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Patent Searching and Data


Matches 851 - 900 out of 3,875

Document Document Title
JPH09184501A
To control the raising and lowering of a work device with rapidity and without developing overshoot. This controller is equipped with a hydraulic cylinder 2 by which a plow connected to a travelling car body is drivingly lifted and lower...  
JPH09177703A
To control a pressing force by adjusting the opening of a valve by the deviation of the rotation angle through a process of applying pressing force to an object through a rod of a piston. A three-way valve 26 can take three states of for...  
JPH09175421A
To equalize a rotational frequency of lock-to-lock of either sides of a steering wheel in a hydraulic steering device containing one rod type cylinder. A fluid pump 11, a reservoir 13, and one rod type cylinder 25 are connected to an inl...  
JPH09170602A
To secure high speed control while low consumption of power is being maintained with process loading for a microprocessor lowered by separating a high speed operating part from a low speed operating part. Judging from controlling a valve...  
JP2623744B2  
JP2538434Y2  
JPH09151907A
To synchronously operate a plurality of cylinders without depending on an electric operation control system. In a device having one-side ends of a plurality of cylinders 3 connected to a rising and falling lid 2, it is necessary to simul...  
JPH09151904A
To enhance operativeness by detecting inclination quantity of a control lever for making the first and the second operations in the X, Y axial directions on a plane, making outputs in such a manner as being capable of carrying out both o...  
JPH09151905A
To enable any leakage from a regulating valve to the detected by outputting a diagnostic signal for increasing/decreasing an air pressure by means of a start signal, computing a quickness difference in variation between a reference signa...  
JPH09150240A
To provide a width changing device of a mold which executes the width change of the mold by enlarging the shifting stroke of a short side frame without stopping an operation so as to cast a cast slab of narrow width to wide width and to ...  
JPH09146606A
To prevent a peak from appearing in a control input at the time of step response and to stabilize control even when the peculiar vibration number of control system is fluctuated by constituting a hydraulic cylinder stroke servo system by...  
JPH09144703A
To easily grasp the trouble or the ambient environmental data of a valve by providing an auxiliary input terminal to which a signal from various sensors can be inputted to transmit a sensor signal to a host system through a field bus. Th...  
JPH09137801A
To provide a valve positioner suitable for the digital transmission signal of control by enabling a control valve to operate smoothly and also enabling a precise control for high speed responding with a small over shoot amount. A valve p...  
JP2612698B2  
JP2612699B2  
JPH09126119A
To easily remove bubbles, and furthermore make the replaceability of fluid excellent by providing check valves for the side of a pump head and a plunger which have a cylinder as a column shaped space in their inside parts, and for the si...  
JPH09119402A
To provide an oscillation prevention method for a hydraulic servo device preventing the oscillation at the low speed operation time. In a method for moving a piston position by connecting the oil supply system and oil discharge system of...  
JP2604079B2
PURPOSE: To smoothly drive a pneumatic cylinder and improve the stop accuracy of a piston at an intermediate position. CONSTITUTION: The position of the piston 22 of a rodless cylinder 21 is detected by a position detector 31. A control ...  
JPH09105140A
To make it possible to compact the ground surface or the like with a shovel of a hydraulic shovel by mounting a bucket whose bottom is flat on an arm of a hydraulic shovel and connecting a bucket cylinder connected to the arm to the buck...  
JP2598854B2
PURPOSE: To provide a reciprocating actuator which is preferable in explosion proof and capable of easily variable control of the moving stroke of a piston, the moving speed of the moving stroke or the like. CONSTITUTION: A piston 13 is ...  
JPH0995967A
To smoothly decrease the speed of an actuator so as to stop by providing an electric pressure reducing valve, a pressure detector, a deceleration computing part and an output correcting means between at least one of pilot operating devic...  
JPH0988905A
