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WO/2001/050033A1 |
A pressure booster comprising a housing (11) with a low-pressure fluid inlet (14), a high-pressure fluid outlet (15), and an inlet (16) and an outlet (17) for compressed air. In the housing (11) there is provided a main piston (22) with ...
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WO/2001/046594A1 |
A fluid powered linkage (12) has at least three side plates (18) of substantially equal width joined by connectors (17) to form a polygon of variable cross sectional area. An upper plate and a lower plate enclose a variable volume within...
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WO/2001/042662A1 |
The present invention relates to a method of operating an apparatus (1) for generating high hydraulic pressure and having a low pressure piston (12) being displaceable in a low pressure cylinder (2). Said low pressure piston carries a hi...
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WO/2001/042690A1 |
The present invention relates to a seal assembly (1) for sealing the gap between two relatively moveable parts (26, 27) to prevent fluid leakage from a high pressure side to a low pressure side. Such a seal assembly generally comprises a...
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WO2000065255A9 |
A mechanism (1) for selectively securing a cover (14) to a flange (12) of a pressure vessel. A plurality of such devices can be employed, using a plurality of studs (10) that extend through matching openings in the flange (12) and cover ...
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WO/2001/014774A1 |
The invention relates to a valve for controlling liquids. The inventive valve is provided with a valve member (8) that can be actuated by means of a hydraulic transmission device (4) and is impinged upon by a pressure spring (10) in the ...
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WO/2000/068578A1 |
The invention relates to a device for converting pneumatic energy into hydraulic energy, comprising at least one pneumatic cylinder (1) for relaxation of a pressurized gas and at least one hydraulic cylinder (7) mounted in a hydraulic ci...
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WO/2000/055508A1 |
A control system (10) for a hydraulic transformer (12) comprises a hydraulic transformer (12) for providing hydraulic pressure to a fluid actuator (22), a hydraulic system (14) for providing hydraulic pressure to the hydraulic transforme...
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WO/2000/050777A1 |
A hydraulic locking device, wherein a booster (7) having a discharge part (6) communicating with an outer peripheral side hydraulic chamber (5) is installed in a case member (2), an input port (16) feeding an input hydraulic pressure fro...
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WO/2000/037800A1 |
The invention relates to a device for converting energy being stored in compressed air into mechanical work. Said device comprises the following structural parts: at least one compressed-air reservoir (1) for storing compressed air; seve...
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WO/2000/034664A1 |
The invention relates to a releasable check valve for use at very high system pressures. The aim of the invention is to provide a check valve in which the poppet piston (70) runs relatively smoothly and in which the seals (74, 86, 87) ar...
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WO/2000/023716A1 |
The invention relates to a fluid-actuated working device comprising a housing (2) and a piston rod (6) which can be displaced with regard to the housing (2) by fluid force. At least one control valve (38, 38') which can be actuated accor...
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WO/1999/032806A1 |
The invention relates to an automatic transmission for a motor vehicle, especially a continuously variable transmission. The transmission has a variator, a primary disk set (12) and a secondary disk set (10) having a pushing linked band,...
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WO/1999/017028A1 |
A pressure exchanger for transferring pressure energy from one fluid flow to a second where two end covers (13, 14), a rotor (11) and a rotor liner (12) are mounted together via a centre bolt (10) in a pressure housing (1) in order to re...
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WO/1998/045109A1 |
The present invention relates to a hydraulic system for a press comprising a press ram (2), at least one main press cylinder (1) with a primary side (21) for producing press thrust and a device for returning the press ram. The hydraulic ...
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WO/1998/017492A1 |
The invention concerns a motor vehicle drive system comprising the following components: a compressed air chamber (100); a hydropneumatic converter (101) for converting pneumatic work into hydraulic work; a conformer (102) with an input ...
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WO/1997/021483A1 |
A process is disclosed for desalinating water, in particular sea water, by reverse osmosis. Salt water (10) is fed under pressure into a membrane module (5) to produce desalinated water which has passed through the membrane system of the...
