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Matches 151 - 200 out of 1,339

Document Document Title
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...  
WO/2002/057633A1
The pump for liquids has two identical crank spaces (2ยด, 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 ...  
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...  
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 (...  
WO/2000/026506A1
The rotary piston machine (10) has a fixed housing (12) that can be closed by a front-face lid (24) and which contains at least two cylindrical bodies (40, 70) arranged therein, whereby a first inner cylinder body (40) rotates around a m...  
WO/2000/026540A1
The invention relates to a series for compressed air motors provided for different volumetric displacements comprising at least two compressed air motors (1, 100). Each compressed air motor has at least two intermeshing displacement elem...  
WO/2000/026539A1
The invention relates to a line of products for gear pumps having different delivery volumes and which comprise at least two gear pumps (1, 100). Each gear pump comprises at least two displacement elements (45, 104, 105) which intermesh ...  
WO/2000/025026A1
The invention relates to submersible pump with a transmission (10) and a compensator (24). The transmission (10) comprises a transmission housing (12) filled with a lubricating fluid. Said transmission housing accommodates a driven input...  
WO/2000/023251A1
An extrusion method and an extruder, the material to be extruded being fed with a material feeding device (1) into a radial pump unit included in the equipment. The radial pump unit comprises conical gearwheels (2) which are adjacently p...  
WO/2000/008338A1
A motor driven pump comprises a motor stator (30), a motor rotor (10) operable to rotate around the outside of the stator (30) and a pump mechanism (40, 50) driven by the motor rotor (10) and disposed at least partly inside the motor sta...  
WO/2000/005504A1
The invention relates to a gear pump (2) for the steering aid of a motor vehicle, which is integrated into the housing (1) of the transmission unit and enclosed by both the damping chamber (4) and the suction chamber (5), which chambers ...  
WO/1999/064745A1
A lubricating oil supplying arrangement for an apparatus having a rotating apparatus shaft with an oil pump is arranged at one end of the apparatus shaft (23) and is driven by this apparatus shaft (23). A pump housing (2) has a pocket (3...  
WO/1999/059859A1
A power steering device for assisting a steering operation by a hydraulic pressure generated from a hydraulic pump, comprising an electric motor, the hydraulic pump driven by the electric motor, and a control device which is positioned b...  
WO/1999/045272A1
A positive displacement pump-motor for pumping flammable liquids comprises a pump (139), an explosion-proof motor (110), a filter (113), a cylone gas separator (115), and a sump (140), that has an additional gas separator, internal baffl...  
WO/1999/022141A2
There is described pumping apparatus which consists of a Moineau pump coupled to a fluid pump and a primemover for providing rotational motion over the rotor of the Moineau pump. The inner rotor of the Moineau pump is preferably mounted ...  
WO/1999/020904A1
A roller vane motor for downhole drilling comprises a housing (1) and a rotor (2). The housing contains wing deflector cams (5) that divide the space between housing and rotor into chambers (8a, b). The rotor is equipped with cylindrical...  
WO/1999/001667A1
A down hole rotary pump (18) in a well (16) is driven by a down hole hydraulic motor (26). This arrangement eliminates the sucker rod drive that causes power loss and tubing wear and mitigates problems in completing directional and devia...  
WO/1998/025029A1
Motor pump unit in which the pump comprises a first rotating or orbiting displacement element, which performs a relative movement in relation to a second displacement element. The motor is an electric motor driving the pump directly by m...  
WO/1998/021478A1
A twin-cylinder impeller pump is disclosed. In the above pump, the twin-cylinder runner (3, 4) is provided with an elastic sealing means for removing any gap from the junction between the runner and the throat of a pump casing (10) with ...  
WO/1998/020259A2
At least two progressing cavity pump sections (16, 28) are connected in series. The flow volume rate of the second pump or pump section is less than the flow volume rate of the first pump or pump section. The cascade arrangement of progr...  
WO/1998/015456A1
A demand system is disclosed for controlling the output airflow from a pneumatic source in response to changes in airflow demand. The source includes a pressure sensitive bypass mechanism in fluid communication with a discharge manifold ...  
WO/1998/006610A1
A motor pump is built into the car body of a vehicle. Fastening means must be provided for that purpose on the motor pump. In the disclosed pump aggregate (4), the motor fastening screws (60, 60') with which the electromotor (20) is fast...  

Matches 151 - 200 out of 1,339