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Patent Searching and Data


Matches 101 - 150 out of 1,146

Document Document Title
WO/2005/035980A1
The invention relates to a hydrostatic piston engine comprising a cylinder barrel (43) inside of which a first group of cylinder bores (53.1) and a second group of cylinder bores (53.2) are made. The cylinder bores of the first group (53...  
WO/2004/072486A1
A method and corresponding cylinder (1) for pressure amplification in cylinders are disclosed, characterised in that a second pressurising piston (16) with a small piston rod (17) is arranged within the cylinder (1), in other words, with...  
WO/2004/048786A1
The invention concern a pressure amplifier that includes a low pressure inlet for supplying a medium at low pressure, a low pressure piston with a first operational area and at lesat one high pressure piston with a second operational are...  
WO/2004/038220A1
A fluid supply unit (1), in particular a hydraulic supply unit is disclosed, comprising a pressure generator (2) for the fluid, in particular a pump for hydraulic fluids and a pressure outlet (7). The aim of the invention is to broaden t...  
WO2002053920A3
The invention relates to a pressure transformer (1). A movement of at least one piston (2) in at least one cylinder (3), as a result of a pressurisation, is transmitted to a transformer piston (4) in a pressure cylinder (5), by means of ...  
WO/2004/016942A1
The invention relates to a device for transmitting a displacement of an actuator to a setting element. Said device comprises two pistons (6, 7) that delimit two transmission chambers (10, 11) and a compensation chamber (22) with a housin...  
WO/2003/100385A1
Apparatus, and an accompanying method for use therein, that utilizes first (working) and second (stopping) servo-controlled hydraulic pistons (310, 313; 401, 413) wherein the stopping piston acts as a controlled mechanical stop for the w...  
WO2003027506B1
The invention concerns a pressure amplifying device for hydraulic circuit comprising means (1) (2) (3) for filling the circuit up to a predetermined pressure with a large flow rate, and beyond said pressure, for amplifying said pressure ...  
WO2003027506A3
The invention concerns a pressure amplifying device for hydraulic circuit comprising means (1) (2) (3) for filling the circuit up to a predetermined pressure with a large flow rate, and beyond said pressure, for amplifying said pressure ...  
WO2002052158A3
A hydraulic pressure transformer (10) for the conversion of an input hydraulic power (12) to an output hydraulic power (14), and particularly suitable for use in a work machine (17) having a hydraulic work unit (15) requiring a hydraulic...  
WO/2003/027506A2
The invention concerns a pressure amplifying device for hydraulic circuit comprising means (1) (2) (3) for filling the circuit up to a predetermined pressure with a large flow rate, and beyond said pressure, for amplifying said pressure ...  
WO/2003/008076A1
Improvements in product water throughput from a reverse osmosis (RO) membrane achieved by thinner feed spacers in the RO element (22), enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure oppos...  
WO/2003/002876A1
A booster allowing a pump to be reduced in size, eliminating the need of a selector valve, and emitting less noise, comprising two booster units (5, 5') and pressure pumps (11, 11') for feeding low pressure side fluid (A) to the booster ...  
WO2002029254A3
The invention relates to a valve for controlling fluids provided with a valve element (3), which can be axially displaced inside a valve body (5), with a hydraulic chamber (12), which functions as a hydraulic transmission, with a filling...  
WO/2002/086326A1
The present invention relates to a hydraulic pressurization system, in particular for application to pressurization devices operating in accordance with the high hydrostatic pressure principle. In particular, the present invention relate...  
WO/2002/084128A1
A pneumatic-hydraulic pressure amplifier (100) comprising a pneumatic cylinder-piston assembly (1, 2) operated by compressed air fed to said cylinder through a first inlet (10), a co-operated hydraulic cylinder-piston assembly (3, 4) the...  
WO/2002/053920A2
The invention relates to a pressure transformer (1). A movement of at least one piston (2) in at least one cylinder (3), as a result of a pressurisation, is transmitted to a transformer piston (4) in a pressure cylinder (5), by means of ...  
WO/2002/052158A2
A hydraulic pressure transformer (10) for the conversion of an input hydraulic power (12) to an output hydraulic power (14), and particularly suitable for use in a work machine (17) having a hydraulic work unit (15) requiring a hydraulic...  
WO/2002/040872A1
The present invention refers to power enlarging method in which power is enlarged when a fluid flows through a pipe or a passage, which has a larger area at inlet than at outlet. The pipe has a conical shape which has a cross section com...  
WO/2002/029254A2
The invention relates to a valve for controlling fluids provided with a valve element (3), which can be axially displaced inside a valve body (5), with a hydraulic chamber (12), which functions as a hydraulic transmission, with a filling...  
WO/2002/024441A1
The invention relates to a controller for a hydraulic press, comprising a pressing cylinder (1), a reservoir (2), a valve group (3), a pressure medium reservoir (7) and a hydraulic pump (6), connected together by means of a cylinder line...  
WO/2002/011970A1
The invention relates to a drive mechanism, comprising an electromotive drive unit (50) provided with an output element which can move in a straight line (54), a first piston cylinder unit (12) comprising a first active surface (18,19) a...  
WO/2001/094821A1
The invention relates to a valve for controlling liquids, comprising a piezoelectric actuator (2) disposed in an actuator bore (3). The valve is further provided with a hydraulic pressure intensifier (11) and a bellows (5). Said bellows ...  
WO/2001/071199A1
A hydraulic lock device capable of increasing the assured controllability and reliability thereof, reducing the size and increasing the output thereof, and reducing the size and pressure of a hydraulic pressure feeding source, comprising...  
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 ...  
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...  
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...  
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...  
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 ...  
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 ...  
WO2000065255A8
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 ...  
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...  
WO/2000/065255A1
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 ...  
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...  
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...  
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...  
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...  
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,...  
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...  
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 ...  
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 ...  
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 ...  
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...  
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...  
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...  
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.  
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...  
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.  
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...  
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...  

Matches 101 - 150 out of 1,146