Fluid handling – Systems – Supply and exhaust
Patent
1993-10-06
1995-10-03
Michalsky, Gerald A.
Fluid handling
Systems
Supply and exhaust
1374546, 1375961, 251332, 251900, F15B 13042
Patent
active
054544009
ABSTRACT:
A fluid directional control valve has at least one working fluid control port and a pressure inlet controlled with respect thereto by a poppet valve where zero leakage sealing is achieved by provision of a poppet seat which combines a resilient seal portion with a non-deformable poppet supporting portion; has a second, axially aligned valve, which may also be a poppet assembly, for controlling fluid exhaust flow from the controlled port and has an extended plunger whereby actuation of the second valve blocks exhaust flow while unseating the pressure control poppet.
REFERENCES:
patent: 1373599 (1921-04-01), Clark
patent: 2477237 (1949-07-01), Carr
patent: 2535785 (1950-12-01), Couri
patent: 2658523 (1953-11-01), Johnson
patent: 2959188 (1960-11-01), Kepner
patent: 3272218 (1966-09-01), Johnson
patent: 3326239 (1967-06-01), Saint-Joanis et al.
patent: 4014510 (1977-03-01), Smith
patent: 4071046 (1978-01-01), Cates
patent: 4304258 (1981-12-01), Mitchell
Garner Charles C.
Michalsky Gerald A.
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