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WO/2009/064337A1 |
A pump having an actuator mounted on a rotatable shaft, and a pump mounted on the shaft, which is selectively engageable with the actuator. When the actuator is actuated, the pump will receive rotational force from the shaft, creating a ...
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WO/2009/062783A1 |
The invention relates to a pump assembly (10) for the synchronous pressurization of two fluid circuits, comprising two internal gear pumps (11, 11') disposed together in a pump housing (12) and rotationally driven by the drive shafts (16...
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WO/2009/053188A1 |
The invention relates to an internal gear pump (10) for a braking system, in the pump housing (11) of which an inner toothed hollow wheel (12) and a gearwheel (13) engaging in the toothing of the hollow wheel (12) are mounted to rotate a...
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WO/2009/049991A1 |
The invention relates to an internal gear pump (10) for a brake system, in the pump housing (11) of which an internally toothed ring gear (12) and a pinion (13) meshing with the toothing of the ring gear (12) are pivotally supported abou...
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WO/2009/040515A1 |
A pump assembly (10) comprising: a first body portion (11); a second body portion (12); an inlet port (13); an outlet port (14); and a pumping chamber defined by a volume between the first and second body portions (11, 12), the pumping c...
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WO/2009/037100A1 |
A fuel pump (15) comprises a housing (20) and a part (24, 26) which moves during operation and bears on a housing region (22) at least indirectly. It is proposed that the fuel pump (15) comprises a coating (28) which is applied to the ho...
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WO/2009/038473A1 |
Abstract A progressing cavity pump (P) comprising at least an inner pump rotor (1, 1a, 1b) enclosed by at least an outer pump rotor (2, 2a, 2b) so as to collectively form one or more, in principle, separate pump cavities (19a, 19b) which...
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WO/2009/031473A1 |
Provided is an uniaxially eccentric screw pump (10) comprising a male screw type rotor (14). This male screw type rotor (14) includes a rotor base member made of an iron-group material, an intermediate layer formed on the surface of the ...
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WO/2009/025074A1 |
A rotor drive mechanism that can rotate a rotor at high speed. This is achieved by reducing the amount of heat and vibration produced when the rotor is rotated at high speed and by reducing contact pressure between the outer surface of t...
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WO/2009/024663A2 |
The present invention relates to a gear pump capable of delivering a fluid alternately into two separate use circuits without a switch. The gear pump (1) is characterized in that it includes two fluid outlet orifices (5, 6) connected to ...
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WO/2009/021903A1 |
The invention relates to an internal-gear pump or gerotor pump (10) having a housing (12), having an externally toothed inner gear (16) which is rotatable about a first axis (14), having an internally toothed ring gear (20) which is rota...
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WO/2009/019185A1 |
There is disclosed a working process for obtaining the pack clearance in hydraulic rotary volumetric machines (1, 20) including means (5, 16-17) to transmit the hydraulic fluid from an inlet mouth (10) to an outlet mouth (11) housed betw...
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WO/2009/012877A1 |
The rotary cylinder rotary slide positive-displacement pump described here makes it possible for three of four chamber walls to co-rotate during the pumping process. Said three chamber walls thus move together with the pump fluid through...
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WO/2009/012872A1 |
The invention relates to a rotor pump having an internally toothed outer ring and an externally toothed inner ring which is mounted therein and intermeshes therewith, wherein the outer ring and the inner ring are arranged axis-parallel t...
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WO/2009/010047A2 |
Disclosed is a recirculation pump for conveying a heat transfer liquid. Said recirculation pump is driven by an electric motor and is used for heating systems, for example. The recirculation pump comprises a driven spur gear-type ball se...
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WO/2009/003757A2 |
The invention relates to a pump arrangement for a hydraulic unit, particularly a vehicle brake system, having a first internal gear pump (2) with a first ring gear (20), a first pinion gear (23), and a first sickle-shaped segment piece (...
