Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8128341 | Steam turbine Disclosed is a steam turbine with a casing, wherein a turbine shaft having a thrust-compensating piston is rotatably mounted inside the casing and directed along a rotation axis, wherein a flow passage is formed between the casing and the turbine shaft. The turbine ... | 03/06/2012 |
| 8016545 | Thrust balancing in a centrifugal pump A centrifugal pump includes a casing having an impeller chamber, an inlet, an outlet, and a bearing chamber. A shaft disposed within the casing has an impeller end and a motor end. The impeller is coupled to the impeller end of the shaft and is disposed within the i... | 09/13/2011 |
| 7997854 | Shrouded thrust bearings A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is ad... | 08/16/2011 |
| 7648332 | System and method for reducing thrust acting on submersible pumping components A technique is provided to facilitate pumping of fluids in a well environment. A submersible pumping system having a submersible pump incorporates features that manage thrust loads resulting from rotating impellers. The thrust reducing features cooperate with the ac... | 01/19/2010 |
| 7572097 | Impeller pump housing and impeller An impeller pump including a body and a cover assembled onto the body to form a housing. The body has a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft. An impeller is rotatably positioned in the housing with paddles at a periphery... | 08/11/2009 |
| 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 |
| 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 |
| 7281896 | Fan and impeller thereof An impeller includes a hub and at least one blade. In this case, the hub has at least one balancing portion disposed on hub and arranged with respect to a center of the hub. The balancing portion has at least one corner. The blades are disposed around the hub. In ad... | 10/16/2007 |
| 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 |
| 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 |
| 7244094 | Low noise impeller pumps An impeller pump for a fluid includes a rotary impeller (10; 20) and a pump casing (4). The pump casing defines a first pump channel (51) and a second pump channel (71). The impeller is disposed within the pump casing and opposes to the f... | 07/17/2007 |
| 7189003 | Turbomachine A turbomachine has a rotor shaft, which is mounted in a bearing arrangement containing a hydrodynamic axial bearing, and a rotor disposed on the rotor shaft. A hydrostatic axial bearing is additionally provided in the immediate vicinity of the hydrodynamic axial bea... | 03/13/2007 |
| 7182570 | Centrifugal pump Centrifugal pump, in particular drain pump for washing machines, comprising a casing (10) that defines a chamber (11) within which an impeller formed by a hub (14) and a disk (15) provided with blades (16) is capable of rotating. | 02/27/2007 |
| 7175384 | Centrifugal pump A centrifugal pump, the impeller (2) of the pump having one or more holes through the impeller adjacent to its hub. The hole or holes (7) are positioned between the vanes (3) of the impeller and closer to the hub than the periphery of the impell... | 02/13/2007 |
| 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 |
| 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 |
| 7108488 | Turbocharger with hydrodynamic foil bearings A turbocharger includes a foil bearing assembly mounted in a center housing between a compressor and a turbine of the turbocharger. The bearing assembly forms a unit installable into the center housing from one end thereof, and the center housing is a one-piece cons... | 09/19/2006 |
| 7047914 | Internal combustion engine combination with direct camshaft driven coolant pump A coolant pump for use with an internal combustion engine having a crankshaft and a camshaft driven by the crankshaft includes a pump housing fixedly mountable to the engine. The pump housing includes an inlet opening to receive coolant and an outlet opening to disc... | 05/23/2006 |
| 6787934 | Turbine system A turbine has a first rotating portion configured to rotate about an axis and a second rotating portion configured to rotate about the same axis. The first rotating portion has a plurality of first fluid outlets, and, the second rotating portion has a plurality of s... | 09/07/2004 |
| 6655910 | Turbocompressor with specially configured thrust washer A gas bearing system for use in a turbocompressor or similar device that embodies a uniquely configured thrust washer or disk that exhibits superior strength characteristics when the disk is rotated at high speed. The thrust washer is a generally circular... | 12/02/2003 |
