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| Number | Title | Issue Date |
| RE43363 | Abrasion resistant pump thrust bearing A centrifugal pump has a stationary diffuser with a bore. A thrust bearing has a tubular portion that inserts into the bore. The thrust bearing has an external shoulder that contacts a support surface in the bore of the diffuser for transmitting downward thrust from... | 05/08/2012 |
| 7857578 | Preloading brace for gas turbine engine transportation An assembly for preventing damage to bearings of a gas turbine engine during transportation is provided. The assembly comprises a turbofan gas turbine engine having an engine casing and at least one turbine shaft supported by a plurality of bearings, and, a brace se... | 12/28/2010 |
| 7575413 | Abrasion resistant pump thrust bearing A centrifugal pump has a stationary diffuser with a bore. A thrust bearing has a tubular portion that inserts into the bore. The thrust bearing has an external shoulder that contacts a support surface in the bore of the diffuser for transmitting downward thrust from... | 08/18/2009 |
| 7465148 | Air-guiding system between compressor and turbine of a gas turbine engine An air-guiding system between a compressor and a turbine of a gas turbine engine includes an air chamber (5) being delimited by the inner casing of the combustion chamber (4) and first and second seals (7, 8) towards the rotating compressor shaf... | 12/16/2008 |
| 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 |
| 7396197 | Force-balanced air supply for pneumatic tools The non-axial force exerted on a pneumatic tool by a non-axial air supply is balanced to allow for uniformly radially distributed compliance forces on the tool. An annular air ring is disposed around the pneumatic tool, covering an air inlet port. Air is supplied by... | 07/08/2008 |
| 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 |
| 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 |
| 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 |
| 7201238 | Low friction face sealed reaction turbine rotors Rotary jetting tool including a rotor with axially-opposed pressure-balanced mechanical face seals. Vented upper mechanical face seal enables the rotor to be operated with the relativity low starting torque achievable using reaction forces from offset jets energized... | 04/10/2007 |
| 7198456 | Floating head reaction turbine rotor with improved jet quality A rotary jetting tool including a pressure-balanced rotor, which is achieved using a vented volume. Axial movement of the rotor relative to the housing caused by pressure imbalances acting on the rotor selectively uncovers or opens a vent that places the volume in f... | 04/03/2007 |
| 7195443 | Variable pressure-controlled cooling scheme and thrust control arrangements for a steam turbine A method and system for actively controlling thrust pressure in a steam turbine is disclosed. The method may comprise monitoring a thrust pressure affecting a thrust fitting in a steam turbine, and adjusting the thrust pressure to maintain a desired thrust pressure ... | 03/27/2007 |
| 7175385 | Mounting of the rotor of a gas turbine The rotor (5) of a gas turbine containing a compressor part (1) and a turbine part (3) is mounted in an axial thrust bearing (19) and in two radial journal bearings (16, 17). One of the bearings is a journal bearing (16) arr... | 02/13/2007 |
| 7150148 | Thrust receiving structure of torque converter cover A front cover 5 of a converter cover 4 is formed with a punched hole 12, a thrust bearing 13 having the same outer shape as that of the punched hole 12 is fitted to the punched hole 12, a bearing housing 14 is fitted ... | 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 |
| 7004719 | Axial thrust balancing system for a centrifugal compressor, having improved safety characteristics An axial thrust balancing system for a centrifugal compressor, having improved safety characteristics, the centrifugal compressor comprising a rotor having impellers adjacent to each other and connected by a shaft, the rotor rotating in a stator, the centrifugal com... | 02/28/2006 |
| 6997688 | Secondary containment for a magnetic-drive centrifugal pump A centrifugal pump includes a housing having a housing cavity, an inlet, and an outlet. A pump shaft is located within the housing cavity. A radial bearing coaxially surrounds the pump shaft. The shaft and the radial bearing are rotatable with respect to one another... | 02/14/2006 |
| 6695575 | Turbine method for discharging leakage fluid The invention relates to a turbine (1) having a rotor (2), which has a bladed area (3) for rotor blades (4) and a thrust compensation piston (5). The thrust compensation piston (5) has a hot side (6), which faces the bladed area (3), and a cold side (7), ... | 02/24/2004 |
| 6609883 | Rotary pump with hydrodynamically suspended impeller This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blade... | 08/26/2003 |
| 6443690 | Steam cooling system for balance piston of a steam turbine and associated methods A steam cooling system (30) and associated methods are provided which have a first high pressure (HP) steam turbine (12) having a straight through configuration, a second intermediate pressure (IP) steam turbine (16) having a straight through configuratio... | 09/03/2002 |
| 6422809 | Gas turbine arrangement A gas turbine arrangement includes a compressor (2) with a compressor rotor (7), a turbine (3) with a turbine rotor (12) and connected with the compressor (2), and a balancing member (18) connected with the turbine rotor (12) and arranged to counteract ax... | 07/23/2002 |
| 6345952 | Steam turbine A steam turbine has a turbine shaft directed along a turbine axis. A plurality of turbine stages, each include a guide-blade structure and a moving-blade configuration located axially downstream of the guide-blade structure. The guide-blade structure and ... | 02/12/2002 |
