Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8147194 | Turbine engine components A turbine engine component includes a shaft and two sets of hollow radial plates. The shaft includes an axial section forming a portion of a main passage having a substantially uniform diameter. The axial section has two ends and a center located substantially halfw... | 04/03/2012 |
| 7946813 | Turbine rotor and steam turbine A turbine rotor 10 is disposed in a steam turbine, into which high-temperature steam of 650° C. or more is introduced, and separately configured of the portion made of the Ni-base alloy and the portion made of the CrMoV steel depending on a steam temperature... | 05/24/2011 |
| 7771166 | Welded turbine shaft and method for producing said shaft The invention relates to a turbine shaft that is aligned in a longitudinal direction. Said shaft comprises a central region and two outer regions, which are fixed to the central region in the longitudinal direction. The central region is produced from a material wit... | 08/10/2010 |
| 7540711 | Heat resisting steel, steam turbine rotor shaft using the steel, steam turbine, and steam turbine power plant The invention provides a heat resisting steel having superior high-temperature strength and notch rupture strength, a rotor shaft using the heat resisting steel, a steam turbine using the rotor shaft, and a power plant using the steam turbine. The heat resisting ste... | 06/02/2009 |
| 7470110 | Turbine or compressor device and method for assembling the device Method and arrangement for providing a turbine or compressor device having a rotor (1), that includes a first rotor section (2) having at least one disc-shaped or annular element (3) which has a multiplicity of blades (4) arranged in seri... | 12/30/2008 |
| 7458773 | Turbomachine with contrarotating fans A turbomachine comprising: a gas generator for producing combustion gas; a turbine section through which the combustion gas passes and comprising first and second rows of contrarotating turbine rotor blades respectively driving first and second low-pressure shafts i... | 12/02/2008 |
| 7404699 | Turbomachine The invention relates to a turbine machine, in particular, a steam turbine, comprising an inner housing, a turbine shaft, mounted such as to rotate, characterized in that the inner housing and the turbine shaft are produced from differing materials. The turbine is m... | 07/29/2008 |
| 7390170 | Device for assembling annular flanges together, in particular in a turbomachine A device for assembling together annular flanges by means of fastening bolts, in particular in a low-pressure turbine stage of the turbojet, one of the flanges has an element projecting from its face that faces the other flange and that is received in a notch in sai... | 06/24/2008 |
| 7390164 | Fixing structure for fixing rotor to rotor shaft, and turbo molecular pump having the fixing structure Provided are a fixing structure for fixing a rotor to a rotor shaft, in which the contact state of the contact surfaces of the rotor shaft and the rotor is stabilized to thereby maintain the rotation balance of the rotor shaft and the rotor, making it possible to pr... | 06/24/2008 |
| 7367774 | System for protecting a main shaft of an engine having a fusible bearing A turbomachine comprising at least a first rotary assembly with a first shaft, a stator, and bearings secured to the stator and suitable for supporting the shaft, one of the bearings being capable of giving way when an unbalance occurs in the rotary assembly, at lea... | 05/06/2008 |
| 7360986 | System for blocking a main shaft of an engine having a fusible bearing A turbomachine including at least a first rotary assembly with a first shaft, a stator, and bearings secured to the stator and suitable for supporting the first shaft, one of the bearings being capable of giving way when an unbalance occurs in the first rotary assem... | 04/22/2008 |
| 7331757 | Turbine shaft and production of a turbine shaft The invention relates to a turbine shaft for a steam turbine, oriented in an axial direction and comprising a first and a second flow region. According to the invention, a first material is provided in the first flow region of the turbine shaft, and a second flow re... | 02/19/2008 |
| 7332841 | Computer cooler with light emitting arrangement Provided is a cooler mounted in computer having a transparent case comprising a frame including a coil section including windings, a conductive first bearing on an upper center of the coil section, a conductive second bearing on a lower center of the coil section, a... | 02/19/2008 |
