Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1984-08-22
1985-06-18
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
Direct response valves
137517, 137859, 251368, F16K 1514
Patent
active
045236100
ABSTRACT:
A check valve is disclosed having a housing with first and second sides, the first side having an opening and the second side having an inner portion and an outer portion with openings within the inner portion, and a thin membrane within the housing and having an inner portion and an outer portion with holes within the outer portion such that, for air flows from the first side of the housing to the second side, the inner portion of the membrane will be pushed up against the inner portion of the second side of the housing to seal the openings in the inner portion of the second side and, for air flows from the second side of the housing to the first side, the membrane is pushed away from the inner portion of the second side for allowing air flow through the openings of the inner portion of the second side, through the holes in the membrane and then through the opening of the first side of the housing.
REFERENCES:
patent: 236719 (1881-01-01), Renton
patent: 256875 (1882-04-01), Brainard
patent: 335271 (1886-02-01), Chase
patent: 2897835 (1959-08-01), Philippe
patent: 2908283 (1959-10-01), Kiffer et al.
patent: 3145733 (1964-08-01), Shaw et al.
patent: 3741232 (1973-06-01), Soberski
patent: 3844529 (1974-10-01), Brandt, Jr. et al.
patent: 4141379 (1979-02-01), Manske
patent: 4388422 (1983-06-01), Gerteisen et al.
"Polycarbonates", Encyclopedia of Polymer Science and Technology, vol. 10, pp. 752-753, copyright 1969, John Wiley & Sons.
Hepperle Stephen M.
Honeywell Inc.
Joike Trevor B.
Schwadron Martin P.
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