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Patent Searching and Data


Matches 251 - 300 out of 924

Document Document Title
WO/1998/046899A1
The hydraulic control system disclosed herein employs a pair of combination poppet/spool valves (17, 19) to control the operation of a hydraulic cylinder (121) driven from a bidirectional pump (127). Flow introduced through the source po...  
WO/1998/009084A1
An electrically actuated hydraulic power cylinder (10, 100, 200) for use in a vehicle braking system. The power cylinder includes an electric motor (12, 102, 202), a rotary-to-linear actuator for converting rotary motion of the electric ...  
WO/1997/032764A1
An improved compensation piston arrangement (80, 138, 201) for use with a dual circuit master cylinder (10, 120, 200, 300, 320, 340) having a single service piston (26, 122, 206) for simultaneously pressurizing a first fluid chamber (60)...  
WO/1997/032765A1
An improved force transfer arrangement for use in a dual circuit master cylinder (10, 200, 300) having a pair of nested concentric pistons (28, 30, 208, 210, 308, 310) for pressurizing a pair of respective fluid chambers (92, 96, 214, 21...  
WO/1997/021929A1
A positioning actuator (40) with three axes (X, Y, Z) including at least one power axis is disclosed. The actuator includes a base (41) comprising a movable supporting member and a device (44) for moving said member up and down; and a sh...  
WO/1997/007275A1
A needlebar positioning system for a tufting machine is disclosed which comprises a first hydraulic cylinder (44) driven directly or indirectly from the tufting machine main drive shaft (30), by the cylinder being connectable to a needle...  
WO/1996/037392A1
A master cylinder having, in addition to a main pressurizing chamber (72), a fast-fill pressurizing chamber (74) to quickly force, while pedal effort is minimal, brake pads or shoes from initially retracted positions to positions where t...  
WO1996022466A3  
WO/1996/023996A1
A pressure reduction valve for reducing the pressure in double-acting, closed hydraulic systems when they are not attended. The valve comprises a valve housing (1) with a boring (6), whose ends communicate with the respective circuits, a...  
WO/1996/022466A2
A hydraulic actuator (10) which controls the operation of a cylinder valve having a valve seat (11), and a valve element (12) which is linearly reciprocable between open and closed positions with respect to valve seat (11), a valve seal ...  
WO/1996/012108A1
Hydraulic operating device, in particular for the operation of a selector fork (40) of a gearbox, and gearbox provided with such an operating device. The device comprises a double-acting cylinder (1), which is coupled to the selector for...  
WO/1995/028588A1
A precompression valve for a hydraulic clutch actuating device in a motor vehicle has a first union (3) for a master cylinder and a second union (4) for a slave cylinder, in which, in the event of a pressure drop from the first (3) to th...  
WO/1995/028589A1
To fill a vehicle's hydraulic clutch actuator with hydraulic fluid, the actuator's pressure valve has a holding device that keeps a closure body (21) at a distance from its closure seat (19). To ensure repeated use of the holding device,...  
WO/1995/014174A1
A device for double-acting hydraulic systems with a slave cylinder (1) and a master cylinder (72) whose piston (76) can be moved to a position, wherein fluid can flow both ways between a master cylinder space (73, 74) and a reservoir (92...  
WO/1995/011139A1
A vehicle convertible top (16) is moved by hydraulic cylinders (29) between extreme raised and lowered positions. The cylinder ends are connected (26, 28) to ports (60, 60') in a reversible hydraulic pump (36) in one end of an elongated ...  
WO/1995/008715A1
The present invention relates to a hydraulic supply device for a double acting cylinder (1) comprising an electrohydraulic generator (5) supplying oil under pressure to the cylinder (1) through a line (15) and a distributor unit (12), ch...  
WO/1993/014963A1
A hydraulic master cylinder and reservoir assembly having a master cylinder body (11) with a fluid reservoir (12), and a master cylinder bore (18) with a piston assembly (35) sealingly reciprocal within the bore. The fluid reservoir (12)...  
WO/1992/008914A1
A gear shift device for gearboxes for vehicles, comprising at least one pair of mutually connected, double-acting hydraulic cylinders (1, 2), where the pair consists of a master cylinder (1) and a slave cylinder (21). The master cylinder...  
WO/1992/002732A1
The invention concerns a master cylinder for hydraulic systems, in particular brake systems. The aim of the invention is to reduce the return stroke of the piston (3) conditioned by a compensation aperture (7) in the cylinder wall (1). T...  
WO/1992/002107A1
An actuator having a linear current force characteristic comprises a moving coil transducer and a hydraulic lever. The moving coil (9) is capable of producing only a relatively low force but with a relatively large displacement. The coil...  
WO/1992/000460A1
Described is a device for driving a tool in the longitudinal direction to carry out an oscillatory back-and-forth motion, the tool working with high efficiency at high oscillation frequencies and being usable as an easy-to-handle hand to...  
WO/1991/011621A1
The master cylinder comprises a body (10) formed with a bore (13), a piston (19) slidable in the bore to discharge hydraulic working fluid from the bore and an annular reservoir (17) for communication with the bore (13) and which is conc...  
WO/1990/000994A1