| 7322181 | Turbofan engine with the fan fixed to a drive shaft supported by a first and a second bearing The turbojet includes a fixed structure, a fan rotor fixed to a drive shaft supported by a first bearing and a second bearing. The second bearing is mounted on the fixed structure through a bearing support part. The first bearing is mounted on the fixed structure of... | 01/29/2008 |
| 7322180 | Turbo-jet engine with fan integral with a drive shaft supported by first and second bearings A turbo-jet engine including a fixed structure and a fan rotor mounted on a drive shaft supported by a first bearing and a second bearing. The engine further comprises an axial retaining device configured to form an emergency bearing and to cooperate with the fixed ... | 01/29/2008 |
| 7290987 | Impeller hub for torque converter A direct replacement impeller hub for the torque converter of an automatic transmission and a method of repairing an impeller assembly utilizing the replacement impeller hub to provide increased service longevity. In the present impeller hub the geometric roundness ... | 11/06/2007 |
| 7267523 | Composite shaft A turbine shaft may be used to remove a heat load from pliant bearings without requiring the use of a process fluid for cooling the turbine shaft. The turbine shaft comprises a heat conductive sleeve disposed between an outer surface of a tie rod shaft and an inner ... | 09/11/2007 |
| 7244113 | Scroll pump with controlled axial thermal expansion Vacuum pumping apparatus includes a pump frame, a stationary scroll element secured to the pump frame, the stationary scroll element including a stationary scroll blade, an orbiting scroll element including an orbiting scroll blade intermeshed with the stationary sc... | 07/17/2007 |
| 7232289 | Shroud for an air turbine starter A shroud is provided for separating an air turbine starter housing from a turbine wheel. The shroud comprises a ring and a bumper. The ring is configured to be disposed between the turbine wheel and the housing and has an outer peripheral surface and an inner periph... | 06/19/2007 |
| 7217099 | Coated forward stub shaft dovetail slot A compressor forward stub shaft comprising a plurality of axially spaced, annular rows of dovetail grooves, at least a first and a second of the plurality of rows having dovetail slots coated in part with an anti-wear coating. ... | 05/15/2007 |
| 7192247 | Steam turbine power generation system and low-pressure turbine rotor A steam turbine power generation system, comprising a high-pressure turbine, an intermediate-pressure turbine and a low-pressure turbine, wherein the intermediate-pressure turbine has an inlet steam temperature of 650–720° C., and the low-pressure turbine has an ... | 03/20/2007 |
| 7168916 | Welded rotor for a thermal machine, and process for producing a rotor of this type A rotor (10) for a thermal machine, in particular a steam or gas turbine, includes a plurality of rotor disks (12, 13, 14) which are arranged one behind the other in the rotor axis (11) and are welded to one another, at least one first rotor dis... | 01/30/2007 |
| 7165939 | Shaft structure for cooling fan rotor A fan shaft structure includes an annular groove portion, an end head adjacent to the groove portion, and several teeth equally spaced around the surface of the shaft. The annular groove portion, end head and teeth constitute an insert part of the fan shaft, around ... | 01/23/2007 |
| 7156282 | Titanium-aluminide turbine wheel and shaft assembly, and method for making same A titanium-aluminide turbine wheel (120, 220, 320, 420) is joined to the end of a shaft (110, 210, 310, 410) by utilizing a titanium surface on the end of the shaft to be joined to the wheel, and electron-beam welding the wheel onto the titanium surfac... | 01/02/2007 |
| 7147436 | Turbine engine rotor retainer A gas turbine engine has a rotor stack carried by a central shaft. A number of retainer segments each have a first surface engaging the rotor stack and a second surface engaging the central shaft so as to transmit a precompression force from the central shaft to the... | 12/12/2006 |
| 7128523 | Drainage pump and underwater bearing unit A drainage pump has a pump part in which blades mounted on a rotary shaft are arranged in a pump casing and an underwater bearing unit which uses pumped water mixed with hard particles as a lubricant and has a sliding bearing for journaling the rotary shaft. A porti... | 10/31/2006 |
