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JPH0463242B2 |
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JPH0442561Y2 |
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JPH04282002A |
PURPOSE: To improve the responsiveness and the stability by providing a plurality of through holes in a center wall partitioning to form the first and the second pressure chambers in a contracting mechanism to supply the driving pressure...
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JPH04109201U |
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JPH0440005Y2 |
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JPH0440007Y2 |
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JPH0440001Y2 |
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JPH0440006Y2 |
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JPH0440002Y2 |
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JPH04254001A |
PURPOSE: To provide a variable stroke fluid pressure cylinder apparatus which is driven at high speed under pressure equal to or more than the pressure of a fluid pressure source without increase in the pressure of the fluid pressure sou...
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JPH04251306A |
PURPOSE:To highly precisely control the position of a hydraulic cylinder with a simple device. CONSTITUTION:This method for controlling the position of a hydraulic cylinder 1 which controls the stroke of the cylinder 1 to an aimed value ...
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JPH0497101U |
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JPH0450442B2 |
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JPH0433362Y2 |
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JPH0449367B2 |
A hydraulic control arrangement for actuating a lifting mechanism of an agricultural machine has a hydraulic motor arranged to lift and lower at least one member of a lifting mechanism, a hydraulic pressure medium source, a directional c...
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JPH0433445Y2 |
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JPH0447162B2 |
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JPH0447165B2 |
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JPH0447161B2 |
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JPH0447163B2 |
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JPH0447164B2 |
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JPH0445687B2 |
1. Double-acting working cylinder actuated by a pressure medium and having the following features : a) a shaft (30) is provided which is rotatably mounted in the cylinder housing (15, 23, 38) and is in operative connection via a spindle ...
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JPH0445711B2 |
The valve disclosed herein functions, in one sense, as a flow matching device and, in another sense, as a reciprocative check valve. By employing the valve, a hydraulic system may be implemented in which filling and emptying of a variabl...
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JPH04203602A |
PURPOSE: To prevent breakage and damage of a fluid actuator by comparing a pressure detection signal with a command signal at the time of position control while comparing a position detection signal therewith at the time of pressure cont...
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JPH04203601A |
PURPOSE: To stabilize opening-closing control of a valve by connecting a compensation circuit having specified transmission functions in parallel between the input and output sides of a controller, thereby preventing the opening-closing ...
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JPH04201192A |
PURPOSE: To enable detection of a tip end position and a deformation state of an actuator by providing detection parts for detecting an elongation change amount of an outer edge of a cylindrical body in the axial direction at an outer wa...
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JPH0430407Y2 |
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JPH0477080U |
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JPH0477001U |
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JPH04185902A |
PURPOSE: To make manual pressure setting by providing a discharge port through a flow control means between a nozzle back-pressure chamber of a pilot relay and an automatic/manual selector means to eliminate a pressure reducing valve. CO...
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JPH04181002A |
PURPOSE: To prevent the abnormal rising of working position/speed during speed/ position control by changing speed/position control into position/speed control when a signal/detection signal respectively subtracted by a fixed value from ...
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JPH04181001A |
PURPOSE: To steady the action of a hydraulic cylinder by comparing the latest result in the elapsed time from signal receiving performed by a hydraulic servo valve to the actuation of a hydraulic cylinder with the weighted mean of existe...
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JPH0438921B2 |
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JPH0437890B2 |
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JPH04160277A |
PURPOSE: To control a valve precisely without making the device complicated and the cost raised by stopping the supply of pulse current when the signal value from a converting means reaches less than a specified value simultaneously when...
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JPH04157202A |
PURPOSE: To keep a valve position immediately before input signal cutoff by driving a flapper with the control signal of a valve opening degree control means which detects the valve opening degree of a regulating valve to make it coincid...
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JPH0463801U |
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JPH04157203A |
PURPOSE: To miniaturize and lighten the above actuator, and provide improved responsiveness by obtaining necessary pressurized fluid pressure from a command contraction signal and a contraction force detecting signal by using a relationa...
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JPH0432243B2 |
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JPH0432242B2 |
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JPH04152407A |
PURPOSE:To omit a power supply part and to increase the output of a control signal by using an input operation signal to supply the necessary energy to each component part of a controller. CONSTITUTION:A comparator C compares an input co...
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JPH0422083Y2 |
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JPH04145201A |
PURPOSE: To perform positioning into an optional target position speedily with high accuracy by driving control valves formed of parallel-connected on-off valves through control drive parts by each valve opening signal computed from air ...
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JPH0454301U |
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JPH04136585A |
PURPOSE: To obtain an accurate electric-pneumatic positioner by providing the first series circuit and second series circuit to output the output voltage from an variable impedance element to a controller as a pneumatic signal or valve o...
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JPH04136502A |
PURPOSE: To make positioning speedily and accurately at any point by controlling electric motors for driving flow control valves, by which pressurized air is supplied and discharged from both air chambers of an air pressure actuator, acc...
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JPH04136584A |
PURPOSE: To transmit abnormality to a controller while normally operating even if a fixed resistor is broken by arranging fixed resistors and an output transmitting circuit in a transmission line to transmit the voltage between fixed res...
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JPH04136583A |
PURPOSE: To detect abnormality by means of a controller while continuously and normally functioning even if an variable impedance element is broken by providing specified parallel elements connected in parallel in the variable impedance ...
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JPH0419202Y2 |
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JPH0423121B2 |
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