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JP2005255156A |
To provide an improved hydraulic brake system and a hydraulic pressure increasing device 10 to be used therein.The hydraulic pressure increasing device comprises a cylindrical chamber 42. The cylindrical chamber has an inlet end 44 and a...
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JP3697880B2 |
To prevent leakage of brake fluid from a rotary type pump when a pressure at the suction port of the rotary type pump is increased to a high value. A casing 50 incorporates outer and inner rotors 51 and 52 and has a central hole 50a in w...
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JP2005240818A |
To provide a speed control device for a hydraulic actuator improving efficiency of the actuator by subdividing pressure setting of the actuator and adjusting rotation speed in multi stages, and improving durability by breaking up overloa...
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JP2005525517A |
A hydraulic system, esp for vehicles, consists of a master cylinder (92), a slave cylinder (93) and a pressure medium line (99,100) connected to it. The system has at least one plug type connector (2) and a socket contact (3), and the co...
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JP2005524802A |
A hydraulically actuated artificial muscle for use with orthetic devices, prosthetic devices or as an actuator for other applications in medical or robotic devices. Working fluid is pumped between two expandable fluid-containing cells, w...
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JP2005201285A |
To provide a hydraulic actuation device capable of moving and positioning a hydraulic actuation tool to effectively perform operation even in a narrow space.The hydraulic actuation device is equipped with a first coupling section 18 at t...
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JP3668543B2 |
To perform non-smooth operation of a hydraulic actuator due to abnormal reduction of a circuit pressure during movement of an object when an object having high inertia is moved from a stop state by the hydraulic actuator. A hydraulic cir...
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JP2005054862A |
To freely adjust output of a driving mechanism by adjusting discharge quantity of pressure fluid to be supplied to the driving mechanism, and to miniaturize an actuator by integrally providing a pump mechanism with the driving mechanism....
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JP2004340357A |
To facilitate simpler construction of a device to be smaller and lighter for actuating an operating rod with slight force and improving a degree of freedom in pull-around and installation and workability.The actuator comprises a first pi...
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JP2004334149A |
To provide a tripod which can be loosened by a single action and locked at one place.A locking lever in the center of the tripod serves as a lock for expansion/contraction and a hydraulic pump for the tripod. Flexible thin pressure resis...
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JP2004261867A |
To provide a rivet caulking device using assistance of gas pressure/fluid pressure to caulk a blind rivet.The rivet caulking device has a pulling-in head which is driven by the fluid pressure for engaging with the mandrel of the rivet an...
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JP2004263806A |
To obtain a hydraulic apparatus free from restrictions on attitude control.The hydraulic apparatus comprises a hydraulic pump 1 driven by an electric motor 6 capable of bidirectionally rotating, and both ports of a hydraulic cylinder and...
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JP2004510917A |
A valve for controlling fluids is provided, having a valve member (3) axially movable in a valve body (5), having a hydraulic chamber (12) acting as a hydraulic booster, and having a filling device (15) to compensate for leakage losses, ...
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JP3516452B2 |
PCT No. PCT/NO94/00180 Sec. 371 Date May 14, 1996 Sec. 102(e) Date May 14, 1996 PCT Filed Nov. 10, 1994 PCT Pub. No. WO95/14174 PCT Pub. Date May 26, 1995A double acting hydraulic system including a master cylinder and a slave cylinder. ...
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JP2004068833A |
To make the pulsation of the secondary pressure generated by a hydraulic booster (a booster) to the minimum.The low pulsation hydraulic booster is provided with a plurality of plunger cylinders 2 having plungers 2a, and at the same time,...
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JP3457741B2 |
PURPOSE: To provide a method for simple easy air bleeding when hydraulic oil is filled in a circuit in a hydraulic power unit equipped with a manual pump. CONSTITUTION: A hydraulic power unit has a switching valve 13 in the vicinity of a...
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JP2003525395A |
A hydraulic pressure transformer for the conversion of an input hydraulic power to an output hydraulic power has a cam block. The cam block has a cam opening defining a pump section and a motor section. The pump section includes at least...
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JP2003161303A |
To make an actuator lightweight and silent.There are provided a cylinder 1, a piston 2 arranged and driven to reciprocate in the cylinder 1 and actuators 31 and 32 connected to both side chambers 11 and 12 of the piston 2 in the cylinder...
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JP3408233B2 |
To provide a pressing mechanism which reduces nonuniformity on the occasion of pressing an object, prevents pollution due to a hydraulic fluid and also enables attainment of miniaturization. The pressing mechanism is equipped with a hydr...
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JP3362879B2 |
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JP3341151B2 |
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JP2002531754A |
A reversibly actuatable fluid hydraulic pump is described for use in a hydraulically driven elevator. The pump comprises a cylinder and a piston linearly actuatable within the cylinder by a ball screw race disposed over a spindle and con...
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JP2002257102A |
To drive machines which perform a cyclic motion with high acceleration, saving energy by electrical power control and utilizing greater output for the working processes of machines.The invention proposes a novel drive with electrical pow...
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JP3316675B2 |
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JP2002520545A |
An actuator (7) comprises a housing (8) which contains a screw mechanism (9) and a motor (10) which is drivably connected to the screw mechanism (9), said screw mechanism (9) providing a linear movement in response to a rotational moveme...
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JP3295836B2 |
To provide a hydraulic remote control type micro-manipulator whose micro tool front end will not move even if a temperature change occurs. A bimetal type compensator 32 is fitted between a piston 36 and a screwing member 31. The bimetal ...
