Pressure medium driven device performing linear motion

Pumps – Motor driven – Fluid motor

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Details

91224, 91225, 91226, F04B 908

Patent

active

056832303

ABSTRACT:
A pressure medium operated device generating to-and-fro motion to one or several pistons or a similar motion transmitting arm. The device includes a primary piston to which motion is brought in transmitting pressure medium alternately to both sides of the piston and control valves located inside the primary piston for controlling the pressure medium which moves the primary piston.

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patent: 208449 (1878-09-01), Winchester
patent: 397958 (1889-02-01), Barth
patent: 3152016 (1964-10-01), Drushella
patent: 3582238 (1971-06-01), Devine
patent: 3788781 (1974-01-01), McClocklin
patent: 3939755 (1976-02-01), Tabonr
patent: 4031812 (1977-06-01), Koshelev
patent: 4352644 (1982-10-01), Landrum et al.
patent: 4846634 (1989-07-01), Vos et al.
patent: 4981418 (1991-01-01), Kingsford et al.

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