Compatible smoke and oxygen masks for use on aircraft

Details Compatible smoke and oxygen masks for use on aircraft Compatible smoke and oxygen masks for use on aircraft

1984-02-13

1985-12-24

Recla, Henry J.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820115, 12820525, 128912, 12820227, 12820524, 12820125, A62B 700

Patent

active

045599394

ABSTRACT:
The invention is a smoke mask and oxygen mask combination that can be coupled together so that protection from toxic fumes and supplemental oxygen gas can be provided to the passenger during a concurrent fire and decompression aboard an aircraft. A protrusion 70' of a smoke mask 26' is provided with a flat surface 230 which is adapted to mate with an internal flat surface 234 of an oxygen mask 200' providing alignment of an oxygen inlet valve 210, vent valve 206 and cabin air inlet valve 208 on the oxygen mask with an inlet valve 170 vent valve 74 and plug, respectively, on the protrusion 70'. In addition, a resilient locking element 236 on the oxygen mask 200' engages a groove 232 on the protrusion 70' when the oxygen mask 200' is installed releasably securing the oxygen mask to the protrusion.

REFERENCES:
patent: 3762407 (1973-10-01), Shonerd
patent: 4098271 (1978-07-01), Maddock
patent: 4404969 (1983-09-01), Cresswell et al.
patent: 4440164 (1984-04-01), Werjefelt
patent: 4494538 (1985-01-01), Ansite

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