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| Number | Title | Issue Date |
| 7367190 | Supercharger with electric motor In a supercharger (10) with an electric motor in accordance with the present invention, the electric motor (20) is arranged at a position adjacent to a compressor impeller (6), a center housing (14) has a cooling fluid flow path (34 | 05/06/2008 |
| 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 |
| 7265468 | Water repellent motor sleeve A high-speed universal motor running at over 10,000 or even over 20,000 rpm includes a non-rubbing water repellent sleeve that protects the bearings from moisture damage. Rather than having a sliding contact seal that can quickly wear out under such high speeds, the... | 09/04/2007 |
| 7220355 | Evaporative cooler pump strainer A strainer for a water pump includes a bottom panel and an upwardly extending side panel forming a cavity. The base of the water pump is received within the cavity and is removably secured to the filter. ... | 05/22/2007 |
| 6956308 | Dual flow circulation system for a mover A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 10/18/2005 |
| 6871512 | Motor-driven compressor A motor-driven compressor for compressing a refrigerant in an air conditioning system includes an electric motor, a swash plate-type compression unit driven by the electric motor, and a cooling channel for returning the refrigerant used by the air conditioning syste... | 03/29/2005 |
| 6345962 | Fluid operated pump A pump, for moving a pumped fluid using a pumping fluid, comprising an outer housing defining an interior volume. A compressible main tube, having an interior space, is located within the outer housing. Inlet and exit valves, both having internal check va... | 02/12/2002 |
| 6257834 | Method and arrangement for the indirect cooling of the flow in radial gaps formed between rotors and stators of turbomachines A method of cooling the flow in radial gaps formed between rotors and stators turbo machines is provided. The method includes the step of using water as a cooling fluid for the stator part adjacent to the radial gap. To this end, either at least one reces... | 07/10/2001 |
| 6158979 | Device for fixing a motor-fan unit on a motor vehicle element, in particular a heat exchanger A device for fixing a motor-fan unit to a heat exchanger comprising an inner support forming a housing for fixing the motor casing of the motor-fan unit and having a lateral opening providing a passage for ancillary equipment of the motor, an outer suppor... | 12/12/2000 |
| 6146113 | Compact hydraulic unit A compact hydraulic unit which can be used for cooling an electric motor sufficiently for continuous operation, having an annular cylindrical pressure medium container that has an outer external wall and an inner external wall as well as two end flanges, ... | 11/14/2000 |
| 6121698 | Oil cooled motor and pump apparatus Disclosed is a motor and pump which operate completely submerged in the pump fluid which uses surrounding fluid to cool the heat generated within the motor. The motor is also built with the intention that it can run in non-submerged applications by placin... | 09/19/2000 |
| 5930852 | Heat exchanging pump motor for usage 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 and caused to flow through the pump with this recirculating water to absorb heat that is produced during the operation of the... | 08/03/1999 |
| 5338162 | High-pressure cleaner with air-cooled motor A high-pressure cleaner includes a pump for pumping cleaning liquid, the drive mechanism of which pump is driven by an air-cooled motor. The cleaner also includes an air cooler adapted to be cooled by the cleaning liquid on its way to the pump and an air-... | 08/16/1994 |
| 5333680 | Cooling system for the chamber of a generator/transmission unit A cooling system for a generator is provided with a primary coolant loop containing a primary coolant for cooling the generator, and a secondary coolant loop provided with a secondary coolant medium for cooling the primary coolant loop in a heat exchanger... | 08/02/1994 |
| 5328344 | Enclosed type rotary compressor The rotary compressor is constructed such that two oil cooler pipes are arranged in the vicinity of two compressing elements located at the opposite ends of an electrically driving element. With this construction, cooling performances of the rotary compre... | 07/12/1994 |
| 5293929 | Cooling apparatus for machine parts such as pump seals Cooling apparatus for removing heat generated by friction between machine parts located within a liquid confining enclosure, for example, a seal surrounding the drive shaft of a motor driven pump used for below-ground pumping of sewage, the apparatus comp... | 03/15/1994 |
| 5215430 | Ignition-source free fuel pump Apparatus and method for making an immersed fuel transfer pump free of possible sources of ignition for fuel-vapor mixtures when the pump is run dry. The bearings and face seals are cooled by hydraulic oil used to power the pump, preferably through connec... | 06/01/1993 |
| 5046920 | Bearing cooling system in horizontal shaft water turbine generator A bearing cooling system for a water turbine having a rotatable shaft connected at one end to a movable blade portion and supported by a journal bearing and by a thrust bearing having a collar, comprises a heat pipe including a first container surrounding... | 09/10/1991 |
| 4913628 | Radial piston pump for pumping water The radial piston pump for pumping water, especially pure water, comprises pump housing, a central drive mechanism and a surrounding pump mechanism which has a plurality of piston-and-cylinder units radially oriented and distributed about its circumferenc... | 04/03/1990 |