| 6305901 | Steam turbine A steam turbine has a high-pressure turbine section and a medium-pressure turbine section fluidically connected to the high-pressure turbine section. The high-pressure turbine section is a chamber configuration and the medium-pressure turbine section is a... | 10/23/2001 |
| 6231302 | Thermal control system for gas-bearing turbocompressors A thrust control system for use with a turbocompressor having gas bearings. More specifically, the system concerns an arrangement of gas bearings for use in a turbocompressor or other device where a large temperature difference between the turbine and the... | 05/15/2001 |
| 6232688 | High speed magnetic thrust disk The present invention contemplates an internally reinforced high-speed magnetic thrust disk. In one embodiment the internally reinforced composite thrust disk comprises a plurality of high strength fibers coupled together by a soft magnetic alloy. Further... | 05/15/2001 |
| 6227797 | Rotary pump with hydrodynamically suspended impeller This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blade... | 05/08/2001 |
| 6193462 | Thrust balance device A flow channel and pressure equalizing sections introduce a fluid having substantially no angular momentum into a thrust balance chamber of a thrust balance device. The introduction of this fluid reduces the angular momentum of the fluid in the thrust bal... | 02/27/2001 |
| 6179554 | Low friction fluid bearing and turbine using same A low friction bearing comprises a first element having a first surface. A second element having a second surface is rotatable about a centerline relative to the first element. A flow passage extends radially outward between the first surface and the seco... | 01/30/2001 |
| 6132168 | Balancing a pressure drop across ring seals in gas turbine engines A gas turbine engine includes a plurality of seal stages minimizing leakage of high pressure air from a high pressure cavity into a low pressure cavity. The plurality of seal stages includes an upstream seal stage, substantially adjacent to the high press... | 10/17/2000 |
| 6106224 | Downthrust pads for submersible centrifugal pumps A submersible centrifugal pump is claimed which includes an inner downthrust washer for receiving the downthrust load from the upward movement of the produced fluid, and an outer sealing washer, which is a non-load bearing washer, for allowing the reposit... | 08/22/2000 |
| 6036435 | Thrust bearing A thrust bearing for a rotating member that is subject to axial forces causing movement in an axial direction of a rotating member. A sealing surface is positioned on at least a portion of the rotating member. A bearing is positioned adjacent the rotating... | 03/14/2000 |
| 6036433 | Method of balancing thrust loads in steam turbines In a turbine construction which includes a rotor having at least one radial step formed therein, and at least one packing ring assembly mounted in a stationary turbine component and axially spanning the radial step, a thrust balancing arrangement for the ... | 03/14/2000 |
| 6017184 | Turbocharger integrated bearing system An integrated bearing system with journal and thrust bearings is incorporated in a single unit centrally pinned to the bearing housing and having integral thrust surface and journal surface lubrication grooves in combination with turbine and compressor wh... | 01/25/2000 |
| 6012898 | Submerged motor pump A submerged motor pump (4) has an auxiliary bearing assembly (19, 20) for supporting a rotatable main shaft (9) when the submerged motor pump is not in an operating condition or operates in a transient condition. The submerged motor pump includes a pump c... | 01/11/2000 |
| 5957656 | Pump mounted thrust bearing A thrust bearing assembly for a surface mounted centrifugal pump utilizes the pump liquid for lubrication of a thrust bearing and radial bearings. The thrust bearing mounts to the rearward end of the intake chamber. A communication passage extends between... | 09/28/1999 |
| 5927941 | High-temperature motor pump A high temperature pump is compact in size, reasonable in manufacturing cost and capable of stable pumping operation. The high-temperature motor pump includes a pump portion for pumping a liquid, a motor portion integrated with the pump portion for drivin... | 07/27/1999 |
| 5836739 | Gas turbine engine A gas turbine engine comprises turbine and compressor elements on a rotary shaft. The shaft is rotably mounted on preloaded axial thrust bearings. As it rotates in use the turbine and compressor elements create an axial thrust load on the bearings. Accord... | 11/17/1998 |
| 5827040 | Hydrostatic augmentation of a compliant foil hydrodynamic fluid film thrust bearing A system to hydrostatically augment the thrust load capacity of a bilateral compliant foil hydrodynamic fluid film thrust bearing for a turbomachine is disclosed. A plurality of channels and fixed orifices are provided in the bearing thrust plate to deliv... | 10/27/1998 |
| 5803708 | Damping device for a rotating machine A damping device is provided for damping the vibration of a rotatable shaft. The shaft has a shaft end portion and a detachable thrust collar. The thrust collar has an elongated portion which extends in the direction of the axis of the rotatable shaft and... | 09/08/1998 |
| 5791868 | Thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing A thrust load compensating system for a compliant foil hydrodynamic fluid film thrust bearing is disclosed. The system includes an end cap over the free end of a rotary machine shaft, a compliant foil hydrodynamic fluid film journal bearing located at the... | 08/11/1998 |
