Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8182204 | Deflector for a gas turbine strut and vane assembly A gas turbine engine is provided having an annular duct having an inner duct wall and an outer duct wall. At least one strut extends between the inner duct wall and the outer duct wall. The strut has an aerodynamic shape. At least one vane located circumferentially ... | 05/22/2012 |
| 8181443 | Heat exchanger to cool turbine air cooling flow A cooling system of a gas turbine engine, includes a heat exchanger having a common wall shared by a first air passage for directing a portion of a compressor air flow to be used as cooling air, and a second air passage for directing a portion of a bypass air flow, ... | 05/22/2012 |
| 8167091 | Oil scavenge system having churning damper for gas turbine engines An oil scavenge system of a gas turbine engine in accordance with one embodiment of the present invention, comprises a housing defined about an axis of rotation, the housing confining an air/oil mixture in motion within the housing and defining an oil scavenge area ... | 05/01/2012 |
| 8157511 | Turbine shroud gas path duct interface An arrangement for sealing a turbine shroud gas path duct interface of a turbine engine comprises a static shroud surrounding a rotatable airfoil array and an annular duct downstream of the shroud with respect to a gas flow passing through the gas path. The shroud a... | 04/17/2012 |
| 8099962 | Mid turbine frame system and radial locator for radially centering a bearing for gas turbine engine A gas turbine engine has a casing component, such as a mid turbine frame system, which includes an outer case surrounding a spoke or strut casing. Load transfer spokes of the spoke casing are detachably connected to the outer case and radially extend between the out... | 01/24/2012 |
| 8096756 | Apparatus and method for controlling a compressor A compressor comprises a casing having an inner surface surrounding a rotor assembly, the rotor assembly having a plurality of circumferentially spaced radially outwardly extending rotor blades, each blade having leading and trailing edges and a tip, the compressor ... | 01/17/2012 |
| 8095324 | Permanent magnet rotor crack detection A method and apparatus for permanent magnetic (PM) rotor crack detection includes a sensor which monitors magnetic flux distribution of the PM rotor and identifies the presence of a crack in the PM rotor when a magnetic flux distribution change or anomaly is detecte... | 01/10/2012 |
| 8092153 | Bypass air scoop for gas turbine engine A gas turbine engine has a plurality of radial struts in a bypass duct. At least one strut has a scoop incorporated with the fairing of the strut and in communication with an air passage of an engine secondary air system. The scoop faces a bypass air flow to scoop a... | 01/10/2012 |
| 8092146 | Active tip clearance control arrangement for gas turbine engine An active tip clearance control (ATCC) apparatus of an aircraft gas turbine engine is situated within a pressurized core case of the engine. First and second portions of bypass air flow passing through the respective compressed core compartment and the ATCC apparatu... | 01/10/2012 |
| 8091371 | Mid turbine frame for gas turbine engine A mid turbine frame of a gas turbine engine includes an outer case which supports a spoke casing co-axially positioned therein. The spoke casing has load transfer spokes extending radially from an inner case and secured to the outer case. A load transfer device is p... | 01/10/2012 |
| 8083940 | Oil strainer for a gas turbine engine The oil strainer has a filtering portion and a flexible sleeve portion to which the filtering portion is connected. The flexible sleeve portion has a plurality of spigot-receiving slots on the upstream side of the strainer. ... | 12/27/2011 |
| 8061969 | Mid turbine frame system for gas turbine engine A gas turbine engine mid turbine frame having an inner case supporting at least one bearing and at least three spokes extending radially outwardly to an outer case, the mid turbine frame having an interturbine duct extending through the mid turbine frame, the intert... | 11/22/2011 |
| 8044319 | Variable arc gap plasma igniter A variable arc gap plasma igniter element includes electrodes moveable relative to each other. The electrodes are preferably set to define a smaller air gap to initiate a plasma arc and later extended to obtain longer plasma arc. ... | 10/25/2011 |
| 8043063 | Intentionally mistuned integrally bladed rotor A frequency mistuned integrally bladed rotor (IBR) for a gas turbine engine comprises a hub and a circumferential row of blades of varying frequency projecting integrally from the hub. Each blade in the row alternate with another blade having a different pressure su... | 10/25/2011 |
| 8038411 | Compressor turbine blade airfoil profile A turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 1. The X and Y values are distances, which when smoothly connected by an approp... | 10/18/2011 |
| 8037690 | Fuel manifold for gas turbine engine A fuel manifold for a gas turbine engine comprises manifold adaptors each supporting a nozzle for outputting fuel from a fuel supply. The manifold adaptors have a primary conduit and a secondary conduit extending between connection ends of the manifold adaptor. The ... | 10/18/2011 |
| 8033113 | Fuel injection system for a gas turbine engine A fuel injection system comprises a fuel conveying member and a nozzle tip assembly threadably engaged thereto. A pair of sealing elements is engaged in a fuel passage between the fuel conveying member and the nozzle tip for sealing the junction therebetween. The pa... | 10/11/2011 |
| 8025503 | One-engine-inoperative training method and system A method and system of simulating one-engine-inoperative (OEI) conditions in a multi-engine single-output aircraft which involves the operation of the engines above non-zero power settings, and operating each relative to one another to simulate power loss experience... | 09/27/2011 |
| 8015789 | Anti-icing apparatus and method for aero-engine nose cone An aero-engine nose cone anti-icing system (10) using a rotating heat pipe (12) is provided to replace the current method of blowing hot compressor bleed air over the nose cone surface. Heat is transferred from a hot source (36) within the engin... | 09/13/2011 |
| 8007253 | Pump and method A pump for moving a liquid including a rotor rotatable within a housing and slidable relative to the housing between a first axial rotor position during normal pump operation and a second axial rotor position during a pump inoperative condition. ... | 08/30/2011 |
