine engine longevity. The combination of the strap and the opening combined with the preestablished area of the outer surface of the opening and the preestablished area of the outer circu... | 07/08/1997 |
| 5636508 | Wedge edge ceramic combustor tile A multipiece combustor has a portion thereof being made of a plurality of ceramic segments. Each of the plurality of ceramic segments have an outer surface and an inner surface. Each of the plurality of ceramic segments have a generally cylindrical config... | 06/10/1997 |
| 5634768 | Airfoil nozzle and shroud assembly An airfoil and nozzle assembly including an outer shroud having a plurality of vane members attached to an inner surface and having a cantilevered end. The assembly further includes a inner shroud being formed by a plurality of segments. Each of the segme... | 06/03/1997 |
| 5629479 | Volume displacement monitoring device The present volume monitoring device (40) includes a cylindrical portion (66) having a piston assembly (100) therein. The cylindrical portion (66) having a measuring device (48) attached thereto at one end (46) and a readout gage (44) attached thereto at ... | 05/13/1997 |
| 5616001 | Ceramic cerami turbine nozzle A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being ... | 04/01/1997 |
| 5603606 | Turbine cooling system Cooling air delivery systems for gas turbine engines are used to increase component life and increase power and efficiencies. The present system increases the component life and increases efficiencies by better utilizing the cooling air bled from the comp... | 02/18/1997 |
| 5601238 | Fuel injection nozzle A premix fuel injection nozzle includes a first mixing chamber having a preestablished cross-sectional area and a second mixing chamber having a preestablished cross-sectional areal being larger than the preestablished cross-sectional area of the first mi... | 02/11/1997 |
| 5600965 | Air conditioning system The present air conditioning system bleeds high pressure, hot, compressed air from the compressor section of a gas turbine engine and passes the high pressure flow of air directly through a single heat exchanger, through a flow control valve, is used to d... | 02/11/1997 |
| 5593085 | Method of manufacturing an impeller assembly A method for determining the generation of a diffusion bond between two articles is disclosed. The two articles are sealed together to define a cavity therebetween. A vacuum is drawn in the cavity by means of an evacuation tube having a passageway. The pa... | 01/14/1997 |
| 5591003 | Turbine nozzle/nozzle support structure An axial flow turbine's nozzle/nozzle support structure having a cantilevered nozzle outer structure including an outer shroud and airfoil vanes extending radially inwardly therefrom, an inner shroud radially adjacent the inner end of the airfoil vanes an... | 01/07/1997 |
| 5584652 | Ceramic turbine nozzle A turbine nozzle and shroud assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion ... | 12/17/1996 |
| 5580219 | Ceramic blade attachment system A turbine blade having a preestablished rate of thermal expansion is attached to a turbine flange having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine blade. The turbine flange in... | 12/03/1996 |
| 5580172 | Method and apparatus for producing a surface temperature map A method and apparatus are provided for producing a temperature profile of a part operating within a machine is provided. The machine is operated with the part for a predetermined period of time. The part is placed in a light box in which a camera produce... | 12/03/1996 |
| 5576984 | Hydrodynamic bearing rotor orbit simulator An apparatus and method is provided for simulating a plurality of bearing orbits. The apparatus includes a first simulator for producing signals indicative of a first simulated bearing orbit; a second simulator for producing signals indicative of a second... | 11/19/1996 |
| 5555933 | Primary surface heat exchanger for use with a high pressure ratio gas turbine engine Prior art recuperators or heat exchangers have been restricted in use to only part speed and power application when adapted for use with high pressure gas turbine engine. The present recuperator or heat exchanger has been adapted for use with a high press... | 09/17/1996 |
