Pop-off gas evacuator valve for anesthesia machine

Details Pop-off gas evacuator valve for anesthesia machine Pop-off gas evacuator valve for anesthesia machine

1981-05-26

1983-09-27

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137469, 137540, F16K 1706

Patent

active

044063024

ABSTRACT:
A pop-off valve (92) having a significantly improved pressure-flow characteristic and resistance to vibration or "honking." The valve includes a poppet (154) having a flat bottom end wall exposed to pressure and a peripheral lip with a frusto-conical surface (158) for engagement with a valve seat 140. A vent-hole (196) in the poppet further enhances the vibration characteristics of the valve, and a dampening chamber (186) downstream of the poppet dampens any remaining vibrations.

REFERENCES:
patent: 1252940 (1918-01-01), Osborne
patent: 2628633 (1953-02-01), Folmsbee
patent: 2792015 (1957-05-01), Smith
patent: 2940472 (1960-06-01), Chilcoat
patent: 3393702 (1968-07-01), Ferrill
patent: 3406712 (1968-10-01), Weise

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