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Patent Searching and Data


Matches 151 - 200 out of 1,363

Document Document Title
WO/2003/083265A1
A rotary pump in which a bearing (2) is arranged between a scroll ring (3) and an eccentric shaft (1) and the shaft (1) rolls by the roller and leverage actions to cause a rotor (5) to scroll. The rotary pump is provided with a separator...  
WO/2003/074876A1
A gear pump comprising a motor section (10) having a cylindrical motor stator (14) and a motor rotor (18) disposed within the motor stator (14), a pair of gears (62, 64) meshing with each other and rotating with the driving of the motor ...  
WO/2003/058068A1
An orbital fluid pumping mechanism (37) having an outer tube (12) and an inner member (14) positioned substantially concentrically within the outer tube. Helical lobes (18, 22) form sealed pumping chambers to move the fluid.  
WO/2003/056180A1
The invention relates to a pump, particularly a vane pump or roller cell pump, provided with a two-stroke contour ring, a rotor, vanes, side plates, a casing, a casing cover and with lower vane grooves for supplying the lower vane surfac...  
WO2003000603A3
The invention relates to a device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants. Said device is characterised in that it comprises a double-threaded or multi-threa...  
WO2001096742B1
The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic flu...  
WO/2003/040565A2
A constant-flow rotary pump comprising a casing (1) wherein a rotating driving wheel (2) is provided onto which at least two vanes (7a, 7b) are provided apt to come into sliding contact with the wall of said casing, the casing and the dr...  
WO/2003/036094A2
The invention relates to a vacuum pump, especially for brake servo units in motor vehicles. Said vacuum pump comprises a housing in which a driven plastic rotor is received in a rotatable manner.  
WO2002097273A3
The invention relates to a pump, especially a vane pump, especially for supplying lubricating oil to internal combustion engines or for supplying gear oil, said pump having a variable working volume and at least one means of adjustment. ...  
WO2002077416A3
The problem of aligning the drive shaft (16) of a pressure clamped pump (10) with the output shaft (89) of a drive motor (80) in a hydraulic apparatus (70) is solved through the use of pressure clamped pump (10) having a housing (12) ada...  
WO/2003/010418A1
A rotary vane apparatus (AA) where the rotor (90) has a rotational axis (29) and carries at least one vane (140) which is supported by a vane guide apparatus (100,110) for rotation about a stator axis (12) which is spaced from the rotor ...  
WO/2003/006830A1
An improved hydraulic motor system, suitable for driving an automotive cooling fan or the like. The system is driven by grade gerotor set and and idle gerotor set which are stacked between a center plate and against a rear wall of a cyli...  
WO2002084117A3
The invention relates to a method and a device which guarantees a constant output variable, e.g. the displaced volume of lubricating oil in a feed pump (3) which is actuated by a speed variable drive device (4), e.g. an internal combusti...  
WO2002077451A3
The invention relates to a positive-displacement pump, consisting of an electric motor (1), a connecting housing (2) and a pump head (3) with pump gears mounted therein. In the present embodiment, the pump is configured as an external ge...  
WO/2003/000603A2
The invention relates to a device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants. Said device is characterised in that it comprises a double-threaded or multi-threa...  
WO/2002/101201A1
A reciprocating rotating engine (1) having a combustion chamber and a pumping chamber (28) is provided with two sets of free pistons and pumps vanes (13) each set having two pistons and two pumps vanes (13). The two sets of pistons an pu...  
WO/2002/097273A2
The invention relates to a pump, especially a vane pump, especially for supplying lubricating oil to internal combustion engines or for supplying gear oil, said pump having a variable working volume and at least one means of adjustment. ...  
WO/2002/093506A1
A fluid metering device (30) preferably includes a substantially linear series of intermeshing gears (310, 314). The device includes an inlet port (340I-342I) adjacent the intermeshing portion of each pair of gears (310-313) within the s...  
WO/2002/084117A2
The invention relates to a method and a device which guarantees a constant output variable, e.g. the displaced volume of lubricating oil in a feed pump (3) which is actuated by a speed variable drive device (4), e.g. an internal combusti...  
WO/2002/081913A2
The invention relates to a hydraulic pump unit comprising a hydrostatic system pump which is used to provide a hydraulic working system with hydraulic fluid via a pressure connection, also comprising a second pump which is used to suctio...  
WO/2002/077416A2
The problem of aligning the drive shaft (16) of a pressure clamped pump (10) with the output shaft (89) of a drive motor (80) in a hydraulic apparatus (70) is solved through the use of pressure clamped pump (10) having a housing (12) ada...  
WO/2002/077451A2
The invention relates to a positive-displacement pump, consisting of an electric motor (1), a connecting housing (2) and a pump head (3) with pump gears mounted therein. In the present embodiment, the pump is configured as an external ge...  
WO2002023699A3
Hydraulic drive systems require compact, efficient motor-pump aggregates. These requirements are met by integrating, as far as possible, an electromotor and one or more pumps into one device. This does however present this problem that o...  
WO/2002/057633A1
The pump for liquids has two identical crank spaces (2´, 2') adjacent to each other. In each of them a crank disk (3) is placed on a central pin (9), fitted with a piston rod pin (12). The piston rod pins (12) are connected by means of ...  
WO2001059288A3
An integrated brushless DC wet motor pump unit comprises a pump, a motor and a motor controller all contained within a housing. The motor includes a stator having stator coils fixed in relation to the housing and a motor rotor surroundin...  
WO/2002/032706A1