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WO/1997/017546A1 |
In order to maintain high efficiency close to isothermy despite high frequencies in a pneumo-hydraulic converter with reciprocating pistons, pipe cluster-heat exchange pipes (38) are provided in the gas working chambers of the converter ...
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WO/1996/041692A1 |
A hydraulic pressure boosting unit (11) is used in particular in a press operating according to the high inner pressure extrusion process. The hydraulic pressure boosting unit has a docking cylinder (10) with a docking piston that slides...
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WO/1996/030619A1 |
Pressure converter for mounting above the drill bit at the lower end of a drill pipe for generating a higher fluid pressure in a portion of a drilling fluid flow, comprising a piston (6) being moveable in a cylinder (1, 2, 3). The piston...
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WO/1996/030618A1 |
Pressure converter for mounting above the drill bit on a drill pipe for generating a higher fluid pressure in a portion of a drilling fluid flow, comprising a piston (6) being moveable in a cylinder (1, 2, 3). The piston has a large pist...
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WO/1996/018825A1 |
A hydro-pneumatic pressure booster is proposed in which the reservoir chamber (24) is limited by an elastic partition wall (26, 126) instead of a sliding piston.
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WO/1996/018036A1 |
A device (10) for elevating a pressure acting on a liquid including a liquid pressure elevating mechanism (11) for receiving liquid under a first positive pressure and at a selected volume of liquid per unit of time flow rate from a liqu...
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WO/1996/001953A1 |
A hydraulic system which automatically connects a pressure pump to a hydraulic ram and disconnects it therefrom, and which at the same time keeps the pressure booster filled with oil.
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WO/1995/033928A1 |
A pressure intensifier for pressurization of a medium, comprising a low-pressure cylinder (1), in which a low-pressure piston (2) is axially displaceable, two high-pressure chamber (3, 4) which are each arranged coaxially with and on sep...
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WO/1995/013478A1 |
A two-stage pressure cylinder having a work cylinder (17, 100) with a work piston (18, 108), and piston rod (20, 110) for contact with a work piece, in which the work piston is movable, an oil cylinder (56, 116) to contain hydraulic flui...
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WO/1994/028303A1 |
An ultrahigh pressure generating device wherein plunger chambers (4a, 4b, 4c) are formed on the rod side of single rod type hydraulic cylinders (7a, 7b, 7c), wherein first, second and standby boosters (1, 2, 3) for pressurizing under an ...
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WO/1994/027794A1 |
A small and inexpensive ultrahigh pressure control device wherein first and second boosters (1, 2) for pressurizing under an ultrahigh pressure the water taken into plunger chambers (3a, 3b) by virtue of the reciprocating movements of hy...
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WO/1994/001309A1 |
The subject invention relates to a fluid pressure intensifier (32) for increasing the pressure of an incompressible fluid and comprises a fluid reservoir (112) supplying fluid to a cylinder housing (72). The housing (72) includes first i...
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WO/1993/021444A1 |
A fluid intensifier (P) comprises a two stage piston (1) within a sleeve (2). Piston (1) provides, by pressure multiplication, a pressure increase to buffer fluid within the intensifier (P). Sleeve (2) is located within an outer sleeve (...
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WO/1993/016288A1 |
A new kind of pressure transformer (9) has a flow channel (11) and closure means (12) for bringing a gaseous, flowing medium from an initial pressure up to a higher pressure level with only a small supply of external energy.
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WO/1993/005300A1 |
A modular digital actuator (10) is formed by interconnecting a plurality of modules (12, 14). Each of the modules (12, 14) includes a housing (16) having a pair of different sized axially extending cylinder sections (20, 22) in which is ...
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WO/1992/001155A1 |
Power booster comprising a hydraulic jack with thrust-reversing device, loacted between a driving force and a resistive element. The power booster consists of cylinders (1) mounted in pairs by means of a yoke (9) rotating on a shaft (10)...
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WO/1991/006781A1 |
An arrangement in pressure exchangers for transfer of pressure energy from one fluid flow to another, comprising a housing with an inlet and an outlet duct (9, 11, and 10, 12 resp.) for each fluid flow, a rotor (15) which is designed to ...
