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| Number | Title | Issue Date |
| 7665954 | Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas ... | 02/23/2010 |
| 7530781 | Pump device A pump device for pressurizing a fluid to be fed, comprises: a rotary shaft, a bearing including a bearing surface adapted to face to the rotary shaft so that the rotary shaft is supported on the bearing surface in a rotatable manner, and an impeller fixed to the ro... | 05/12/2009 |
| 7524162 | Rotor for a rotating machine, in particular a steam turbine A rotor for a rotating machine, in particular a steam turbine includes at least one subregion composed of a metal structure having a reduced density and including a multiplicity of finely distributed cavities. ... | 04/28/2009 |
| 7476077 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrody... | 01/13/2009 |
| 7402020 | ACM cooling flow path and thrust load design An air cycle machine includes a housing having a compressor housing portion. A shaft is supported by the housing and includes a thrust runner. A hydrodynamic thrust bearing is arranged adjacent to the thrust runner and includes upstream and downstream sides. A compr... | 07/22/2008 |
| 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 |
| 7363762 | Gas turbine engines seal assembly and methods of assembling the same A method of assembling a gas turbine engine includes providing a gas turbine engine including a compressor, a combustor downstream from the compressor, and a turbine coupled to the compressor, and coupling a seal assembly aft of the compressor such that air discharg... | 04/29/2008 |
| 7354240 | Centrifugal turbo machine with axial thrust control member There is provided a centrifugal turbo machine comprising: a volute casing; a rotation axis coupled with the volute casing through a bearing; an impeller which is coupled to an end of the rotation axis and sucks fluid with a centrifugal force due to its rotation; and... | 04/08/2008 |
| 7347283 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 03/25/2008 |
| 7341138 | Conveyor idle roller assembly Idle roller assembly suitable for use in trough type belt conveyors is provided having an elongate shaft and spaced apart first and second roller bearing assemblies, each having mounted thereabout an annular hub. A cylindrical tubular roller is mounted to and spans ... | 03/11/2008 |
| 7338252 | Pump for the transporting of fluids and of mixtures of fluids A pump for the transporting of fluids and/or of mixtures of fluids includes a housing (1) and at least one restrictor gap seal which is provided in the housing (1) to reduce the pressure in a restrictor gap along a rotatable part (2) of the pump... | 03/04/2008 |
| 7326029 | Centrifugal pump and an impeller thereof The present invention relates to a centrifugal pump and an impeller thereof. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that the pump may be used without a risk of damaging a shaft seal or the like at capaci... | 02/05/2008 |
| 7322207 | Air refrigerant cooling apparatus and air refrigeration system using the air refigerant cooling apparatus An air refrigerant cooling apparatus has magnetic bearings with high reliability and high efficiency. The air refrigerant cooling apparatus includes a motor having a first magnetic bearing and a second magnetic bearing for supporting a shaft, a compressor and an exp... | 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 |
| 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 |
| 7314347 | Pressurized fluid bladeless turbine engine with opposing fluid intake assemblies A bladeless pressurized fluid turbine engine having a bladeless turbine, internal, concentric or circumferential shaft fluid ways which transmit pressurized gas to the turbine, and a pair of opposing pressurized fluid intake assemblies. Each intake assembly has a fi... | 01/01/2008 |
| 7290984 | Multistage pump A centrifugal pump includes plural pump stages, each comprising an impeller assembly, a stationary disc assembly and a diffuser assembly, all disposed about an impeller shaft. A floating impeller hub seal is supported by a diffuser assembly to minimize fluid recircu... | 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 |
| 7252474 | Sealing arrangement in a compressor A sealing arrangement for a compressor that compresses a gaseous mixture of air and fuel includes a pressurized air supply duct for supplying pressurized air into a leakage pathway defined between a compressor wheel and a housing of the compressor, which leakage pat... | 08/07/2007 |
| 7247001 | Impeller An impeller (1) according to the present invention has a disk-like main plate (10), a blade (20) joined to the main plate, and a side plate (30) having a suction port. A boss hole (12) is formed in a central portion of the main pla... | 07/24/2007 |
| 7244095 | Dual pressure Euler steam turbine A turbine, including a rotor on a shaft, and having in combination stationary nozzles discharging steam at a first pressure or pressures thereby producing impulse forces on the rotor; internal passages in the rotor producing a pressure head increase in the discharge... | 07/17/2007 |
| 7201557 | Rotary pressure exchanger A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end cover... | 04/10/2007 |
