Fluid-pressure driving device

Details Fluid-pressure driving device Fluid-pressure driving device

1985-07-23

1987-05-26

Look, Edward K.

Motors: expansible chamber type

Differential

Motive fluid constantly applied to one working member face

91461, F15B 1517

Patent

active

046675698

ABSTRACT:
A fluid-pressure driving device including a driving cylinder for producing a driving force, a main control valve for controlling the direction of movement of the driving cylinder and a fluid under pressure, and a pilot valve for controllng the main control valve. The main control valve includes a valve member in the form of a hollow cylinder, and a valve body constituting a part of a cylinder body of the driving cylinder. The valve member of the hollow cylindrical configuration is slidably interposed between the valve body and a sleeve of the pilot valve.

REFERENCES:
patent: 3521535 (1970-07-01), Oelrich
patent: 3954249 (1976-05-01), Gratzmuller
patent: 3969985 (1976-07-01), Greiger et al.
patent: 3999464 (1976-12-01), Greiger et al.
patent: 4096784 (1978-06-01), Ongaro
patent: 4175589 (1979-11-01), Nakamura et al.
patent: 4204461 (1980-05-01), Gratzmuller
patent: 4276809 (1981-07-01), Kast
patent: 4289063 (1981-09-01), Nakamura

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