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WO/2008/152958A1 |
An internal gear pump has a housing (20) in which a circular tube-like space is formed, a driven rotor (40) having internal teeth and rotatably placed in the circular tube-like space, a drive rotor (50) having external teeth meshed with ...
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WO/2008/152713A1 |
A Roots pump has a simple structure enabling highly precise adjustment of a clearance between a rotor and a pump chamber. A casing (2) of the Roots pump (1) has a first casing (3) and a second casing (4) that are split along the directio...
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WO/2008/148472A1 |
The invention relates to a vane pump having a rotor (15'), in which a plurality of vanes (18) is disposed in a radially displaceable manner. The vane pump has at least one first control opening (22) for the suctioning of pressure media i...
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WO/2008/146352A1 |
A pump that not only eliminates the occurrence of a response delay of relief valve to thereby secure a desired oil delivery rate but also attains a reduction of drive torque. The pump is pump (60) comprising relief valve (66) adapted to,...
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WO/2008/141714A1 |
A gear pump, particularly for power-assisted steering, has a housing (12) in which a pump chamber (18) is formed, and a pump cover (30) which forms the boundary of the pump chamber (18). The pump cover (30) is provided with a sound-absor...
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WO/2008/138656A1 |
The invention relates to a pump assembly (10) for the synchronous pressurization of two fluid columns comprising two internal gear pumps (11, 12) disposed together in a housing (13) and driven by a common drive shaft (14), the pinions of...
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WO/2008/135433A1 |
The invention relates to a fuel pump for an injection system of an internal combustion engine. An inner wheel (16) of a low pressure feed pump is non-positively and positively connected to a drive shaft (1) via a connecting unit (13). Th...
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WO/2008/135159A1 |
The invention relates to a gear pump (10), in particular for a power assisted steering system, comprising a housing (12) with an upper and lower flange (14, 16), in addition to a non-return valve (50) and a pressure limiting valve (52). ...
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WO/2008/135326A1 |
The invention relates to a gear pump having two meshing gear wheels (4, 5) configured of a driven gear wheel (4) and a gear wheel (5) moving along with the same. A rotatably supported drive shaft (7) is provided for driving the gear whee...
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WO/2008/117604A1 |
A vane pump in which a rotor is mounted off-center inside a pumping chamber of a casing, and multiple vanes or blades are positioned around an eccentric axis of the rotor to be free to slide radially. The rotor is made therein with multi...
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WO/2008/116983A1 |
The invention relates to a sealed device for transmitting a rotational movement inside a chamber (7) from a drive shaft (1) to a driven shaft (2), said drive shaft (1) including at least one input section (3) extending through a wall (14...
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WO/2008/113396A1 |
The invention relates to a lubricating pinion, particularly for a lubricating device, for the application of a lubricant pumped, for example, through a lubricant pipeline by a lubricating pump from a reservoir onto at least one gear whee...
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WO/2008/113712A1 |
The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inl...
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WO/2008/110155A1 |
The invention relates to a pump or motor for fluid or gaseous media comprising a shaft (4), which faces a working part (13) and has a common inclined sliding surface (14) with the same, whereby the working part (13) limiting the pump wor...
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WO/2008/080574A1 |
The invention relates to a planetary rotation machine comprising at least one ring channel (1) which is curved along an at least partial arc and contains a piston (2) that can be moved in a fluid generating a movement, said piston being ...
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WO/2008/075507A1 |
Provided is a single-shaft eccentric screw pump capable of feeding and charging a fluid with high flow rate accuracy, low pulsation and a long life. In this single-shaft eccentric screw pump (11), a male screw rotor (12) is fitted into t...
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WO/2008/070955A1 |
A rotary device comprises a stator and a rotor. The stator has a cam surface. The rotor has a sleeve and a hub. There is a plurality of vanes reciprocatingly mounted on the rotor. There is a plurality of first longitudinal edge seals dis...