| 7198457 | Single-shaft multistage pump A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device a... | 04/03/2007 |
| 7166314 | Method of impregnation of food and vitamin C-containing egg and pidan-like egg obtained by this method The method of impregnation treatment for foods comprises impregnating the foods with a liquid component or a gas component by contacting the foods with the liquid component or the gas component after vacuum treatment or in the vacuum state and/or cooling the foods i... | 01/23/2007 |
| 7163368 | Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps An electrical submersible pump runner having a core layer and a wear layer affixed to the core layer. One embodiment of the invention provides an electrical submersible pump that includes a motor section and a centrifugal pump section. A seal section and rotary gas ... | 01/16/2007 |
| 7160082 | Turbocharger with balancing features An exemplary thrust collar for a turbocharger includes a substantially annular body that includes an axis of rotation, a bore, opposing end surfaces where one of the end surfaces is substantially normal to the axis of rotation and capable of seating a back end of co... | 01/09/2007 |
| 7156613 | Arrangement for bearing relief in a gas turbine In a gas turbine, the compressor load is reduced and the turbine load is increased for controlled bearing load reduction by forming a low-pressure chamber (8) that is shielded from the compressor air at the compressor (1) and a high-pressure chamber ( | 01/02/2007 |
| 7156627 | Compressor unit comprising a centrifugal compressor and an electric motor A compressor unit comprises a centrifugal compressor (1) for compressing a gas, having a rotor (2) with one or more compressor impellers (3), and an electric motor (4) having a stator (5) and a rotor (6), for driving the rot... | 01/02/2007 |
| 7150600 | Downhole turbomachines for handling two-phase flow Disclosed is a submersible pump assembly for handling two-phase flow. The pump assembly preferably includes a housing and a first stage. The first stage includes an impeller assembly and a diffuser assembly, which are collectively configured to produce a diagonal fl... | 12/19/2006 |
| 7112036 | Rotor and bearing system for a turbomachine A rotor and bearing system for a turbomachine. The turbomachine includes a drive shaft, an impeller positioned on the drive shaft, and a turbine positioned on the drive shaft proximate to the impeller. The bearing system comprises one gas journal bearing supporting ... | 09/26/2006 |
| 7104766 | Horizontal centrifugal pumping system The present invention provides a thrust bearing assembly and a horizontal skid utilized in a horizontal pumping system. In one embodiment, the thrust bearing assembly comprises a cylindrical open housing, at least one radial ball bearing, at least one rotating seal,... | 09/12/2006 |
| 7082763 | Exhaust gas turbocharger The invention concerns an exhaust gas turbocharger (1) having a shaft (2) on which a turbine wheel (4) and a compressor wheel (3) sit and which is guided in radial bearings (5, 6) and in at least one axial bearing (9), which... | 08/01/2006 |
| 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 |
| 7025152 | Using a rotating inner member to drive a tool in a hollow outer member A rotating inner member is used to drive a downhole tool housed within the hollow outer member of a dual-member drill string. The downhole tool preferably will be adapted to receive rotational energy from the inner member. In a preferred embodiment, the downhole too... | 04/11/2006 |
| 7018177 | Impeller lock assembly and method The impeller axial lock limits axial movement of an impeller disposed on a shaft. The impeller is spaced axially from a shaft sleeve disposed about the shaft. The impeller axial lock includes a ring member disposed about the shaft between the impeller and shaft slee... | 03/28/2006 |
| 6997674 | Pressurized fluid turbine engine A bladeless pressurized fluid turbine engine having a bladeless turbine, internal, concentric or circumferential shaft fluid ways which transmit pressurized gas to the turbine, and a pressurized fluid intake assembly. The intake assembly has a fixed outer housing, t... | 02/14/2006 |
| 6991424 | Gas friction pump A gas friction pump includes stationary (6) and rotatable (5) pump-active elements secured on a rotor shaft (4) and forming with the rotor shaft components of the rotor, with the rotor shaft (4) being supported by two, spaced from each ot... | 01/31/2006 |
| 6988869 | Turbine installation, especially steam turbine installation The invention relates to a turbine installation, especially a steam turbine installation. The inventive turbine installation comprises at least two partial turbines, each of the partial turbines having a rotor disk that extends along the main axis. Said rotor disks ... | 01/24/2006 |
| 6979174 | Stage pump having composite components A system and method is provided for pumping fluid. A pump incorporates composite components that provide a high degree of formability while maintaining wear resistance for use in potentially abrasive environments. The composite components may comprise one or more im... | 12/27/2005 |
| 6966748 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrody... | 11/22/2005 |