Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7371045 | Pump apparatus and method A pump including a pump housing, a fluid inlet, a fluid outlet, a pumping chamber in fluid communication with both the fluid inlet and the fluid outlet, a motor for pumping a working fluid, and a plate that is at least partially constructed of a heat conductive mate... | 05/13/2008 |
| 7331773 | Pump provided with exhaust valve device and hemodynamometer incorporating the same A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air into the pump chamber and to supply the introduced air to the air chamber. An exhaust va... | 02/19/2008 |
| 7193342 | Apparatus for cooling of electrical devices Electrical devices such as motors and generators create heat as they operate. This can lead to lower performance and life. Therefore, it is important to provide cooling for such devices. This is particularly true in heavy duty applications such as earthmoving or oth... | 03/20/2007 |
| 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 |
| 7182583 | Electro-hydraulic power unit with a rotary cam hydraulic power unit An electro-hydraulic power unit is disclosed that includes a housing filled with hydraulic fluid. A hydraulic power unit is disposed within the housing, the power unit having a mechanical power shaft. Additionally, an electric machine is disposed within the housing ... | 02/27/2007 |
| 7182585 | Electrically driven flow compressor The invention relates to an electrically driven flow compressor comprising a drive (2, 3)—and a flow compressor and a converter (5) for electrical supply and control of the drive unit (2, 3).According to the invention, the converter (5)... | 02/27/2007 |
| 7164218 | Electric motor and electric type compressor An electric motor includes a housing and a circular stator. The housing has an inner circumferential surface. The housing also has a first predetermined thermal expansion coefficient. The housing further has an elastic part. The stator core is pressed to an inside o... | 01/16/2007 |
| 7132771 | Motor for washing machine A motor for a drum type washing machine is disclosed, wherein noise is reduced. To this end, the drum type washing machine is provided with a washing motor having a stator fitted at a rear surface of a tub and having a plurality of slots on which a coil is wound; a ... | 11/07/2006 |
| 7131825 | Spindle-motor driven pump system The present invention is a compact pump that is powered by a brushless DC spindle-motor, as used in disk drives and CD-ROM drives. A hard drive type spindle-motor is a brushless DC motor that is highly balanced, very reliable, available at low cost, and is capable o... | 11/07/2006 |
| 7074019 | Rotor protector for wet-type rotor pump A wet rotor-type pump, in particular used for pumping a coolant in vehicle motors, comprises a pump impeller for feeding a fluid and a motor rotor connected with the pump impeller. In wet rotor-type pumps the motor rotor is cooled by the fluid to be pumped. ... | 07/11/2006 |
| 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 |
| 7045922 | Permanent-magnet synchronous electric motor with isolated rotor for circulation pumps of heating and/or conditioning systems A permanent-magnet synchronous electric motor with isolated rotor for circulation pumps of heating and/or conditioning systems having: a motor casing; a stator in the motor casing and having associated coils; a housing tightly isolated from the stator for hosting a ... | 05/16/2006 |
| 7040875 | Refrigerant pump with rotors in bearing A refrigerant pump includes a thin-walled hermetic vessel and a thick-walled hermetic vessel having an end inserted into and secured to an end of the thin-walled hermetic vessel. A stator of an electric motor unit is fitted outside the thin-walled hermetic vessel, w... | 05/09/2006 |
| 7015609 | Machine with a high-speed rotor A machine, having a high-speed rotor, and stationary components having connection surfaces for connecting the machine with external components and/or the stationary components with each other and provided with outer surface layers having a high friction coefficient.... | 03/21/2006 |
| 6986647 | Pump design for circulating supercritical carbon dioxide In accordance with an embodiment of the present invention, a pump assembly for circulating a supercritical fluid is disclosed. The pump assembly comprises an impeller for pumping fluid between a pump inlet and a pump outlet; a rotating pump shaft coupled to the impe... | 01/17/2006 |
| 6976827 | Rotor balancing device and method The present invention includes a rotor assembly comprising a shaft, a first component coaxially attached to the shaft for performing a first function in the rotor assembly and acting as a first counterbalance weight, and a second component coaxially attached to the ... | 12/20/2005 |
| 6919659 | Rotor assembly for an electric motor and electric motor with internal rotor An electric motor having a stator arranged on a sleeve; and a rotor assembly having a rotor shaft and at least one permanent magnet arranged on the rotor shaft, the rotor shaft being rotatbly housed in the sleeve. An external dimension of the rotor assembly and an i... | 07/19/2005 |
| 6908291 | Corrosion-resistant impeller for a magnetic-drive centrifugal pump An impeller for a magnetic-drive centrifugal pump includes a core for supporting a magnetic assembly of magnets. An inner barrier covers at least part of the magnets. The inner barrier hermetically isolates the magnetic assembly within the impeller. For example, in ... | 06/21/2005 |
| 6884043 | Fluid circulation path for motor pump A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressur... | 04/26/2005 |
| 6835051 | Motor with impeller/rotor combination The invention relates to a pump for fluid media, more particularly to a cooling water pump for internal combustion engines with an electric motor configured as a disk armature for actuating the pump, said electric motor being directly connected to an impeller (6 | 12/28/2004 |
