Fluid handling – Systems – Sequentially progressive opening or closing of plural valves
Patent
1980-06-18
1981-12-08
Rosenthal, Arnold
Fluid handling
Systems
Sequentially progressive opening or closing of plural valves
13763015, 251 30, F16K 31385, F16K 3106
Patent
active
043042643
ABSTRACT:
An improved solenoid operated valve utilizing a pilot valve nested within a main valve having a dual mode capability, fluid pressure assisted or solenoid powered, wherein the main valve's stem section is mounted within a tubular pilot armature and stem for movement toward the main armature to thereby open the pilot valve and then the main valve.
REFERENCES:
patent: Re25338 (1963-02-01), Olson
patent: 2575272 (1951-12-01), Harris
patent: 2693825 (1954-11-01), Carr
patent: 3100103 (1963-08-01), Bullard
patent: 3114532 (1963-12-01), Gray et al.
patent: 3405906 (1968-10-01), Keller
patent: 3737141 (1973-06-01), Zeuner
McClintock Malcolm S.
Wells Robert A.
Rosenthal Arnold
Target Rock Corporation
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