Mask for pressure breathing

Details Mask for pressure breathing Mask for pressure breathing

1984-08-03

1987-07-07

Recla, Henry J.

Surgery

Respiratory method or device

Face mask covering a breathing passage

A62B 700

Patent

active

046779779

ABSTRACT:
A face mask for pressure breathing. The mask has a body with a sealing boundary shaped to fit over the bridge of a wearer's nose, downward past the sides of his nose and mouth and across his mental protuberance. The sealing boundary includes a reflective primary seal and a secondary seal. The reflective seal lays flexibly against the wearer's face. The secondary seal is relatively rigid relative to the reflective seal so as to indent into the face when pressed against it in order to respond to stringent conditions of g forces and differential pressures.

REFERENCES:
patent: 2133699 (1938-10-01), Heidbrink
patent: 2166164 (1939-07-01), Lehmberg
patent: 2465973 (1949-03-01), Bulbulian
patent: 2837090 (1958-06-01), Bloom et al.
patent: 2939458 (1960-06-01), Lundquist
patent: 2970593 (1961-02-01), Seeler
patent: 3079917 (1963-03-01), Pate

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