Master and slave cylinders (10, 45) are provided interconnected by a conduit (46). The master cylinder (10) includes a piston (19) movable in a cylinder (11) which defines a pressure chamber (82) arranged to be placed under pressure by t...  
WO/1989/011040A1
The actuator comprises a clutch pedal lever (12) which is pivotally connected to a support (17). The pedal is integral with a cylinder (18) having a piston (20) therein which is connected to a hollow pushrod (28). The pushrod is also piv...  
WO/1989/002813A1
In a device for fastening perforating rules or blades on rolls (perforating cylinders) in printing machines, the perforating cylinder (26) has at least one receiver groove (25) for a perforating rule (11) in which a clamping strip (10) p...  
WO/1988/009734A1
The hydraulic actuator comprises a hydraulic master cylinder (12) having an outlet (12e) for connection to a slave cylinder (14) through a working fluid conduit (15) and an inlet port (12d) for connection to the outlet port (23) of a res...  
WO/1988/008801A1
The assembly comprises a piston (18) made of plastics material and which is slidable axially in a cylinder (16). The piston has an axially extending socket (18f) in an end thereof made of metallic material which locates a piston rod (21).  
WO/1988/008800A1
A master cylinder (12) includes a piston (30) slidable within a pressure chamber (28b) and a valve assembly (36) for permitting an inhibiting communication between the pressure chamber (28b) and a reservoir. The valve assembly (36) inclu...  
WO/1988/002322A1
The device comprises a manipulator (148) of which the body (149) houses position-emitting deformable pockets (155-157) connected each by means of a hydraulic circuit corresponding to a deformable pocket-type position receiver (130-132, 1...  
WO/1987/007927A1
Fluid transmission with primary working cylinders (1, 2) and secondary working cylinders (3, 4) in which are arranged working pistons (6, 7, 8, 9) that effect translatory movements. The working cylinders are connected in pairs via pressu...  
WO/1987/003850A1
A hydraulic master cylinder (10) formed by telescopically fastening together a pair of cylinder housings (30, 34) to form a cylinder. A piston (64) in the cylinder is operative to transfer hydraulic fluid to a slave cylinder (15) connect...  
WO/1985/000148A1
Hydraulic power transmission device (1) adapted to form part of a control system at which the pressure of a hydraulic fluid (6) is controlled at one or more points of the control system by fluid pressure actuated members and in which cha...  
WO/1985/000203A1
A valve system for gas or liquid, comprising a hydraulic power transmission (19) where the pressure of hydraulic fluid is controlled by fluid pressure actuated members (15) and the changes of the fluid pressure actuate operative members ...  
WO/1984/002302A1
Movable link device with a plurality of freedom degrees between a carrier element (manipulator arm or the like) and a carried element (tool, and particularly gripping tool). The device comprises a support frame (1) adapted to be secured ...  
WO/1983/003643A1
a) Hydraulic servo motor comprising a jack (1, 14) intended to be connected by its rod (31, 32, 151) to a moving member to be displaced and accurately positioned, said jack being completely filled with liquid; b) servo motor characterize...  
WO/1981/000599A1
A hydraulic circuit (32), for example, remotely controls a work element (14) and contains first apparatus (34), such as a master cylinder (42), which passes a fluid signal through a first or second fluid pathway (38, 40) in response to a...  
JP6728145B2  
JP2020051556A
To prevent belt holding pressure from decreasing in a process of suppressing hydraulic vibration.A hydraulic control device according to the present invention is a hydraulic control device that suppresses hydraulic vibration generated in...  
JP2020051557A
To detect hydraulic variation in its early stage.A hydraulic control device according to the present invention is configured to control hydraulic pressure of a hydraulic circuit to target hydraulic pressure, and comprises: a hydraulic de...  
JPWO2018173845A1
The fluid apparatus which can improve the operation nature of the member turning in a container is provided. It is provided in container 2 which can store fluid, and the container 2, and is with 1st fluid in-and-out way 24 where the 1st ...  
JP6511010B2  
JP2019510938A
[Subject] Provide an oil pressure work occupancy device. [Means for Solution] A ball elbow mechanism which is an oil pressure work occupancy device and is connected with an oil pressure formation mechanism and an output element at an oil...  
JP6448764B2  
JP2018173131A
To provide a position control device, etc. capable of improving accuracy of a minute displacement of a piston position of a hydraulic cylinder.A position control device comprises a hydraulic oil supply part 1 for supplying hydraulic oil ...  
JP6261715B2  
JP2017203504A
To provide an actuator device capable of locating with high accuracy.An actuator device 10 comprises: a piston 21 accommodated in an interior space to form a pair of pressure chambers 24 and 25 together with a cylinder 20 and move relati...  
JP2017531769A
It is the industrial system provided with the amount fluid operation machinery of synthetic rectification type variable discharge. An injection molding system, a waterjet cutting machine, or other industrial systems, It has the amount fl...  
JP2017529496A
A fluid pressure type actuator is provided with the following. A fluid pressure type driving cylinder which has especially a drive piston, A fluid pressure type output cylinder hydrodynamically combined with the driving cylinder concerne...  
JP6178716B2  
JP6000444B2  

Matches 251 - 300 out of 924