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| Number | Title | Issue Date |
| 7891958 | Impeller pump with reflux passages and apparatus using same A pump includes a pump part provided with an impeller having a plurality of blades for sucking and discharging a liquid; a pump case accommodating the pump part; a rotor installed to the impeller to rotate the impeller; a motor part accommodating a stator disposed a... | 02/22/2011 |
| 7819641 | Reverse flow cooling for fan motor An air mover, such as a cooling fan, comprises a motor and an impeller which is driven by the motor to generate a flow of air through a flowpath. The motor comprises at least one inlet opening and at least one outlet opening, each of which is in fluid communication ... | 10/26/2010 |
| 7794214 | Pump and method A pump for pumping a liquid comprises a rotor, a stator having at least one electrical winding and at least one cooling path, and a working conduit extending from a pump inlet to a pump outlet, the working conduit being in liquid communication with the cooling path ... | 09/14/2010 |
| 7699587 | Cooling channel for automotive HVAC blower assembly A centrifugal blower comprising a cooling air path having an inlet communicating with a blower space and an outlet communicating with the inlet of the motor airflow path, the cooling air path having an upstream portion that extends axially in the direction from the ... | 04/20/2010 |
| 7387502 | Method and apparatus for elimination of gases in pump feed/injection equipment A pumping apparatus for pumping a liquid from a source to a target including a motor, a first pump driven by the motor, a second pump driven by the motor and a separator in fluid communication with the first and second pump for separating a liquid received from a so... | 06/17/2008 |
| 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 |
| 7347674 | Pump A fluid pump of the type in which a housing assembly has a first sub-housing having an electric motor therein which is in line with a second sub-housing having the impeller therein, with the motor having a rotor shaft which extends through a seal of the first sub-ho... | 03/25/2008 |
| 7341436 | Open face cooling system for submersible motor An open face cooling system for a motorized, impeller-type, submersible pump operated in a host fluid ladened with solids, comprising an inlet in the pump housing close to the impeller and away from the axis of the pump into which fluid is forced by pump pressure, t... | 03/11/2008 |
| 7219500 | Compressor fuel gas conditioner A compressor fuel gas conditioner for a natural gas well having a compressor which utilizes natural gas from the well as a fuel. The conditioner includes a vortex tube having an inlet to receive compressed natural gas from the compressor, a warm gas outlet for gas w... | 05/22/2007 |
| 7160622 | Oil repelling agent An oil repelling agent to coat a dynamic pressure device, such as a fluid dynamic pressure bearing device, includes a UV coloring agent, a fluorine-based polymer and a solvent. In an exemplary embodiment of the invention, the concentration of the UV coloring agent c... | 01/09/2007 |
| 7144932 | Low-friction, high-dispersion synthetic resin composition containing fine particles of RB ceramic or CRB ceramic and a method for its preparation A synthetic resin composition includes at least one synthetic resin and RBC or CRBC particles dispersed in the resin. A method for preparing a synthetic resin composition includes mixing RBC or CRBC particles with a synthetic resin at a temperature near the melting ... | 12/05/2006 |
| 7118355 | Electric motor driven blower assembly with integral motor cooling duct An electric motor driven blower assembly provides for a complete air cooling duct running from the inside of the blower housing to the motor at the back of the housing. A vertical cooling tube on the scroll housing is mated to an open, moldable trough in the motor c... | 10/10/2006 |
| 7083395 | Pump system for pumping liquefied gases Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The cooling assembly has a converging pump-head-receiving aperture, a fluid inl... | 08/01/2006 |
| 7063519 | 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 contaminant-intolerant applications... | 06/20/2006 |
| 7048518 | Pump The present invention comprises a pump (10, 110) having a casing (14, 114) with at least one first hermetically sealed chamber (19, 119) and at least one second chamber (17, 117) adjacent to said first chamber, defining a passageway (1... | 05/23/2006 |
| 7033146 | Sealed magnetic drive sealless pump A magnetic drive sealless pump. The pump includes a casing having a fluid suction opening and fluid discharge opening. A shell is combined to the rear part of the casing, and the exterior of the shell is combined with a bracket having a motor for impelling and rotat... | 04/25/2006 |
| 7029246 | Rotor shaft bearing design and coupling mechanism An improved magnetic drive pump is disclosed with improved bearing support for the proximal and distal ends of the rotor shaft. Further, an improved mechanism to couple the inner magnet assembly to the rotor shaft is also disclosed. Finally a mechanism for sealing t... | 04/18/2006 |
| 6997686 | 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 rotating assembly is mounted... | 02/14/2006 |
| 6986648 | Electric pump A pump including an electric motor mounted in a motor casing, and a rotatable pumping member, the pumping member when rotated by the motor pumping a first fluid, there being a first fluid flow path for the first fluid from a high pressure side of the pumping member,... | 01/17/2006 |
| 6903470 | High speed generator with high-power rotating rectifiers cooling system A rectifier hub and associated cooling method provide increased cooling efficiency for rotating rectifier diodes in a dry cavity generator. The rectifier hub has an inner and an outer circumferential surface and includes at least one pair of flow passages, and at le... | 06/07/2005 |