| 6814549 | Liner for fluid pump motor An apparatus for protecting a fluid pump motor includes an electric motor for driving a pump head to pressurize a fluid. A liner is positioned in the motor air gap to prevent pressurized fluid from contacting one or more magnetic field producing elements of the stat... | 11/09/2004 |
| 6807821 | Compressor with internal accumulator for use in split compressor A rotary compressor having a housing with a motor and an internal accumulator located on the low pressure side and an oil sump located on the high pressure side. A sealing means positioned within the housing defines a first low pressure chamber and a second high pre... | 10/26/2004 |
| 6769882 | Pressure compensation for localized bearing heating in pumps driven by motors with fluid filled rotors A motor/pump system which uses an enclosed rotor shell, and also interior hydrodynamic bearings which are lubricated by the liquid being pumped, is arranged to minimize localized heating at the bearings to vaporization levels under high load conditions. To this end ... | 08/03/2004 |
| 6746218 | Compact electrohydraulic motor pump unit A compact electrohydraulic motor pump unit comprising a housing which forms a reservoir for a pressurized fluid and contains an electric motor, and which comprises a first housing sealing section, a second housing sealing section and a tubular housing mid-section th... | 06/08/2004 |
| 6733254 | Air pumping/extracting duplex pump An air pumping/extracting duplex pump for use in an inflatable device for selectively pumping air into/out of an air chamber of an inflatable device is constructed to include two connected housing, and an actuating mechanism mounted in the housings and manually rota... | 05/11/2004 |
| 6729858 | 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 temperature of the bearing chamber i... | 05/04/2004 |
| 6652250 | 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 rotor 21 encased... | 11/25/2003 |
| 6637216 | Compressor with internal accumulator for use in split compressor A rotary compressor having a housing with a motor and an internal accumulator located on the low pressure side and an oil sump located on the high pressure side. A sealing means positioned within the housing defines a first chamber and a second chamber. T... | 10/28/2003 |
| 6634870 | Hermetic compressor having improved motor cooling A hermetic refrigerant compressor including a compressor mechanism and a motor including a stator surrounded by a rotor attached to a crankshaft drivingly linked to the compressor mechanism. A first gap is formed between the rotor and stator, and a second... | 10/21/2003 |
| 6589029 | Self-contained motor driven hydraulic supply unit A compact hydraulic supply unit has a housing forming a reservoir for a pressure fluid, and includes a housing bottom, a housing cover and a housing middle part therebetween in the form of a profiled tube. An electric motor has a laminated stator core hel... | 07/08/2003 |
| 6471493 | Assembly structure for a turbo compressor The present invention relates to a turbo compressor which is capable of minimizing deformation of construction parts which may occur in welding or after welding and simplifying the manufacture and assembly by forming the outer diameter of a driving shaft ... | 10/29/2002 |
| 6467296 | Air conditioning system for vehicle An air conditioning apparatus for a vehicle that includes a multi-stage compressor, an internal heat exchanger, an external heat exchanger, a heat exchanger switching circuit, a cooling expansion passage and a heating expansion passage. The compressor has... | 10/22/2002 |
| 6293769 | Canned pump with dry rotor compartment An electric pump for a liquid has a rotor surrounded by a stator which is disposed in the flow path of the liquid, the rotor being disposed in a rotor compartment, which is sealed from the flow path of the liquid and is predominantly filled with a mixture... | 09/25/2001 |
| 6175173 | Tube pump A centrifugal pump has a housing with intake and discharge fittings at axially opposite ends. The electronic motor is supported on ribs within the pump housing and the motor casing is closed by the electronic control circuit for the motor which seals the ... | 01/16/2001 |
| 6140725 | Wet-running submersible motor for driving a centrifugal pump The wet-running submersible motor comprises a shaft and an electrical rotor arranged thereon, both being arranged in the rotor space of the motor. The shaft is formed hollow either on its longitudinal section on the pump side or over the whole length. On ... | 10/31/2000 |
| 6068455 | Long life pump system A system for pressurizing and pumping a fluid that may undergo substantial variations in temperature utilizes a motor with an enclosed rotor disposed adjacent and in driving relation to a centrifugal pump, but thermally isolated even though the fluid bein... | 05/30/2000 |
| 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 |
| 5908286 | Motor driven fuel pump and control system for internal combustion engines An in-tank motor-pump unit includes a motor driven gear pump, a pressure transducer, and a control module as a single integrated package establishing fuel flow at a constant pressure by creating a pulse-modulated motor drive having a fixed "off" and a var... | 06/01/1999 |
| 5713727 | Multi-stage pump powered by integral canned motors An in-line, multi-stage pump powered by integral canned electric motors. At least two pump units are connected in series in a pipeline. Each of said pump units includes a hollow housing having a hermetically sealed stator mounted therein. The stator is el... | 02/03/1998 |
| 5591011 | Multi-refrigerant compressor The oil sump and suction plenum of a hermetic compressor are in continuous fluid communication through an oil equalization port assembly. Additionally, communication is established between the oil sump and the suction plenum if pressure in the oil sump is... | 01/07/1997 |
