Patents in subclass Pumps/Axial Thrust Balancing Means For Rotary Pump And Motor
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07370697 | Thrust section wear preventor A thrust section for use above a motor preferably includes a housing, a thrust shaft, a thrust runner connected to the thrust shaft, a thrust bearing connected to the housing, and a motor lead guard. The motor is preferably positioned... |
05/13/2008 |
| 07229258 | Streamlined unobstructed one-pass axial-flow pump A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings (passive permanent and active electromagnetic) having impeller magnets on the impeller and stator... |
06/12/2007 |
| 07112036 | 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... |
09/26/2006 |
| 07104766 | 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,... |
09/12/2006 |
| 07082763 | 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 is... |
08/01/2006 |
| 07070398 | Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings including an axial bearing to support the impeller axially in the cavity. The axial bearing... |
07/04/2006 |
| 07063519 | Motor driven centrifugal compressor/blower This invention provides a small, high efficiency, oil free motor driven compressor/blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other... |
06/20/2006 |
| 07063512 | Pump stabilizer and method A vertically-disposed pump shaft is supported by an upward force against the pump shaft during periods of non use of the pump thereby off-loading bearings normally supportive of the shaft to prevent damage thereto when the pump is moved.... |
06/20/2006 |
| 06997686 | Motor driven two-stage centrifugal air-conditioning compressor A two-stage compressor for generating necessary pressure differential for air-conditioning applications with air-cooled, water-cooled and evaporative-cooled condensing systems using low-pressure refrigerant, such as R134a, is provided. A... |
02/14/2006 |
| 06881714 | Washing system The invention relates to a cleaning composition suitable for manually cleaning substrates. The composition comprises at least two immiscible liquid phases having one liquid-liquid interface with an interfacial tension of more than 5 mN/m,... |
04/19/2005 |
| 06877963 | Vacuum pump A rotor (12) is mounted in a stator (14) with radial magnetic bearings (16, 19) and with an axial magnetic bearing (40) in a contactless manner. The axial magnetic bearing (40) produces an axial magnetic field with a magnet coil (40) and... |
04/12/2005 |
| 06797173 | Method and apparatus for membrane recirculation and concentrate energy recovery in a reverse osmosis system An apparatus and method suitable for use in a reverse osmosis system has a process chamber having a feed inlet, a low pressure outlet and a high pressure outlet. A feed pump is used to increase the feed pressure to process the process... |
09/28/2004 |
| 06746216 | Scroll compressor with vented oil pump An oil pump for a scroll compressor has a bearing hub with a vent disposed between at least one fluid inlet in the bearing hub and a thrust washer. The vent provides an additional fluid flow path to equalize fluid pressure underneath the... |
06/08/2004 |
| 06739833 | Compressor with built-in motor, and mobile structure using the same A compressor in which an electric motor and a compressing mechanism are accommodated in a case, a main shaft and an auxiliary shaft of a rotating shaft of the motor are supported by a radial plain bearing and a rolling bearing with a... |
05/25/2004 |
| 06736609 | Support apparatus for movable member and pump apparatus A pump apparatus of simple construction has a bearing structure for which a lubricant is unnecessary. A flow passage for a refrigerant (liquid ammonia) is formed in a housing to provide communication between a suction port and a discharge... |
05/18/2004 |
| 06729858 | Thrust bearing cooling unit for a turbo compressor A system for cooling a turbo compressor includes two compressing parts on opposite ends of a rotational shaft driven by a motor. Fluid from a fluid chamber within the casing of the device is supplied to a bearing chamber when the... |
05/04/2004 |
| 06719540 | C3-cyano epothilone derivatives The present invention relates to compounds useful in the treatment of cancer or other proliferative diseases represented by formula I: ##STR1## wherein: Q is selected from the group consisting of ##STR2## M is O, NR.sub.9, or... |
04/13/2004 |
| 06652250 | Screw compressor having intermediate shaft bearing A screw compressor 1 comprises a screw compressor body 2 having a pair of female and male screw rotors 21 meshed with each other encased in a rotor casing 22, and a motor casing 4 having a motor 3 for driving a male rotor 21b of the screw... |
11/25/2003 |
| 06616423 | 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... |
09/09/2003 |
| 06579076 | Shaft load balancing system A shaft load balancing system includes a housing divided into a first chamber at a first operating pressure and a second chamber at a second, lower operating pressure. A shaft passes from the first chamber into the second chamber. The... |
06/17/2003 |
| 06551075 | Magnet pump with bi-directional axial self-alignment A magnet pump with bi-directional axial self-alignment comprises an inner chamber (12), provided with a suction duct (13) and a delivery duct (14); an impeller (25) located in said chamber (12) in a rotatably and axially movable manner,... |
04/22/2003 |
| 06517311 | 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... |
02/11/2003 |
| 06511298 | Electric motor pump with axial-flow impellers An electric motor pump with axial-flow impellers includes an electric motor having an output shaft both end portions of which are connected to axial-flow impeller units, and a pair of pump housings provided on both sides of the motor in... |
01/28/2003 |
| 06506031 | Screw compressor with axial thrust balancing and motor cooling device A screw compressor having balanced axial thrust includes a housing having a fluid inlet and a fluid outlet; a rotor disposed in the housing for receiving low pressure fluid from the inlet and discharging increased pressure fluid from the... |
01/14/2003 |
| 06499967 | Shaft axial compliance mechanism A hermetic compressor assembly including a housing having mounted therein a motor and a compression mechanism which are operatively coupled by a drive shaft. The drive shaft is rotatably received in a bearing mounted in the housing.... |
