Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1991-03-11
1992-09-08
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
251 3005, F16K 3106, F16K 5100
Patent
active
051451450
ABSTRACT:
A pilot operated electromagnetically actuated valve having a flexible diaphragm main valve operator with a rigid insert forming the pilot valve seat and passage. The pilot valving chamber cover serves as an armature pilot valve guide and also has plural spaced ribs engaging and guiding movement of the rigid insert and pilot valve seat. A separate inlet passage having an annular filter formed by circumferentially spaced grooves and a resilient flange provided on a disc member inserted in the valve inlet flow to a remote pilot bleed hole in the cover for supplying the pilot valving chamber.
REFERENCES:
patent: 4178573 (1979-11-01), Swanson
patent: 4534537 (1985-08-01), Zukausky
patent: 4981155 (1991-01-01), Pick et al.
patent: 4987920 (1991-01-01), Donner
Cooper Robert
Donner Richard
Pick James
Eaton Corporation
Johnston R. A.
Lee Kevin L.
Schwadron Martin P.
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