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JP2002517691A |
The invention concerns a device comprising a shift cylinder with a cylinder body (17) bearing a first sleeve (54) for guiding a second sleeve (42) enclosing an axially mobile piston (21) with an intervening piston seal between the second...
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JP3280964B2 |
PCT No. PCT/GB91/01210 Sec. 371 Date Nov. 1, 1994 Sec. 102(e) Date Nov. 1, 1994 PCT Filed Jul. 19, 1991 PCT Pub. No. WO92/02107 PCT Pub. Date Feb. 6, 1992An actuator having a linear current force characteristic comprises a moving coil tr...
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JP2002089587A |
To provide an improved switching arrangement for a master cylinder assembly.The master cylinder assembly 10 is for controlling an automotive clutch 18 including switches for controlling functions such as enabling a stator motor, disablin...
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JP2002089503A |
To enable a precision speed control and position control of an operation member by driving the operation member such as a rod or the like with a small size actuator.A drive piston 13 is moved in a cylinder tube 4a in a linear direction b...
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JP2002506505A |
Apparatus is disclosed for controlling the operational states of a motor vehicle comprising a maneuvering console including a maneuvering lever, a pivot hinge for the maneuvering lever so that the maneuvering lever can be actuated into a...
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JP3238140B2 |
To provide a cam synchronizing mechanism capable of exhausting generated bubbles, and in which a hydraulic fluid is easily replenished. A hydraulic fluid is supplied, and discharged between a ram hydraulic cylinder 4 reciprocated by a ca...
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JP2001248601A |
To provide an actuator which can be composed to be simple and compact, and which will not cause problems of noise and cleanness, and a drive system using that.This actuator 2 for driving an actuation part is provided with a cylinder 12 c...
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JP3191938B2 |
PCT No. PCT/NO91/00142 Sec. 371 Date May 13, 1993 Sec. 102(e) Date May 13, 1993 PCT Filed Nov. 14, 1991 PCT Pub. No. WO92/08914 PCT Pub. Date May 29, 1992.A gear shift device for gear boxes for vehicles, comprising at least one pair of m...
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JP2001016827A |
To extend the service life of electrical component, including an electric motor with a simple structure, by cooling electrical components provided on a construction machine with hydraulic oil that operates a hydraulic actuator.Excavating...
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JP2001012411A |
To cope with the pressure of gas in a gas chamber by partially fixing one of pistons to the gas chamber, and the other piston to a hydraulic chamber, and limiting the maximum pressure in a hydraulic chamber as a function of the gas press...
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JP2001012402A |
To provide a hydraulic pressure control device which can prevent excessive pressure reduction under the state of pressure reduction, and precisely control the hydraulic pressure value to be a target value.A first positive displacement pu...
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JP2000356202A |
To generate large thrust by a servomotor of low torque by comprising a control cylinder connected to a driving cylinder, and the servomotor for driving the control cylinder.A driving cylinder 1 and a control cylinder 3 are hydraulically ...
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JP2000314402A |
To provide an enlarged operating amount of displacement of a piezoelectric element by a hydraulic pressure enlarging actuator. A pressurized chamber 5 and a pressure receiving chamber 9, whose transverse internal cross-section is smaller...
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JP2000161306A |
To perform manual operation in emergency easily and safely even in an operation cylinder provided with two operation chambers with different volumes in the piston side and the piston rod side.The double-acting hydraulic operation cylinde...
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JP2000154802A |
To obtain an operation amount enlarged the displacement amount of a piezoelectric element by a real hydraulic enlarge actuator.A first pressure camber 5 is communicated with a second pressure chamber 9 with a small lateral inner sectiona...
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JP2000501686A |
A positioning actuator with three axes includes a base having a movable supporting member and a device for moving the member up and down, and a shaft connecting the movable head of the actuator to the base. The connecting shaft forms a s...
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JPH11268688A |
To make a tilt cylinder device more compact by providing a delay mechanism inside a hollow piston rod. An external oil passage 61 for communicating an oil chamber S6 with an oil chamber S7 is provided outside a cylinder 51. A pump 72 and...
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JPH11255104A |
To match a device to various purposes without slightly changing a valve device or by slightly changing it by determining the spring force so that the device has a prescribed operating force demand. An operating member 12 is held in the n...
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JPH11201103A |
To perform remote manual operation of a positioning device for optics by hydraulic operation instead of electric operation. Two cylinders 6 are intercoupled through an oil-contained tube 1, and a screw to move a piston 3 to one and a pus...
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JPH11166503A |
To provide a cylinder drive mechanism in which it is not necessary to feed under pressure fluid such as oil to a cylinder from the ground. A cylinder drive mechanism comprises an input cylinder 4, an output cylinder 5 and a fluid pressur...
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JPH1199635A |
To do a greater number of operations simply without an additional troublesome pressure step controller by installing an actuation mechanism in which a pressure converter is equipped with an actuation mechanism surface which is loaded wit...
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JPH1190877A |
To prevent the occurrence of bubbles by reducing the pressure difference between the right and left chambers divided by one and the other pistons of one and the other cylinders. A pipe 9 communicates one chamber 42 faced to the other cha...
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JPH1182404A |
To provide a seesaw type actuator suitable for driving a multicylinder such as telescopic telescoping pole which is rather low in weight, low in cost, and can be telescoped in horizontal and slant directions as well as in vertical direct...
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JPH1137105A |
To completely prevent the intrusion of foreign matters from the outside even under an adverse condition by composing a cylinder driving system of an input side part, an output side part and pipelines connecting the input side part and ou...
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