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| Number | Title | Issue Date |
| 8109716 | Gas turbine engine systems involving hydrostatic face seals with anti-fouling provisioning Gas turbine engine systems involving hydrostatic face seals with anti-fouling provisioning are provided. In this regard, a representative turbine assembly for a gas turbine engine comprises: a turbine having a hydrostatic seal; the hydrostatic seal having a seal fac... | 02/07/2012 |
| 8105021 | Gas turbine engine systems involving hydrostatic face seals with integrated back-up seals Gas turbine engine systems involving hydrostatic face seals with integrated back-up seals are provided. In this regard, a representative seal assembly for a gas turbine engine includes: a stator assembly and a rotor assembly configured to operatively engage each oth... | 01/31/2012 |
| 7854587 | Centrifugal compressor and dry gas seal system for use in it The present invention relates to a centrifugal compressor using a dry gas seal system for protecting seal means. A multistage centrifugal compressor has primary dry gas seal means for preventing leakage of working gas from a machine inner side, and secondary dry gas... | 12/21/2010 |
| 7396215 | Water pump A water pump comprises a pump body, a cylindrical supporting portion, a pulley, a shaft portion, an impeller, a seal member, a pulley cylinder portion, a wall portion, a through-hole formed, a cover covering the wall portion and the pulley cylinder portion of the pu... | 07/08/2008 |
| 7311499 | Impeller apparatus for water pump and water pump An impeller apparatus for a water pump includes a driven side rotation body having a shaft portion and a plane portion positioned outside of the shaft portion in a radial direction, the driven side rotation body being arranged coaxially to a drive side rotation body... | 12/25/2007 |
| 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 |
| 7238001 | Seal arrangement The present invention relates to a seal arrangement in which a substantially labyrinth type seal is utilised between a rotating component and a stationary component such as a housing. An edged fin of the seal arrangement incorporates a slot nozzle or a slot nozzle i... | 07/03/2007 |
| 7147431 | Cooled turbine assembly A gas turbine engine (10) is provided with a stage of turbine blades (22) surrounded by hollow shroud segments (28). Cooling of the shroud segments (28) is achieved by providing a flow of engine leakage air from space volume (48) c... | 12/12/2006 |
| 7112033 | Hygienic mechanical seal flushing system for pure liquids in sanitary centrifugal pumps A sanitary centrifugal pump with a hygienic mechanical seal flushing system. The pump has a housing with a pumping chamber defined therein. An impeller is at least partially contained in the housing and is connected to a shaft for rotation. The rotation of the impel... | 09/26/2006 |
| 7108623 | Fan idler pulley A fan idler pulley having a threaded hub for attaching a fan shaft. The pulley also comprises a receiving portion for engaging a bearing. The bearing is further engaged with a cup. The entire assembly is mounted by a pin press fit though the cup into a mounting surf... | 09/19/2006 |
| 7021907 | Ventilation and purge of a hydrogen blower A hydrogen blower is provided and includes a housing having a drive unit and a compressor unit disposed therein. The drive unit is separated from the compressor unit by a neutral chamber, whereby the neutral chamber effectively seals the drive unit from the compress... | 04/04/2006 |
| 7008194 | Turbocharger Turbocharger comprising a rotor shaft (5), a turbine housing (2), a compressor housing (3) connected to the turbine housing (2), and including at least one air supply channel (13′) for supplying air to be compressed and at least ... | 03/07/2006 |
| 6976679 | Inter-fluid seal assembly and method therefor An inter-fluid brush seal assembly and associated method are provided. The seal assembly defines a gas passage for supplying gas to interfaces with a rotatable member. At least one of the interfaces is defined by a brush seal, and the flow of the gas through the int... | 12/20/2005 |
| 6969229 | Sealing system for centrifugal compressors which process lethal gases A sealing system (10) which ensures the safe operation of very high pressure centrifugal compressors which process lethal gases. The system comprises sealing means (18, 19) separated by an annular chamber (12), and a discharge line (32) f... | 11/29/2005 |
