Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1996-07-26
1997-11-18
Ferensic, Denise L.
Fluid handling
Line condition change responsive valves
Direct response valves
12820524, 12820615, F16K 1516
Patent
active
056877676
ABSTRACT:
A uni-directional fluid valve particularly for use as an exhalation valve for a filter mask comprises a flexible flap attached at one end to a concave portion of a seat. The mounting of the flap imparts to it a transverse curvature, stiffening the flap sufficiently for it to remain seated in the absence of a pressure differential across it even when orientated with the seat above the flap.
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Farid Ramyar
Ferensic Denise L.
Hernandez Pedro P.
Racal Health & Safety Limited
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