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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...
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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...
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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 ...
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WO/2000/043675A1 |
The invention relates to a hydraulic unit, especially for a hydraulic, slip-controlled brake system of a motor vehicle. Said unit comprises an electric motor, a pump unit, an electronic control unit as well as an electric plug-and-socket...
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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...
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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,...
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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 (...
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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...
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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...
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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 ...
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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...
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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...
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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/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...
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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...
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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/1999/022141A2 |
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/1999/020904A1 |
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...
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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...
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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/1998/021478A1 |
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 ...
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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...
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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 ...
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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...
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WO/1998/000641A1 |
This disclosure relates to a vapor recovery unit of a fuel dispenser, and comprises a vapor pump, a variable speed electric motor coupled to drive the pump, and an electric control package connected to control the speed of the motor, the...
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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/1997/032130A1 |
A vapor recovery pump for pumping flammable vapors is disclosed. The pump includes a pump unit that defines a pump chamber into which the vapor is first drawn and then exhausted from. A motor contained in a motor housing provides the mot...
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WO/1997/020143A1 |
A gear pump (10) is disclosed having an integrated gear cavity (40) and bearing receptacle (54) that includes a fluid path for lubricating the bearings (24a, 24b). The preferred embodiment includes a helical gear pump (18, 20) having a m...
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WO/1997/012124A1 |
A hydraulic machine is disclosed, having a gearwheel (1) which has a first external toothing (8), a gear ring (3, 5), which has a first internal toothing (9) having at least one tooth more than and meshing with the first external toothin...
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WO/1997/012123A1 |
A hydraulic machine (1) is disclosed, having a gearwheel (4), which is arranged on a shaft (2) so that they rotate together and which has a first external toothing (5), a gear ring (7), which has a second external toothing (8) and a firs...
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WO/1997/010437A1 |
A braking mechanism, for controlling the release of energy in a rod string (34) for a down-well rotary pump (33), incorporates a rotary member (16) positioned in the energy loop from a prime mover to the top end of the rod string, requir...
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WO/1996/032590A1 |
The rotary pump may be classified as a volume pump and is used for the transportation of various fluids and generating necessary pressure. The rotary pump comprises the following main elements: pump housing (1), geared rotors (3) located...
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WO/1996/030410A1 |
Described is a method of producing solutions of cellulose in water-containing tertiary-amine-N-oxides by preparing a mixture containing cellulose, water and tertiary-amine-N-oxides and subsequently reducing the water content of the mixtu...
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WO/1996/022467A1 |
A rotating liquid ring compressor/turbine (RLRC/T), including a rotor having a core (6) and a plurality of radially extending vanes (8) mounted thereon, a tubular jacket (4) having outer and inner lateral portions, eccentrically, rotatio...
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WO/1996/014511A1 |
A rotary pump which is suitable for use as the pump for a vehicle power steering system has an integral motor. The pump includes a housing (16) through which a rotatable shaft (4) extends having at one end a pump rotor assembly (5). The ...
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WO/1996/014524A1 |
It comprises an integral block of a variator assembly which includes a hydropump cylinder (29), a hydromotor cylinder (39), the end-plates (30, 55) and a intermediary plate (38, 43) with ports for the fluid from the hydropump to the hydr...
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WO/1996/004159A1 |
In order to reduce the space occupied by a hydraulic braking system for motor vehicles with brake pressure modulation by means of adjustable vane pumps, all required vane pumps (10, 11, 12, 13) are driven through a common shaft by an ele...
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WO/1995/031644A1 |
A pump with twin cylindrical impellers (3, 4) of a simple and efficient construction capable of achieving an easy manufacture and a high pump efficiency. The pump includes a pair of identical circular shaped impellers (3, 4) respectively...
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WO/1995/030091A1 |
A motor/pump unit for pumping vapor in response to a flow of liquid, and particularly useful in systems (10) for dispensing fuel to a vehicle (PV) wherein vapor given off by the fuel is to be returned from the filling port (FP) of the ve...
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WO/1995/025891A1 |
Pump heads comprising at least two gear-pump chambers are disclosed. Each chamber comprises a housing which defines a corresponding pump cavity. Each cavity contains a driving gear and at least one driven gear and has a separate inlet an...
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WO/1995/024556A1 |
A first component of a fluid material is pressed out of a cartridge (C) which can be emplied by means of a press (P). The main component flows through a feeding line (8) to a discharge line (11), driving two rotors (31) mounted in the do...
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WO/1995/020099A1 |
A lubrication system comprises a pair of pumps (12, 14) supplied from a common inlet and being capable of being connected to a common outlet (24). When pressure in the oulet rises, control valve (28) can displace against spring (30) to p...
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WO/1994/018455A1 |
The proposal relates to a gear machine (pump or motor) having two outwardly engaging pairs of gears (21, 22) in staggered array which are secured by gearing (30) to a drive shaft (31) in which the number of teeth of the gearing (30) is a...
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WO/1994/008139A1 |
A hydraulic pump/motor as a hydraulic pump or hydraulic motor having a rotating type rotor characterized in that a rotor accommodating chamber having a circular cross section is formed in a housing, that a rotor is accommodated in said r...
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WO/1994/004824A1 |
A gerotor pump is made of extremely compact axial dimensions by using a shaft (30), which is neither fast with the pump body (10) nor journalled in the pump body (10). This is achieved by making the shaft fast with either or both of the ...
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WO/1993/018307A1 |
A variable capacity rotary screw compressor (10) having a rotor housing (12) including a bore (14, 16), an inlet (19), an outlet (21), a slide valve recess (25, 25A) and rotors (22, 24). Passive and active slide valves (34, 61) are mount...
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WO/1993/000513A1 |
The invention relates to a hydraulic pump (4) driven by an electric motor and distinguished by a compact and easily assembled design. The control device (3), electric motor (2), hydraulic pump section (4), tank (6), filter (5) and resona...
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WO/1992/020922A1 |
A fully variable output hydraulic pump (1) includes a main casing (2) having a fluid pumping chamber (31) extending therethrough, fluid input ports (36, 40) and fluid output ports (42, 44). The fluid pumping chamber is shaped to receive ...
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WO/1992/015773A1 |
A hydraulic pump in the form of an oil pump (12) for a vehicle engine has both its pinion (21) which is driven by the engine's crankshaft (3), and a ring-gear (22) which cooperates with the pinion (21), incorporated in an end-cover (11) ...
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