| 6960066 | Water pump with a hollow shaft, seal, and drain opening therein A water pump includes a rotation member, a hollow shaft portion having an opening on one end and connected to the rotation member for unitary rotating with the rotation member, an impeller connected to the shaft portion for unitary rotating with the shaft portion, a... | 11/01/2005 |
| 6918746 | Diesel engine water pump with thrust bearing preload An improved diesel engine water pump includes three main features that aid in extending the maintenance free life of the pump. The impeller shaft is carried by tapered roller shaft support bearings of which the impeller bearing has a floating outer race that is urge... | 07/19/2005 |
| 6854958 | Hydraulic turbine with enhanced dissolved oxygen A hydraulic turbine is adapted to introduce oxygen into a water flowing through a water passageway of a turbine. The turbine has a circumferential chamber formed between a rotating band and a stationary discharge ring. The chamber has a gas admission aperture for re... | 02/15/2005 |
| 6712580 | Seal apparatus for a water pump, rotation-support apparatus for a water pump, and a water pump A structure of a water pump is provided without increasing the cost thereof, or without enlarging the size to improve the durability of the water pump. A seal apparatus having a seal ring 13 and a slinger 14 in combination to prevent foreign matter fro... | 03/30/2004 |
| 6669437 | Regenerative fuel pump with leakage prevent grooves An electric-operated fuel pump has a vaned impeller that is disposed within a pumping chamber for rotation about an axis. The pumping chamber has a main channel extending arcuately about the axis to one axial side of the impeller. The main channel has a r... | 12/30/2003 |
| 6638015 | Water pump apparatus A water pump apparatus includes a body adapted to a fixed mounting surface of an engine and having a bore, a rotational shaft rotatably supported on the body via a bearing, an impeller fixed to the shaft and located in a pump chamber for supplying forcibl... | 10/28/2003 |
| 6582185 | Sealing system A sealing system to prevent loss of a process fluid from a device having a device opening and a rotating member operable for rotational movement within the device opening. A rotary shaft seal such as a labyrinth seal, seals the rotating member in the devi... | 06/24/2003 |
| 6574965 | Rotor tip bleed in gas turbine engines A gas turbine engine includes a compressor, a combustor, and turbine enclosed in an engine case with the compressor having a plurality of alternating rows of rotating blades and stationary vanes. The gas turbine engine also includes a substantially circum... | 06/10/2003 |
| 6561756 | Water pump To provide a water pump capable of preventing coolant leaked from a shaft sealing member from invading a bearing by a simple construction, a water pump has an outer ring of a bearing attached to an inner peripheral face of a pulley, an inner ring of the b... | 05/13/2003 |
| 6485256 | Seal apparatus for a water pump, rotation-support apparatus for a water pump, and a water pump A seal apparatus is comprised of a seal ring 13 and a singer 14 in combination to prevent foreign matter from progressing into the rolling bearing 6a. The amount of compression δ of the second seal lip 23, which occurs when the tip edge of the second sea... | 11/26/2002 |
| 6454523 | Spa with double sealed pump A water pool apparatus, such as a portable spa, pool, hot tub or recirculating bath tub having a double seal configuration. The water pool apparatus has a water recirculation system which includes a centrifugal pump. The centrifugal pump has a double seal... | 09/24/2002 |
| 6446699 | Cooling water pump A cooling water pump, for an internal-combustion engine in particular, with a casing provided with at least one bearing designed to support a pump shaft, with a sealing element devised to seal the bearing against a working space containing the cooling age... | 09/10/2002 |
| 6270312 | Cooling water pump for an internal combustion engine The invention relates to a cooling water pump for an internal combustion engine with a housing provided with a bearing designed to support a pump shaft and with a sealing element devised to seal the bearing against a working area containing the cooling ag... | 08/07/2001 |