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WO/2008/061749A1 |
The invention relates to a pump, especially a vane-cell vacuum pump, for motor vehicle servobrake systems, said pump comprising a rotor (7) which is rotatably driven by a drive by means of a wrap spring clutch (23).
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WO/2008/054244A1 |
The invention can be used in rotary vane pumps, hydraulic motors, hydrostatic differential gears and transmissions with high efficiency and at a high pressure. The inventive rotary vane machine is provided, in each power variable length ...
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WO/2008/046423A1 |
The invention relates to an arrangement for transmitting torsional forces between a first part (11) which has an essentially planar, first bearing face, and a second part (12) which has an essentially planar, second bearing face (25) aga...
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WO/2008/047594A1 |
An electric motor stator is provided with a tube-like stator core, which has a plurality of teeth protruding inward in the diameter direction and slots formed between the teeth, and a coil arranged on the circumference of the teeth. An i...
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WO/2008/046828A1 |
The present invention relates to a rotary positive displacement pump for liquid medium having a main pumping mechanism driven by a magnetic coupling, said positive displacement pump further comprising an integrated, positive displacement...
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WO/2008/046005A2 |
A positive displacement pump (1) having a pump element having at least one variable volume displacement chamber (2), and a relief passage (7) for relieving pressure from the displacement chamber when the displacement chamber is decreasin...
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WO/2008/037525A1 |
The invention relates to a gear pump in which the amplitudes of the pressure impulses in a pressure chamber (26) can be significantly reduced by a suitable embodiment of a first groove (32) and/or a second groove (34).
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WO/2008/017543A1 |
The invention relates to an internal gear pump (1) for feeding a fluid, preferably fuel in an internal combustion engine, having an internally-toothed toothed ring (10) and an externally-toothed pinion (11) which meshes with the toothed ...
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WO2007128303B1 |
Proposed is an electrically driven rotary piston machine which operates as a rotary piston pump or rotary piston compressor, having a base housing (1) which holds an electric coil (2) and a pump head (3), wherein the pump working space i...
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WO/2008/012060A1 |
The invention relates to a geared pump for feeding products with high solid content such as granulate or animal feed, in which the two gear wheels (2) engaging with each other are enclosed in a housing (1) and are mounted, with the respe...
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WO/2008/000506A1 |
The invention refers to a Moineau type pump having at least one outer part (4; 44, 76) and one inner part (2; 42; 78) arranged inside the outer part (4; 44; 76), wherein at least one of the inner (2; 42; 78) and outer part (4; 44; 76) ac...
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WO/2007/143860A1 |
In a traditional displacement pump the volume of substances displaced or delivered is fixed due to the physical dimensions of the pump A variable displacement ring pump (10) is provided comprising a housing (12) circumscribing a pump cha...
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WO/2007/135261A1 |
According to the invention, the rotary pump consists of an external gear (13) with internal teeth (16) in the form of a squirrel cage, and an internal gear (9), housed in an off-centre manner in the interior of said external gear (13) an...
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WO/2007/131994A1 |
The invention relates to a gearwheel pump, composed of a housing having at least two gearwheels, which engage into one another, with in each case one shaft, which shafts are mounted in feed-medium-lubricated plain bearings, wherein a fee...
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WO/2007/128257A1 |
The invention relates to a delivery device, in particular a gerotor pump, for a fluid, in particular a cooling fluid, comprising a drive plane in which a drive device interacts with a displacer device, in particular a gerotor-external ro...
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WO/2007/129615A1 |
A trochoid pump (10) has a drive shaft (13), to one end of which a drive gear (17), which is a bevel gear, is fitted and through the other end of which an inner rotor (11) is penetrated, and also has an outer rotor (12), the center of wh...
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WO/2007/087704A1 |
A traditional variable displacement vane pump must be designed to provide maximum fluid pressure and thus experiences reduced energy efficiency when the system operating conditions do not necessitate such high requirements. A variable di...
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