Diaphragm for a breath-controlled dosaging valve

Details Diaphragm for a breath-controlled dosaging valve Diaphragm for a breath-controlled dosaging valve

1979-11-07

1981-12-22

Hershkovitz, Abraham

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

92103F, 92103SD, 12820426, 137DIG9, 528421, A62B 704

Patent

active

043065848

ABSTRACT:
A diaphragm for a dosaging valve in which one side of the diaphragm is exposed to the surrounding environment and the other side is exposed to a respiratory or breathing gas, comprises, a central layer or insert which is coated on both sides and an outer layer overlying the insert and facing the surrounding medium which comprises a silicone elastomer and an inner layer overlying said insert and facing the interior of the housing and exposed to the breathing gas which comprises a polypropylene oxide rubber.

REFERENCES:
patent: 3040762 (1962-06-01), Spiotta
patent: 3216416 (1965-11-01), Mitchell
patent: 3384603 (1968-05-01), Elfers
patent: 3776863 (1973-12-01), Shibatani
patent: 3874052 (1975-04-01), Schantz
patent: 3956544 (1976-05-01), Harrington
patent: 4022114 (1977-05-01), Hansen
patent: 4142021 (1979-02-01), Dixon
patent: 4178961 (1979-12-01), Warncke

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