| 4854829 | Structure for motor-compressor units used with refrigerant fluids The structure consists in a casing, the interior of which affords a chamber for the compressor and a housing for the motor, separated in fluid-tight fashion by a bulkhead through which a sealed passage is offered to the shaft of the compressor; such a cas... | 08/08/1989 |
| 4843659 | Tub apparatus A water supply and heating package, for a hot tub, spa, or pool comprising (a) a support, (b) water circulating structure carried by said support and including a pump and connections circulating water from and toward the interior of the hot tub, spa or pool, (... | 07/04/1989 |
| 4685867 | Submersible motor-pump A submersible pump-motor combination especially adaptable for use in a well casing containing well fluid and the motor filled with a lubricating fluid, and heat pipe means having a portion exposed to the motor fluid and another portion exposed to the well... | 08/11/1987 |
| 4632643 | Sump pump An electrical motor operated sump pump has a motor mounted above a centrifugal sump pump. The motor is fully enclosed in a chamber in which the top plate of the pump is the bottom wall. The motor is provided with a casing having air inlet openings in a bo... | 12/30/1986 |
| 4614482 | Pressure equalizing device for the electric motor of an encapsulated motor-pump assembly A submersible motor pump wherein the thermal barrier between the pump housing and the motor housing contains at least one bellows or at least one cylinder and piston unit storing a supply of liquid for admission into the motor housing so as to maintain th... | 09/30/1986 |
| 4585398 | Combination fluid tank, air/fluid cooler and prime mover/pump mounting system for a hydraulic power unit A combination fluid tank, air/fluid cooler, and mounting system for the prime mover and pump of a hydraulic power unit comprises a tank having a pair of spaced parallel laterally aligned prime mover and pump mounting plates on opposite walls thereof with ... | 04/29/1986 |
| 4541782 | Pump system A submersible pump system comprises a lowermost electrically driven pump unit (4,55) providing an inlet to the system for liquid to be pumped and one or more like pumps (5,55) positioned above it and connected in series. Electric power is supplied to the ... | 09/17/1985 |
| 4500263 | Electrically driven submersible pump system An electrically powered submersible pump system has a pipe stack in which a dielectric oil is circulated within tubular electric power supply conductors, for which the oil provides insulation, down to the pump head to cool and lubricate the motor bearings... | 02/19/1985 |
| 4373356 | Lubrication system for rotary compressor A lubrication system for use in a rotary compressor wherein the pressurized refrigerant fluid is passed through a precooler and returned to the compressor housing before passing through the discharge line to the refrigeration system. Oil entrained in the ... | 02/15/1983 |
| 4285197 | Isothermal chamber and heat engines constructed using said chamber Isothermal chamber comprising deformable walls and acting as a heat exchanger. It is constituted by two walls 3,3a of complementary shape defining between them an enclosure 4 containing a gas, the said walls having a deformable zone 5 and a rigid zone 6 p... | 08/25/1981 |
| 4225292 | Liquid cooled pump motor unit A pump motor assembly comprising a stator with windings, a rotor shaft mounting a rotor in said stator, a diffuser housing arranged adjacent said stator and enclosing at least partly the stator windings, means defining a flow channel in said diffuser hous... | 09/30/1980 |
| 4126406 | Cooling of downhole electric pump motors Efficient downhole cooling of the electric pump motor, motor protector, and thrust bearing of a submergible pump assembly in a high temperature environment is accomplished without significant modification of the pump assembly itself. Coolant flows through... | 11/21/1978 |
| 4052765 | Vacuum cleaner A housing in a vacuum cleaner is subdivided into a first space and a separate second space which does not communicate with the first space but is in heat-exchanging relationship with the first space. An impeller is located in the second space for sucking ... | 10/11/1977 |
| 4021148 | Hydraulic fluid devices A pump with a plunger assembly that is received within an outer housing containing a fluid. The plunger assembly includes a slidable sleeve portion defining a vertical channel. A pair of flexible membranes form outer and inner chambers within the vertical... | 05/03/1977 |
| 4006602 | Refrigeration apparatus and method The invention makes use of refrigerant passages or conduits in very effective heat-exchange relationship with the compression chamber and other hot parts of the compressor in a refrigeration system. The passages communicate at their inlet with an expansio... | 02/08/1977 |
| 3988896 | Geothermal energy pump and monitor system The operation of a geothermal well power-generation system is monitored by sensor, communication, and performance monitoring equipment permanently associated with the operating power generation system. Sensors detect changes in well water temperature, in ... | 11/02/1976 |
| 3957402 | Dewatering pump assembly having a heat exchanger A dewatering pump assembly for water pumping apparatus for pumping water from excavations or other holes in the ground and upwardly to a more or less remote discharge area. The apparatus finds particular utility for use, for example, by contractors, utili... | 05/18/1976 |
