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WO/2000/028218A1 |
The invention concerns a rotary hydraulic machine having a stator and a rotor with vanes defining chambers with variable volume with the stator. The stator (100) comprises a peripheral wall (130) centred on the axis (O) and provided with...
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WO/2000/025000A1 |
The invention relates to a drive head comprising a housing (12) with two passages (24, 26), which face away from one another, for a rod assembly (10) and a rotary-driven sleeve (30). Said sleeve surrounds a section of the rod assembly (1...
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WO/2000/020759A1 |
A gear pump exhibiting improved efficiency over a broader range of fluid viscosity and pump speed includes a compression zone defined between each of a pair of pump gears and internal walls of a gear chamber, wherein the compression zone...
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WO/2000/014411A1 |
A vane type rotary machine such as a vane pump and a vane motor, wherein a rotor (15) having vanes (60) is stored in a cam casing (10) and a spindle (40) of a rotor (15) is pivoted rotatably on bearing parts (200, 250), working fluid on ...
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WO/2000/009888A2 |
The invention relates to a pump for delivering a fluid, especially a vane-cell pump, comprising a delivery device which is accommodated in a casing (2), a casing cover (3) located on the face, and optionally comprising a bearing flange (...
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WO/2000/009887A2 |
The invention relates to a pump for delivering a fluid, especially a vane-cell pump, comprising a delivery device (1) which is accommodated in a casing (2). The casing (2) is closed on one side by a casing cover (3), and the other side i...
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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...
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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 ...
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WO/2000/003813A2 |
A device for pumping paint comprises a pump house adapted to receive paint from a paint source, a pump shaft (8) for driving a pump member to rotate inside the house for pumping paint therethrough. The pump shaft is through an intermedia...
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WO/2000/001433A1 |
A DC brushless motor of a roller pump (5) driven to transport liquid in a flexible tube is controlled by a controller according to a count by a pulse counter that receives the output from a frequency quadrupler that quadruples the number...
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WO/1999/056019A1 |
The aim of the invention is to provide a method and a hydraulic pump with which it is possible to control pressure without separate and/or additional pressure control valves. To this end, a method is provided for controlling the hydrauli...
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WO/1999/050559A1 |
The invention relates to an internal gear pump for delivering liquid media, preferably lubricating oil for internal combustion engines or groups belonging thereto. Said internal gear pump comprises a blind hole which is situated on the s...
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WO/1999/049220A1 |
A screw dry vacuum pump, wherein a shaft part (15b) of the rotor is provided with timing gears (16, 19) meshing with each other and a locking mechanism (17) for fixing the timing gears (16, 19) to the shaft part (15b), the shaft part (15...
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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...
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WO/1999/040324A1 |
Sealing system for roller bearing mountings of gear pump rotors and similar rotor shafts to provide protection against the medium to be pumped in pumps and mixers, in addition to other sealing elements for rotor shafts in the form of sea...
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WO/1999/039103A1 |
A pump assembly comprises a hydraulic fluid pump (10) having a housing (12) assembled from a plurality of housing components (14, 16, 18) that are pinned (68) together rather than being claimped together by bolts. The pump is disposed in...
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WO/1999/039099A1 |
A lubrication path in a gerotor motor (10) extending in the face of the rotor (45) or an adjoining surface (27) from a gerotor cell (47) having a relatively high pressure to the central cavity (52) of the device to provide cooling and lu...
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WO/1999/037922A1 |
A gear pump (11) comprising a gearwheel (14) with external toothing and an annular gear (15) with internal toothing which is guided into the cylindrical recess (18) of a housing (12) and which, together with the gearwheel (14), rotates a...
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WO/1999/036700A1 |
The invention relates to a piston pump for a high-pressure cleaning device having a pump housing in which at least one pump chamber is provided with an inlet valve and an outlet valve. A reciprocating driven piston is immersed in said pu...
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WO/1999/034498A1 |
The invention relates to a drive mechanism for a pump (10) using a drive motor (20) whose rotational speed and torque are influenced by a frequency converter (30). The frequency converter (30) is arranged on a cooling body (40) that is c...
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WO/1999/034116A1 |
The high efficiency gear pump (10) includes a pump housing (12) which defines an internal pump chamber (14). The pump chamber includes opposed first and second elongate gear receiving sections (30, 34) spaced on opposite sides of a centr...
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WO/1999/030030A1 |
The invention relates to a drive device (10) which has small dimensions in an axial and radial direction. The small dimensions of said device are a result of the brake body (202) of a friction brake (200) provided in the drive device bei...
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WO/1999/024717A1 |
The invention relates to a drive head, comprising a housing (12) with passages (24, 26) for the rod assembly (10) and a rotary-driven sleeve (30) which is arranged in said housing. Said sleeve (30) surrounds a section of the rod assembly...
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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 ...
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WO/1999/022143A1 |
The invention relates to a regulating device for positive-displacement pumps, especially vane pumps and roller cell pumps. A pressure chamber of the pump can be connected to an outlet duct via a bore hole (13) in which a control piston (...
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WO/1999/019629A1 |
The invention relates to a positive-displacement pump to feed pressurized fluid from a container to a consumer, especially to the power steering system of a motor vehicle, wherein a pump package (2) with a rotor (3), a cam ring (4) and s...
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WO/1999/009322A1 |
A suction pump (22) suitable for use in a fuel dispensing system (20) or other fluid delivery system for volatile liquids. The suction pump includes a pump casing that defines a pump chamber (52) with inlet and outlet ports. A rotor (54)...