| 7097032 | Chain pin for hinge conveyor chains A chain module according to the invention comprises at least one link from ferritic-pearlitic stainless steel and at least one chain pin, which chain pin comprises an outwardly facing surface formed from a steel alloy which is substantially non-seizing to the ferrit... | 08/29/2006 |
| 7083385 | Axial flow fan motor An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed theret... | 08/01/2006 |
| 7056088 | Steam turbine rotor temperature control at oil deflector A turbine comprises an oil deflector including at least one set of seal rings, and a shaft including an annular step. The step includes a circumferential surface in proximity to the seal rings of the oil deflector and a side surface extending radially from a center ... | 06/06/2006 |
| 7048495 | Rotating machine having a shaft including an integral bearing surface A shaft (12) for a pump (10) or other rotating machine, made substantially out of only engineering plastic—such as the polymer PEEK or some other selected polymer—and including portions having respective surfaces (12a–d) serving as ... | 05/23/2006 |
| 7011497 | Shaft/hub unit for wind turbine rotor A rotor shaft/hub unit for a wind energy plant with a rotor shaft provided with a rotor bearing seat which is connected to a rotor hub provided with a blade or blade bearing connection, the rotor hub and rotor shaft are manufactured in one piece from bonded fiber fa... | 03/14/2006 |
| 7004725 | Device for centering a tube in a turbine shaft A device for centering a component positioned inside and rotationally secured at its end to a turbine hollow shaft positioned in a gas turbine engine. The device includes a sheath enclosing and solidly joined to the component, and an elastic ring interposed between ... | 02/28/2006 |
| 6994519 | Apparatus and methods for coupling axially aligned turbine rotors The coupling between discrete axially aligned first and second turbine shafts includes a flange on one end of one shaft and a rotor wheel on the other shaft. Holes in axial alignment with one another through the flange and rotor wheel receive fastening elements secu... | 02/07/2006 |
| 6986637 | Stub axle A stub shaft for a turbine engine is described in which respective masses are positioned along the stub shaft in a balanced rotation relationship for normal rotation. One mass is positioned at the periphery of a shaft end rim such that upon failure of the stub shaft... | 01/17/2006 |
| 6971850 | Multiple alloy rotor and method therefor A process for producing a rotor, the rotor formed thereby, as well as turbines in which such a rotor is installed. The rotor is formed by casting an ingot to have first and second regions formed of different alloys that intermix during casting to define a transition... | 12/06/2005 |
| 6969238 | Tri-property rotor assembly of a turbine engine, and method for its preparation A rotor assembly of an axial flow turbine engine has a bladed ring including a ring, and a plurality of turbine blades affixed to the ring and extending radially outwardly from the ring. There is a solid state weld joint between a central disk hub and the ring of th... | 11/29/2005 |
| 6962483 | Multiple alloy rotor A monolithic rotor comprising first and second rotor regions axially aligned within the monolithic rotor and a transition zone therebetween. The first and second rotor regions are formed of different alloys and the transition zone having a composition that differs f... | 11/08/2005 |
| 6899522 | Method for manufacturing a turbine wheel rotor A method for connecting a wheel, such as a turbine wheel or compressor wheel, in a turbine wheel rotor. The method includes providing a shaft made of steel, and pouring a casting alloy around an end of the shaft, wherein the casting alloy includes an intermetallic c... | 05/31/2005 |
| 6896479 | Turbocharger rotor A turbocharger rotor has a turbine wheel and shaft, a compressor wheel and adapter and a separate thrust runner clamped together by a fastener rod. The adapter is piloted on the shaft and the thrust runner is piloted on the adapter, which has annular ends engaging t... | 05/24/2005 |
| 6887425 | Shaft and post assemblies for molten metal apparatus An apparatus for moving a stream of molten metal comprising a pumping member, a housing at least partially enclosing the pumping member, a power device seated on a support, and a shaft connecting the power device and the pumping member. At least one post is disposed... | 05/03/2005 |
