Fluid operating device

Details Fluid operating device Fluid operating device

1984-08-03

1985-08-13

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

417417, 417505, 251 65, 310 32, F04B 704, F04B 1704, F16K 3108, H02K 3310

Patent

active

045347140

ABSTRACT:
A fluid operating device including a cylinder assembly with a cylinder bore and a pair of pistons slidably disposed therein. A plurality of electromagnets are mounted on each piston in opposed relation and extend the pistons by magnetic repulsion when energized. Inlet and outlet valves are provided in the cylinder and include permanent magnet valve members which open and close the valves upon energization and de-energization of the electromagnets.

REFERENCES:
patent: 1007275 (1911-10-01), Desmond
patent: 2721024 (1955-11-01), Zeh
patent: 2785368 (1957-03-01), Moller
patent: 3274985 (1966-09-01), Fowle et al.
patent: 3469163 (1969-09-01), Mathews
patent: 3485441 (1969-12-01), Eaton
patent: 3910729 (1975-10-01), Jepsen et al.
patent: 4150925 (1979-04-01), Perkins
patent: 4421464 (1983-12-01), Schmidt et al.
patent: 4434968 (1984-03-01), Smith

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