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WO/1999/008000A1 |
The invention relates to a hydraulic unit comprising a rotor and a stator forming a housing. The hydraulic unit has a bearing provided for between the housing and the rotor, which bearing absorbs axial and radial forces. The rotor is con...
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WO/1998/059172A1 |
The invention relates to a pump for conveying a medium, especially hydraulic oil, comprising a flow regulating-valve which influences the flow of the medium being conveyed by the pump, and a flow channel which can be opened by said valve...
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WO/1998/048172A1 |
A pump (10) including a flexible impeller (20) and a housing (40) having a pump end cover (50), the pump end cover (50) comprising a transparent safety cover (52) able to be attached to the housing (40), a transparent heat resistant inse...
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WO/1998/046884A1 |
A vane-cell pump has a rotor that receives a plurality of radially movable vanes, a lifting ring which surrounds the rotor and forms at least one suction and one pressure region, and at least one compression plate which forms a lateral d...
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WO/1998/042984A1 |
A vane-type rotary fluid displacing device (1) including an external member (2) co-operating with an internal member (3), the members being relatively rotatable about a common axis, the external member (2) having an internal peripheral s...
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WO/1998/042985A1 |
Gear pump comprising a pump rotor (8) and an idler wheel (38), which is arranged within the pump rotor (8) and is being driven by engagement with the rotor. A magnetic coupling (30, 31) for the transmission of a drive force to the pump r...
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WO/1998/038428A1 |
A hydraulic unit to be applied to a power apparatus which produces power by utilizing a hydraulic pressure generated by a hydraulic pump (7). The hydraulic pump (7) has a pump main part (9a) and a rotary shaft (10) which protrudes from b...
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WO/1998/035135A1 |
Screw conveyor (1) for the transport of liquid substances and/or lumps of materials, comprising a first rotatable screw (2) provided with windings (3) disposed in a housing (5) with an inlet opening (6') and a discharge opening (11), sai...
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WO/1998/027339A1 |
The invention relates to a gear pump with internal rotor designed to deliver fluids, preferably oil for gear systems, pumps or internal combustion engines. On the side opposite the reniform suction and pressure elements used to feed in a...
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WO/1998/026181A2 |
The invention relates to a gerotor pump for aqueous viscous media which has preferably a two-piece pump housing consisting of pump chamber housing (3) and connection cover (29), and has, in the pump chamber housing, a pump chamber in the...
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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...
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WO/1998/021479A1 |
The invention relates to an internal geared wheel pump delivering a pumpable medium flow. According to the invention said device comprises at least one pump chamber, a housing (1), at least one pinion gear (8), at least one hollow wheel ...
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WO/1998/011351A1 |
Known designs of single-thread screw rotors in single-piece cast iron constructions having wrap angles of $m(g)720 degrees with balancing cavities on the face of the screw operate with no unbalance at average rotary frequencies of ($m(k)...
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WO/1998/010192A1 |
A vane cell pump has a pot-shaped housing cover (2) which receives a pump unit (3). The pot-shaped cover (2) is prolonged in the axial direction and contains a damper (14) to effectively dampen pressure oscillations. The housing cover (2...
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WO/1998/009119A1 |
An ice making apparatus adapted in a refrigerator includes a water supply tank (7) and a frame portion (8), where the water supply tank (7) is comprised of a tank main body (15) and a lid body (16), and the lid body (16) is provided with...
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WO/1998/005864A1 |
A hydraulic motor (10) having hydraulic pressure compensating annuli (52, 54, 56) for compensating for different hydraulic forces exerted on seal plates (22, 24) that seal both ends of a rotor (12) and a stator (20).
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WO/1998/004825A1 |
A fuel injection pump for internal combustion engines has an integrated feed pump with an outer ring (5) and an inner ring (10) coupled by teeth (12) to a driving shaft (15) of the fuel injection pump. The individual teeth extend with th...
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WO/1998/004832A1 |
A pump (10) is disclosed including an integral clutch and including a housing (26) divided into a clutch zone and a pump zone by a dividing wall (58). An input shaft (12) including a clutch spider (16) is rotatably mounted by a ball roll...
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WO/1997/049916A1 |
The invention relates to a fuel supply pump for a fuel injection pump for internal combustion engines, with a driven pair of meshing pinions (7, 9) rotating in a pump chamber (3) which feed the fuel from a suction chamber (13) connected ...
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WO/1997/049910A1 |
The invention relates to a fuel supply pump for a fuel injection pump for internal combustion engines, with a driven pair of meshing pinions (7, 9) rotating in a pump chamber (3) or other rotary conveying components which feed the fuel f...
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WO/1997/049915A1 |
The invention concerns a vane pump with a rotor carrying vanes, with two pressure plates (17) resting tightly against the rotor, one located at the discharge end of the pump and the other at the other end, and with an annular structure w...
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WO/1997/047884A2 |
An apparatus for providing pressurized liquid for operating a hydraulically operated device of an airplane comprises a pump for pumping liquid, a high speed flood cooled permanent magnetic motor for driving the pump, a drive connecting t...
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WO/1997/047886A1 |
An improved progressive cavity (pc) pump is provided. In a first aspect, the pc-pump comprises a rotor connected to a motor via a drive shaft that is isolated from the material flowing through the suction chamber of the pump, thereby pre...
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