Emergency exit mask system

Details Emergency exit mask system Emergency exit mask system

1987-07-28

1988-07-19

Michalsky, Gerald A.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820123, A62B 1800

Patent

active

047578130

ABSTRACT:
An emergency exit respiratory mask device comprises a rebreathing bag, a face mask, and a head-covering cap, all formed of a single sheet of flexible transparent plastic. The sheet is folded upon itself and sealed along selected margins thereof to determine the boundaries of the bag, a filling and emptying passageway to the bag, and the cap. A mouthpiece is provided at the distal end of the passageway. A whistle is provided in the mouthpiece. An inflating spring is employed in the bag. Printed instructions are provided inside the bag and are readable through the bag material.

REFERENCES:
patent: 667481 (1901-02-01), Wood
patent: 728476 (1903-05-01), Langer
patent: 1090936 (1914-03-01), Morgan
patent: 3521629 (1970-07-01), Reynolds
patent: 3762407 (1973-10-01), Shonero
patent: 4614186 (1986-09-01), John
patent: 4710756 (1987-12-01), Thornburg et al.

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