| 8007237 | Cooled airfoil component A gas turbine engine airfoil component having an airfoil body with a core cavity, an end opening in communication with the core cavity, and a wall having a plurality of cooling holes defined therein, each cooling hole being oriented such that the respective hole axi... | 08/30/2011 |
| 7997062 | Dual channel regulated fuel-oil heat exchanger A gas turbine engine includes a fuel-oil heat exchange system in which the fuel is continuously heated by a primary hot oil flow in a primary fuel-oil heat exchanger and the fuel is selectively heated in a secondary fuel-oil heat exchanger by a secondary hot oil flo... | 08/16/2011 |
| 7982133 | Crack controlled resin insulated electrical coil An electrically insulated coil assembly for use in a high vibration environment, such as with an aircraft engine, includes a coil of metal wires encompassed by a resin base matrix. A fabric is embedded in the resin matrix near an outer surface of the resin base matr... | 07/19/2011 |
| 7952220 | Generator for gas turbine engine having main DC bus accessory AC bus An aircraft electrical system includes a generator that supplies electrical AC power to a plurality of accessories associated with a gas turbine engine. The generator also supplies power to an aircraft DC bus in parallel to the supply to the accessory bus. ... | 05/31/2011 |
| 7950236 | Exhaust duct and tail cone attachment of aircraft engines An annular exhaust duct of a gas turbine engine includes inner and outer cases co-axially disposed, and radially spaced apart by a plurality of airfoils radially extending therebetween. The outer case includes a connection apparatus for supportably connecting the ex... | 05/31/2011 |
| 7950233 | Combustor A combustor is provided having one or more apertures adapted to asymmetrically introduce air adjacent the fuel nozzles to reduce smoke resulting from unburned hydrocarbons in a gas turbine engine combustion system by impeding escape of unburned hydrocarbons. ... | 05/31/2011 |
| 7944187 | Modulation control of power generation system Methods and apparatuses are disclosed for producing current with a desired output frequency from one or more fixed or variable speed alternators by varying a saturation level of a portion of the alternator(s) based on a output frequency desired, and preferably then ... | 05/17/2011 |
| 7942002 | Fuel conveying member with side-brazed sealing members A gas turbine engine fuel nozzle system having a fuel conveying member with a channel formed in a surface thereof defined between a pair of facing spaced apart walls, and at least one sealing member disposed within the channel and sealingly fastened to the spaced ap... | 05/17/2011 |
| 7937929 | Exhaust duct with bypass channel An exhaust duct for directing a stream of exhaust gases in a gas turbine engine is provided. The exhaust duct comprises an inlet for receiving the stream of exhaust gases from a turbine section of the gas turbine engine; an outlet in fluid communication with the inl... | 05/10/2011 |
| 7926287 | Method of operating a gas turbine engine A method of operating a gas turbine engine having a rotatable turbine shaft with an electric machine mounted to the shaft. The method includes providing supplemental acceleration and/or deceleration of the turbine shaft of the gas turbine engine through the use of t... | 04/19/2011 |
| 7926280 | Interface between a combustor and fuel nozzle A floating collar assembly is provided comprising a substantially flat floating collar trapped between a heat shield and a dome panel of the combustor. Axial engagement between the floating collar and the fuel nozzle is maintained via a nozzle cap mounted over the f... | 04/19/2011 |
| 7912587 | Method of balancing a gas turbine engine rotor A method of balancing an assembly of rotary parts of a gas turbine engine comprising measuring at least one of the concentricity and parallelism of each component and considering globally all possible component stacking positions to generate an optimized stacking po... | 03/22/2011 |
| 7908869 | Thermal and external load isolating impeller shroud A gas turbine engine has a compressor assembly and a turbine assembly rotationally mounted on a shaft, the turbine assembly being driven by hot gases discharged from a combustion chamber disposed between the compressor and turbine assemblies, the compressor having a... | 03/22/2011 |
| 7874164 | Fuel nozzle flange with reduced heat transfer A fuel nozzle for a gas turbine engine comprises a nozzle body defining a passage extending therethrough and a flange around the nozzle body extending radially and outwardly from the nozzle body. The flange defines a mounting face thereof and a plurality of mounting... | 01/25/2011 |
| 7874136 | Rotor containment element with frangible connections A containment system for containing fragments of a burst rotor including first and second means for frangibly connecting a containment element to first and second walls, the first and second means rupturing upon being subjected to a load mainly produced by a transla... | 01/25/2011 |
| 7862650 | Woven electrostatic oil precipitator element An electrostatic precipitator element includes preferably a mesh made of at least two individually insulated conductors with defined openings therebetween. An electrical field in the openings electrostatically attracts suspended particulate to a respective conductor... | 01/04/2011 |
| 7862304 | Compressor turbine blade airfoil profile A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoo... | 01/04/2011 |
| 7862303 | Compressor turbine vane airfoil profile A single stage high pressure turbine vane includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoot... | 01/04/2011 |
| 7862262 | Multi-flute ball endmill for airfoil machining A milling cutter comprises a shank section joined to a cutting section. The cutting section includes a plurality of peripheral teeth separated by a plurality of flutes to form cutting edges extending around the cutting section in a helix direction. The number of res... | 01/04/2011 |
| 7861981 | Protective saddle mount for cable tie A method and apparatus for providing a mounting system for an elongated item such as a cable, tube or wire, or an assembly of multiple cables, tube and/or wires. The mounting system includes an apparatus for mounting to a supporting structure, and an apparatus for r... | 01/04/2011 |