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WO/1991/004169A1 |
A control device for hydraulic working cylinders with a hydraulic medium pump (1) driven by a motor (2) which can be caused to communicate with a chamber of at least one lifting cylinder (11) and at least one lock cylinder (14) of the lo...
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WO/1989/003334A1 |
To prevent energy losses, in particular during cylic energy-consuming operating processes, a dual-lever roulette mechanism (12) is incorporated between the hydraulic accumulator (1) and the consumer to ensure continuous equilibrium betwe...
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WO/1988/005133A1 |
A pressure exchanger for transfer of pressure energy from a liquid flow of one liquid system to a liquid flow of another liquid system includes a housing (1) with inlet and outlet ducts forming pairs of ducts for each liquid flow. A cyli...
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WO/1987/005973A1 |
A method of and means for anti-contamination flow control in liquids in a system using a motor unit (1) adapted to be driven by a pressure liquid having its drive coupled to drive a pump unit (6) adapted to pump liquid under pressure to ...
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WO/1987/001161A1 |
A fluid-driven power plant (10) includes a motor (20) and a combustion energy input device combined in a closed, pressurized system. A balance cylinder (26) provides variable low pressure fluid storage within the system and also operates...
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WO/1983/004288A1 |
A hydropneumatic pressure converter has a first pneumatic part and a second hydraulic part. The essence of the invention lies in that the first pneumatic portion is formed by a flexible cylinder provided with a front plate having a cylin...
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WO/1983/000540A1 |
Pneumatically controlled pressure transducer intended to actuate hydraulic working members and provided with a double motor cylinder; on one side thereof there is a pneumatically actuated cylinder, and on the other side a hydraulically a...
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WO/1982/004290A1 |
An internal combustion driven fluid pumping apparatus for accumulating fluid pressure to be applied against a load includes a two-stroke combustion cylinder (15) having a piston (18) drivingly connected to a piston (21) of a linearly dis...
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WO/1982/001222A1 |
A device comprising reservoirs (1, 2) for a base and a hardener respectively, feeding (3, 4) and dosing pumps (5, 6), a mixing chamber (7) and an executing member (9). The stability of the pressure of feeding the components is ensured by...
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WO/1982/000501A1 |
A hydro-pneumatic pumping installation comprises two double action hydro-pneumatic boosters (2, 3). Each pneumatic cylinder (4, 14) of the boosters (2, 3) contains a piston (7, 17) dividing it into two pneumatic chambers (10, 11, 20, 21)...
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WO/1982/000502A1 |
A hydro-pneumatic pumping installation comprises two double action hydro-pneumatic boosters (2, 3) containing pistons (5, 13) which form in the pneumatic cylinders pneumatic chambers (6, 7, 14, 15) of variable volume connected to the out...
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WO/1981/000547A1 |
A hydraulic system for trimming a marine outboard drive (49), and wherein a single actuator (11) for moving the propulsion unit (49) is used for both trim and tilt. The actuator (11) is connected to a hydraulic pump (3). An amplifier (5)...
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JP7443871B2 |
A pressure booster (10) includes a pressure boosting unit (12) and a bypass unit (88). The pressure boosting unit includes an input port (40) connected to the side of a fluid supply source and an output port (44) connected to the side of...
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JP7436426B2 |
To provide a booster which can suppress a stop of a selector valve in a neutral position by accelerating a motion speed of a spool.A booster comprises an opening/closing valve 25a which takes an open position P1 for making a first boosti...
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JP7314463B2 |
A pressure booster (10) in which drive cylinders (14, 16) are arranged at both sides of a boost cylinder (12), and which is equipped with: a pair of pilot valves (72, 74) equipped with knock pins (90) that come into contact with pistons ...
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JP7307644B2 |
To provide a thrust expansion device that facilitates the replacement of an input side actuator.On an input side of a thrust expansion device 1, a through-hole of a hydraulic chamber 8 to be fitted with rod diameters of various actuators...
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