| 6200089 | Coolant pump A coolant pump, in particular for use in internal combustion engines, includes a pump shaft carrying an impeller with substantially axial intake and radial discharge, and a casing provided with at least one roller bearing supporting the pump shaft, and a ... | 03/13/2001 |
| 6171070 | High-pressure reciprocating pumps A high-pressure reciprocating pump is constructed such that a plurality of plungers connected to a driver are made to move back and forth and intake channels or discharge channels are opened and closed by valves in synchronism with movements of the plunge... | 01/09/2001 |
| 6129507 | Method and device for reducing axial thrust in rotary machines and a centrifugal pump using same A method and device for reducing or eliminating axial thrust in a rotary machine such as a centrifugal pump or compressor by altering the fluid pressure in a cavity formed between a rotor and a housing. The device contains a disk placed along the rotor fo... | 10/10/2000 |
| 6126388 | Water pump and manufacturing method thereof A water pump is capable of avoiding adverse influence of water leakage from a swirl chamber to a bearing. The water pump includes a pump housing, a rotary shaft supported by a bearing mounted on a boss portion of the pump housing, an impeller fixed on an ... | 10/03/2000 |
| 6099243 | Centrifugal pump with seal cooling and debris flushing arrangement A centrifugal pump of the type in which fluid enters radially includes a debris blocking shield over a space around a shaft seal with a channel to supply energized fluid to near the center of the pump impeller. Apertures in the impeller then pass the flui... | 08/08/2000 |
| 6062812 | Liquid pump A liquid pump includes a body, a stationary member which is fluid-tightly fixed to the body through a seal plate, a shaft which is rotatably supported on the body and an impeller which is disposed in a vortex chamber formed in the body and having a disk p... | 05/16/2000 |
| 5865597 | Liquid pump for preventing contact between the sealing structure and pressurized liquid A pump incorporates a housing with a pump chamber and an internal bore communicating with the pump chamber, and a power driven impeller shaft supported in the housing by at least one bearing in the internal bore. The impeller shaft has an impeller in the ... | 02/02/1999 |
| 5785491 | Liquid pump having a driving unit and a driven unit with a resilient seal therebetween A liquid pump in which a perfect seal is achieved between a liquid and the atmosphere without the use of magnets includes a pump shaft rotatably supported inside housings and having an impeller secured thereto for impelling a liquid through the pump, a dr... | 07/28/1998 |
| 5738488 | Gland for transferring cooling medium to the rotor of a gas turbine A gas turbine rotor steam gland includes a steam inlet supply scroll for supplying steam through radial slots to an axially extending passage in the rotor for steam cooling of hot gas path component parts. The scroll decreases in diameter in the circumfer... | 04/14/1998 |
| 5718560 | Turbocompressor for non-ideal process gases An arrangement for a dry-gas sliding ring seal in a turbomachine which establishes ambient conditions in the region of the dry-gas sliding ring seals under which no fluid precipitates regardless of whether the machine is operating or not. By supplying hea... | 02/17/1998 |
| 5660521 | Water pump seal coolant wick A water seal coolant wick comprises a ring of absorbent material, such as felt, disposed in the drain cavity between the inner radial face of a water pump seal in a water pump and the bearing housing so that the wick is disposed in the leakage path betwee... | 08/26/1997 |
| 5653577 | Turbine, in particular Francis turbine An arrangement provided for turbine wheels (4) with cover disks (6, 7) which have a contactless sealing region (8, 9) to the housing. An apron-shaped free jet is created within a mixer zone (15) by increasing the transmission cross-section to the housing ... | 08/05/1997 |
| 5632492 | Sealing configuration for a passage of a shaft through a casing and method of operating the sealing configuration A sealing configuration for a passage through a stationary casing having a shaft leading through the passage and an inner space being enclosed by the stationary casing for receiving a fluid and from which the shaft emerges, includes at least one vapor cha... | 05/27/1997 |