| 6616423 | Turbo expander having automatically controlled compensation for axial thrust A turbo-machine includes a housing (1); a rotor (3) of a centripetally flow-through expansion turbine stage (4) overhung on the one end of the rotor shaft; a rotor of a radially flow-through compressor stage (6) overhung on the other end of the rotor shaf... | 09/09/2003 |
| 6607348 | Gas compressor To avoid formation of condensate or freezing in the tandem gas seals (12, 13) of a gas compressor (1), such as for use in the compression of production of natural gas, when the compressor is temporarily stopped for maintenance or repair of the compressor ... | 08/19/2003 |
| 6533537 | Impeller for circumferential current pump An impeller for a circumferential current pump does not generate a weld phenomenon and can make a structure of an injection molding metal mold simple. An impeller (2) for a circumferential current pump (1) is provided with a plurality of vane grooves (12)... | 03/18/2003 |
| 6517311 | Turbo-compressor A turbo-compressor having a housing and at least one rotor shaft pivotably supported in the housing, with a free shaft end and with a rotor connected with the other end of the rotor shaft. The free end of the rotor shaft facing away from the rotor project... | 02/11/2003 |
| 6367241 | Pressure-assisted electromagnetic thrust bearing A thrust compensation apparatus for high-speed rotating machinery includes an electromagnetic thrust bearing having a thrust rotor and a thrust stator, a first chamber filled with a pressurized medium on one side of the bearing, and a second chamber on th... | 04/09/2002 |
| 6264440 | Centrifugal pump having an axial thrust balancing system In accordance with a preferred embodiment of the invention, a centrifugal pump includes a housing having a housing cavity, an inlet, and an outlet. A shaft is located in the housing cavity. A radial bearing coaxially surrounds the shaft. The shaft and the... | 07/24/2001 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6019570 | Pressure balanced fuel pump impeller An electric motor turbine-type fuel pump has an impeller driven to rotate by the motor and received between opposed faces of a first body and a second body defining a pumping channel about the periphery of the impeller, each face has a plurality of circum... | 02/01/2000 |
| 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 |
| 5873697 | Method of improving centrifugal pump efficiency The method includes replacing conventional wear rings between a centrifugal pump casing inlet and the rotatable impeller having a plurality of circumferentially spaced blades. A substitute wear ring is formed of a thermoplastic polymer, POLY-ETHER-ETHER-K... | 02/23/1999 |
| 5862666 | Turbine engine having improved thrust bearing load control A modified turbine engine design in which control of the forward load on a thrust bearing is improved, while reducing or eliminating the need for the use of a balance piston is disclosed. The turbine engine has a longitudinal axis and comprises, a compres... | 01/26/1999 |
| 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 |
| 5795127 | Vertical shaft self-priming centrifugal pump A self-priming, vertical-shaft centrifugal pump having an impeller design which creates an upward thrust and which is heavy enough to carry an engine having a standard weight flywheel through a compression stroke. The pump is comprised of a vertical-shaft... | 08/18/1998 |
| 5605434 | Impeller having transport elements disposed on a pressure side of a cover disk for a centrifugal pump for dirty liquids An impeller of a centrifugal pump for transporting dirty liquids has transport elements, for example back-vanes or grooves disposed on the pressure side of a cover disk. The transport elements are arranged asymmetrically and are limited to one arc sector ... | 02/25/1997 |
| 5577885 | Condensing turbine having at least two seals for sealing off the turbine casing A condensing turbine includes a live-steam inlet, an exhaust-steam outlet and at least two seals for sealing off a turbine casing in the region of a turbine shaft carrying a turbine rotor. At least one of the seals is disposed on the live-steam side and o... | 11/26/1996 |
| 5542817 | Impeller for a rotary pump Notches in the impeller cooperate with balancing holes therein, and a liquid-receiving slot, to direct liquid across the leading edges of impeller vanes to flush away any accreted substances therefrom. In addition, a large diameter deflector coupled to th... | 08/06/1996 |
| 5540546 | Radial slot in a turbo-machine An apparatus comprises a rotatable shaft. A bush has a circumference with the bush being disposed about the shaft. The bush has a plurality of openings disposed throughout the circumference. Each of the plurality of openings is spaced from the remaining o... | 07/30/1996 |