A power generation and an actuating system capable of, when an engine is operated, driving a rotary machine with a power from the engine to drive a motor generator for power generation and, when the engine is stopped, operating the motor...  
WO/2002/023041A1
The invention relates to a hydraulic system (1) comprising a main pump (12) and a precompression pump (5), whereby the outlet (8) of the precompression pump (5) is connected by a connecting line (9) to the inlet (11) of the main pump (12...  
WO/2002/023699A2
Hydraulic drive systems require compact, efficient motor-pump aggregates. These requirements are met by integrating, as far as possible, an electromotor and one or more pumps into one device. This does however present this problem that o...  
WO/2001/096742A1
The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic flu...  
WO/2001/092684A1
A well production apparatus includes a down-hole gear pump and a transport assembly to which the gear pump is attached. The transport assembly is formed from a string of modular pipe assemblies having one or more passages for carrying pr...  
WO/2001/073295A1
The invention relates to a motor-pump unit comprising an electromotor (1) and a pump (2). The invention is characterized in that the pump (2) is surrounded concentrically by the rotor/stator (1.3, 1.1) of the motor; the rotor (1.3) of th...  
WO/2001/065118A1
A hydraulic pressure transformer (10) for the conversion of an input hydraulic power to an output hydraulic power comprises a cam block (26) including a cam opening (30) defining a pump section (32) and motor section (34). The pump secti...  
WO/2001/059288A2
An integrated brushless DC wet motor pump unit comprises a pump, a motor and a motor controller all contained within a housing. The motor includes a stator having stator coils fixed in relation to the housing and a motor rotor surroundin...  
WO/2001/053701A1
This invention offers advantages and alternatives over the prior art by providing a dual port hydrualic fixed-displacement pump (20) which exhibits improved efficiency by diverting a portion of the flow of discharged fluid to the low-pre...  
WO/2001/053702A1
This invention offers advantages and alternatives over the prior art by providing a dual port hydraulic fixed displacement pump (20) which exhibits improved efficiency by limiting the volume of discharged fluid which is subjected to the ...  
WO/2001/053724A1
A dual gerotor pump (22) is used for an automatic transmission. A dual gerotor pump (22) which is driven by a central drive mechanism (34) has a first chamber (36) which continuously provides transmission fluid to the automatic transmiss...  
WO/2001/025638A1
Said pump consists of a drive axle (9) and a driven axle (9') on which three separate pump bodies are mounted, each of said bodies consisting of a drive gear (6a) (6b) (7) and a driven gear (6'a) (6'b) (7') that are mounted on the drive ...  
WO/2001/025639A1
Disclosed is a twin pump. The twin pump comprises a casing having an inlet port and an outlet port which are defined at center portions of lower and upper surfaces thereof and a pair of cylinders which are defined in a manner such that t...  
WO/2001/018397A1
The invention relates to a device for pumping fluid using a hydraulic pump (10) and a drive (12) whereby the hydraulic pump (10) is produced as an independent component with different types of drive devices (12) as additional components ...  
WO/2001/006127A1
A long-life, low maintenance, bi-directional vane-type water pump has a high degree of symmetry and operates with equal efficiency in either direction. The axial position of the drive shaft is controlled to permit improved lubrication by...  
WO/2000/077363A1
The invention relates to a method for operating a turbomachine and to a device for carrying out this method. The aim of the invention is to improve the degree of efficiency of a machine of this type. To this end, fresh air that has been ...  
WO/2000/075518A1
A pumping arrangement for pumping a liquid product (10), such as oil products or liquefied gas, from a tank or container (11) comprises a rotary, high capacity main pump (12), such as a centrifugal pump, to be submerged in the liquid pro...  
WO/2000/061971A1
The invention refers to control devices applied in a hydrostatic transmission, which includes a motor pump (MP), a hydrostatic circuit (HC 1 and HC 2) and an impelling pump (IP), which is formed by a rotor (1), a stator (2) and a body (3...  
WO2000043673B1
A multi-stage pump (48) has a housing (16) defining a plurality of stages (86, 88, 90) each having an internal rotor enclosure (62, 63, 64, 66, 68, 70, 72) with each enclosure having a non-pumping inlet and outlet (92, 94, 96, 98). A plu...  
WO/2000/055506A1
The present invention provides a two-stage centrifugal compressor. The compressor of this invention has a simplified refrigerant passage structure and effectively cools its electric motor in addition to bearing parts using an existing re...  
WO/2000/052339A1
Double acting multiplier of power is specified for transformation of hydraulic energy to mechanical power over, at the same time, multiplication of power. Principles of multiplier works are: oil, from the high pressure pump, through the ...  
WO/2000/043673A1
A multi-stage pump (48) has a housing (16) defining a plurality of stages (86, 88, 90) each having an internal rotor enclosure (62, 63, 64, 66, 68, 70, 72) with each enclosure having a non-pumping inlet and outlet (92, 94, 96, 98). A plu...  
WO/2000/042321A1
A hydraulic machine of the gerotor type. The machine uses two gerotors which are preferably coplanar, and positioned nearly concentric to each other. This dual arrangement approximately doubles the displacement of hydraulic fluid per rev...  
WO/2000/039465A1
The invention relates to a pump assembly comprising a vane-cell pump and a second hydraulic pump which is driven together with the same. The vane-cell pump has a suction area in which first pressure chambers between the vanes and second,...  
WO/2000/029730A1
A pump arrangement (10) is disclosed having a housing (12), a first pumping chamber (14) within the housing, a drive shaft (18) carried by the housing, and first pumping means (16) arranged for rotation within the first pumping chamber (...  

Matches 151 - 200 out of 1,363