Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1983-06-14
1985-08-13
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
92 98D, 251 38, 251 45, F16K 3104, F16K 3140
Patent
active
045345376
ABSTRACT:
The pilot operated valve assembly includes a flexible diaphragm (A) which selectively engages a valve seat (B) to open and close a fluid passage through the valve. The diaphragm has a plurality of filtering apertures 20 and an inward peripheral attaching projection 80. A diaphragm insert (C) is frictionally received in the diaphragm. The diaphragm insert has a pilot supply aperture 74 in fluid communication with a peripheral recess 76 extending inward from a peripheral edge. The diaphragm filtering apertures 20 are disposed in fluid communication with the peripheral recess 76 and the pilot supply aperture 74. The insert peripheral edge has a peripheral valley 82 for receiving the peripheral projection 80 of the diaphragm. The insert has a pilot outlet aperture 66 which is selectively opened and closed by an armature assembly (D). A guide shell (E) aligns the armature assembly (D) with the pilot outlet aperture 66 and defines a pilot reservoir with the diaphragm (A).
REFERENCES:
patent: 2936780 (1960-05-01), Pratt
patent: 3136229 (1964-06-01), Bauman
patent: 3333602 (1967-08-01), Erickson
patent: 3352209 (1967-11-01), Cripe
patent: 3358566 (1967-12-01), Palmer
patent: 3483800 (1969-12-01), Golden
patent: 3483823 (1969-12-01), Palmer
patent: 3593957 (1971-07-01), Dolter et al.
patent: 3672627 (1972-06-01), McCarthy et al.
patent: 4174824 (1979-11-01), Kolze
Eaton Corporation
Walton George L.
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