To obtain sufficient holding force (braking force) at the time when a command means indicates neutral in a constant pressure controlled liquid hydraulic driven device. A first cam 27 shifts a directional control valve 20 to neutral at th...  
JP2530168Y2  
JPH0979204A
To improve safety and reliability by avoiding any inconvenience that a pressurized fluid fed to a pressure chamber in a movable part is leaked to the outside due to a rupture of the wall surface of the pressure chamber, or a leakage out ...  
JPH0968201A
To enhance the controllability of an actuator when it is operated in combination with other actuators at crawling speeds, regardless of whether the load on the actuator is heavy or light. A directional control valve 3 controlling the amo...  
JPH09502501A
(57) It is a direct drive servo valve which contains the rotor's position sensor (46) of a summary motor as one parts. It is used for this rotor's position sensor (46) generating the electrical signal which displays angle of rotation of ...  
JPH0968202A
To facilitate adjustments for balancing weights by providing a hydraulic cylinder for controlling the angle by which a balance arm to which a plurality of tools can be removably attached is moved up and down, a relief valve capable of ad...  
JP2586977B2
PURPOSE: To obtain a fluid controller, which keeps manually steering capability and is made to give priority to the operation of the fluid controller over that of an electric hydraulic valve in particular when an electronic controller is...  
JP2587321B2  
JPH0960607A
To facilitate handling and reduce noise. An inner cylinder 1 and an outer cylinder 2 which are arranged coaxially are held between a head cover 4 and a rod cover 6, and a ring shaped piston 12 is slidably inserted between the inner cylin...  
JPH0960604A
To carry out the tuning control of the position and speed of a plurality of actuators by arranging a hydraulic distributing shaft on both ends of a plurality of eccentric shafts, arranging a liquid rotary joint on the outer peripheral pa...  
JP2585033B2  
JPH0949502A
To provide a valve positioner easy to regulate with a satisfactory controlling chacteristics. An operation amount (u) is calculated by a control calculation section 2 and converted to air pressure Pd by electricity/air converting means 3...  
JPH0942202A
To provide a positioner for an actuator position control in which the stop position of an actuator does not change by resulting from a mounting direction. In a positioner for an actuator position control composed of a pneumatic controlle...  
JPH0942213A
To execute control while setting a sensor valve to a neutral reference value at the start of operation by setting a preset standard value to the neutral reference value if a position is determined to be inappropriate. An operating transf...  
JP2579687B2  
JP2579682B2  
JPH0932804A
To provide a rotary actuator which can enlarge a guide passage for passing tubing or wiring without increasing the whole size. A cylindrical cylinder tube 18 is installed so that its axial line may be on one circumference. Both the ends ...  
JPH0932802A
To provide a follow-up operation control technique which can control pressure increase or decrease of a fluid device and markedly-improve follow-up accuracy for the target pattern of pressure and stroke. 2-port 2-position selector valves...  
JP2575908B2  
JP2576627B2  
JPH0925902A
To restrain the increase of the thickness of an air cylinder in the axial direction as far as possible by incorporating a permanent magnet between the piston of the air cylinder and the end cover. A end cover 2 made of a magnetic substan...  
JPH0925910A
To set the displacement stroke of a pressure receiving body at an arbitrary value. A piston 21 is movably provided inside the cylinder tube 20 of an air cylinder 13, and the inside of the cylinder tube 20 is partitioned by the piston 21 ...  
JPH0925904A
To quickly, easily and safely assemble a servo valve in a position centered under hydraulic pressure by centering the servo valve rotating a valve housing, pushing a preliminary assembling unit in the valve housing, and mutually pressing...  
JP2572399B2  
JP2572436B2  
JP2569907B2  
JP2567378B2  
JPH08338403A
PURPOSE: To enable applying of a continuous pressure and performing of pressure control accurate in good stability, by controlling a pressure of oil by controlling a hydraulic cylinder shaft with fine longitudinal motion. CONSTITUTION: A...  
JPH08326705A
PURPOSE: To improve reliability and EMI(electromagnetic interference)-resistance of an actuator by providing a controller which inputs the output of a position detector of a control piston and an actuator as a feedback input and sends a ...  

Matches 851 - 900 out of 3,875