12/31/2002 |
| 06464472 | Circulation fan apparatus and circulation-fan driving motor A circulation fan apparatus including a hermetic vessel 1 containing a corrosive process gas therein, and a circulation fan 2 installed in the hermetic vessel, rotors 2-1, 2-2 of the circulation fan are rotatably supported by bearings,... |
10/15/2002 |
| 06457951 | Magnetically coupled canned rotary pump A pump has a housing plate, a housing can fixed to the plate and defining a chamber on a back face thereof, a bearing sleeve in the can fixed to the plate and extending rearward from the back face along an axis, and a rotor shaft... |
10/01/2002 |
| 06450780 | Method for generating over-pressure gas The invention relates to a method for generating over-pressure gas by means of a kinetic compressor which is coupled to a high-speed electric machine located on the same shaft with the compressor and comprising a rotor whose rotational... |
09/17/2002 |
| 06447269 | Potable water pump A water-cooled pump motor for delivering potable water in a demand system includes a centrifugal pump including a volute and an impeller in the volute, an electric motor driving the impeller having a hollow rotor shaft, a rotor on the... |
09/10/2002 |
| 06443710 | Magnetic pump A magnetic pump comprises a front casing (1) for forming an interior pump space (2) and having an inlet (3) for drawing in a fluid to be pumped and an outlet (4) for discharging the fluid, a rear casing (6) for forming a cylindrical space... |
09/03/2002 |
| 06416297 | Stopping means for preventing movement of the drive shaft of a variable displacement compressor A compressor that generates relatively little noise and prevents partial clutch engagement and gas leakage when the inclination of a cam plate is suddenly decreased by a great amount. The compressor includes a control valve that... |
07/09/2002 |
| 06367241 | 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... |
04/09/2002 |
| 06368075 | Pump with a magnetically supported rotor A tube pump in which the rotor is axially supported by permanent magnets at each end, so arranged as to apply attractive force across the gap between the rotor and a stator such that permanent magnets provide the sole radial support for... |
04/09/2002 |
| 06350109 | Rotary pump with immersed rotor A rotary pump (PP) for taking in a liquid such as a hydrocarbon comprises a pump wheel (1) secured to a rotor (4) which is immersed in a portion of the liquid taken in by the pump. A motor (11) having a stator element (111) mounted in a... |
02/26/2002 |
| 06345961 | Hydraulic energy recovery device A hydraulic pressure booster includes a housing having a pump portion, a shaft portion and a turbine portion. The pump portion has a pump inlet and a pump outlet. The turbine portion has a turbine inlet and a turbine outlet. The turbine... |
02/12/2002 |
| 06332758 | Air-bearing fan Air-bearing fan includes a dust-proof cover, a fan blade structure, a magnet, a stator, a sleeve, an electronic circuit board, a housing and a thrust disk. While the fan blade structure is rotating, air can be induced into a ring-shaped... |
12/25/2001 |
| 06322335 | Pump structure A pump includes a front casing and a rear casing for defining a space therebetween. An end of the shaft extends into the space with an impeller is supported by a bushing which makes the impeller is rotatable in the space. A wearing ring... |
11/27/2001 |
| 06264440 | 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.... |
07/24/2001 |
| 06255752 | Mounting for a turbo-machine rotor and its use The invention relates to a mounting for a turbo-machine rotor. Said mounting is characterized in that radial support of the rotor is assured by one or more permanent magnet bearings. One or more single-thrust sliding bearings provide... |
07/03/2001 |
| 06231302 | 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... |
05/15/2001 |
| 06227817 | Magnetically-suspended centrifugal blood pump A magnetically levitated blood pump having a single inlet for accepting blood and tangential volute. The pump includes an impeller formed on a hub that is suspended radially by permanent magnet bearings and axially adjusted via and thrust... |
05/08/2001 |
| 06196809 | Two-stage centrifugal compressor A low pressure-side first-stage compressor impeller and a high pressure-side second-stage compressor impeller are mounted respectively on opposite ends of a rotation shaft. A rotor of an electric motor for driving the two impellers is... |
03/06/2001 |
| 6158977 | Air cycle cooling system A cooling system is simple in structure, efficient, and durable due to a lowered burden on bearings and reduced loss of drive power. The cooling system includes a compressor having a first rotor for compressing air, a cooler for cooling... |
12/12/2000 |
| 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... |
08/22/2000 |
| 6095770 | Magnetically coupled pump A magnetically coupled pump comprising a housing partitioned into a pump chamber and a motor chamber by a partition wall. An impeller is mounted in the pump chamber. The stator of the motor is mounted in the motor chamber. The rotating... |
08/01/2000 |
| 6092997 | Compressor A compressor having a rotating member, which includes a drive shaft and a swash plate. A piston compresses gas and torsionally vibrates the rotating member. A damper is coupled to the shaft to reduce torsional vibrations of the rotating... |
07/25/2000 |
| 6091175 | Self-centering rotor bearing assembly for submersible pump motors The invention provides a submersible pumping system which includes a motor containing self-centering rotor bearing assemblies. Each rotor bearing assembly in accordance with the present invention includes a sleeve, a journal, and at least... |
07/18/2000 |
| 6030188 | Centrifugal blood pump assembly having magnetic material embedded in impeller vanes A centrifugal fluid pump assembly includes a housing having fluid inlet and outlet ports and an impeller having magnetic pieces disposed therein and accommodated for rotation in the housing for feeding the fluid, typically blood by a... |
02/29/2000 |
| 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... |
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... |
01/25/2000 |