Valve spool positioner

Details Valve spool positioner Valve spool positioner

1977-02-09

1979-01-09

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

92165PR, 137269, 13759613, 13762563, 13762566, F15B 13042

Patent

active

041335104

ABSTRACT:
A pilot operated valve comprised of a cylindrical grooved spool having axially aligned throttling slots which require alignment with certain ports in an encompassing housing is prevented from rotation in the housing during reciprocation therein by a noncircular tang extending outwardly of the housing and fitted in a specially configured pilot chamber formed in an attached cover.

REFERENCES:
patent: 2956549 (1960-10-01), Malpass
patent: 3451423 (1969-06-01), Priese
patent: 3731700 (1973-05-01), Cohen
patent: 3771564 (1973-11-01), Bianchetta et al.
patent: 3847180 (1974-11-01), Kroth et al.

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