Cylinder positioning systems

Details Cylinder positioning systems Cylinder positioning systems

1977-01-21

1978-10-24

Maslousky, Paul E.

Expansible chamber devices

With flexible transmission element secured to working member

92 5R, 91363R, 91383, F01B 900, F15B 903, F15B 909, F01B 3112

Patent

active

041215044

ABSTRACT:
A linear positioning cylinder drive has a piston connected at one end to a load and at the other end to a cable. The cable is secured to a pulley secured to a shaft urged in a takeup direction by a coil spring or hydraulic motor. The piston is moved by a hydraulic pump through a servo valve actuated by a circuit controlled by a transducer driven by the shaft. In one embodiment, the transducer is rotary and in another embodiment the transducer is linear.

REFERENCES:
patent: 2740610 (1956-04-01), Gatti
patent: 3043093 (1962-07-01), Stott
patent: 3160836 (1964-12-01), Farley

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