Linear motion valve

Details Linear motion valve Linear motion valve

1984-07-31

1985-06-18

Schwadron, Martin P.

Valves and valve actuation

Reciprocating valve

Piston

251349, 251353, 277 80, 277135, F16K 324

Patent

active

045237417

ABSTRACT:
A linear motion valve is provided. The valve spool employs magnetically permeable rings, spaced apart axially, which engage a sealing assembly having magnetically permeable pole pieces in magnetic relationship with a magnet. The gap between the ring and the pole pieces is sealed with a ferrofluid. Depletion of the ferrofluid is minimized.

REFERENCES:
patent: 3744558 (1973-07-01), Childress
patent: 4252353 (1981-02-01), Raj et al.
patent: 4284605 (1981-08-01), Pierrat
patent: 4309040 (1982-01-01), Pierrat

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