| 6604906 | Centrifugal multiblade blower A centrifugal multiblade blower includes a first counter-flow prevention means that prevents part of air flowing through a scroll chamber from flowing through a first aperture defined between a multiblade fan and a suction-side case plate of a scroll casi... | 08/12/2003 |
| 6524083 | Magnetic coupling pump A partition partitions off a motor chamber and a pump chamber, through which a cooling water flows, a substantially cylindrical-cup shaped rotor is arranged in the pump chamber, a circuit board is disposed in the motor chamber to be in parallel to an annu... | 02/25/2003 |
| 6506034 | Liquid pump with a claw pole stator A fluid pump, in particular for the coolant and heating system of a motor vehicle, has a stator (21) of claw pole construction and a rotor (6), separated from the stator (21) by a pipe (11), which is immersed in the coolant and forms a vane wheel. The rot... | 01/14/2003 |
| 6447269 | 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 shaft, bearings supp... | 09/10/2002 |
| 6350109 | 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 case (5) and a rot... | 02/26/2002 |
| 6283726 | Radial blower, particularly for heating and air conditioning systems in automobiles A radial blower, particularly for heating and air-conditioning systems for automobiles, has a spiral blower housing that is provided with an air intake (5) in a housing lateral wall and with an air outlet out of the spiral housing. A blower drive motor fo... | 09/04/2001 |
| 6254361 | Shaftless canned rotor inline pipe pump A pump having a generally hollow housing, an annular rotor rotatively mounted inside the housing, an annular stator fixedly mounted inside the housing and peripherally surrounding the rotor and a closed impeller axially aligned with the annular rotor. The... | 07/03/2001 |
| 6241486 | Compact sealless screw pump A screw pump, includes a pump case having a fluid inlet, a pumping chamber, and a fluid discharge with at least two intermeshed parallel screw members rotatably mounted therein and in fluid communication with the fluid inlet and the fluid discharge. One s... | 06/05/2001 |
| 6200108 | Heat exchanging means for a pump motor using a bypass tube within a recirculating water system A pump which is designed to be mounted within a recirculating water system where a portion of the recirculating water is diverted (bypass water) and cause to flow through the motor chamber with this recirculating water to absorb heat that is produced duri... | 03/13/2001 |
| 6102672 | Motor-driven centrifugal air compressor with internal cooling airflow A motor-driven compressor comprises a motor that is carried by a motor-enclosing housing portion, a compressor wheel that is driven by the motor within a second housing portion forming a pressurized enclosure, and means for providing a flow of cooling air... | 08/15/2000 |
| 6022198 | Twin pump with a charging pump A double pump unit including two hydraulic pumps (1, 2) having drive shafts (5, 6) arranged coaxially with one another, which shafts are coupled with one another in a force-locking manner by a coupling piece (23). The coupling piece (23) is integrated in ... | 02/08/2000 |
| 6012909 | Centrifugal pump with an axial-field integral motor cooled by working fluid An integral axial-field motor pump, includes a housing assembly having a working fluid inlet, a working fluid discharge, and a stationary shaft mounted therein. A motor stator is mounted in the housing assembly radially surrounding the stationary shaft an... | 01/11/2000 |
| 5997261 | Pump motor having fluid cooling system A brushless water pump motor includes a pump housing having an impeller chamber with an impeller disposed therein, and a motor assembly coupled at a first end thereof to the pump housing. The motor assembly includes a stator assembly having laminations an... | 12/07/1999 |
| 5997264 | Shaft for a magnetic-drive centrifugal pump using a plurality of grooves The grooved shaft preferably has one or more axial grooves with semi-elliptical or U-shaped groove cross sections. Flat areas adjoin the axial groove or grooves. The flat areas are tapered tangentially relative to a substantially cylindrical shaft area. T... | 12/07/1999 |
| 5967764 | Axial fan with self-cooled motor A fan and electric motor combination (or a fan adapted to be used in such a combination) which provides improved cooling for the motor, using a centrifugal impeller including rotating impeller blades. The impeller blades span between an impeller inlet and... | 10/19/1999 |
| 5954488 | Blower assembly having integral air flow cooling duct A blower assembly includes a motor cover having (1) a body portion defining a motor cavity, (2) an air flow guide surface connected to an end of the body portion, the guide surface extending radially outwardly from the body portion, and (3) a cooling duct... | 09/21/1999 |
| 5845709 | Recirculating pump for electrical submersible pump system An electrical submersible pump (ESP) having tubing for recirculating fluid below the motor of the ESP for cooling purposes. By recirculating fluid below the motor, an ESP can then be placed below the perforations in a well casing, thereby taking advantage... | 12/08/1998 |
| 5743721 | Blower assembly having integral air flow cooling duct A blower assembly includes a motor cover having (1) a body portion defining a motor cavity, (2) an air flow guide surface connected to an end of the body portion, the guide surface extending radially outwardly from the body portion, and (3) a cooling duct... | 04/28/1998 |
| 5641275 | Grooved shaft for a magnetic-drive centrifugal pump The grooved shaft for a magnetic-drive centrifugal pump preferably has an axial groove with a semi-elliptical or U-shaped groove cross section. Adjoining the axial groove is a flat area which is tapered tangentially relative to a substantially cylindrical... | 06/24/1997 |
| 5591016 | Multistage canned motor pump having a thrust balancing disk A multistage canned motor pump comprising a pump section including a plurality of pump chambers and a motor section behind the pump section, both the sections having in common a single rotation shaft, and further a balance disk between the pump and motor ... | 01/07/1997 |
