Breathing mask with face-contact actuated overpressure generatin

Details Breathing mask with face-contact actuated overpressure generatin Breathing mask with face-contact actuated overpressure generatin

1993-10-21

1996-03-19

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820525, 12820427, 12820624, A62B 704, A62B 1802, A62B 1810, F16K 3126

Patent

active

054996244

ABSTRACT:
A breathing mask (1) with overpressure in the mask interior space (26) with a demand oxygen system (8) at a connection piece (32) of the breathing mask, with a switching member (11) at the demand oxygen system for generating the overpressure, and with an actuating element (23) acting on the switching member at the connection piece for switching on the overpressure. Switchover to overpressure operation is possible only when the breathing mask has been put on by providing an actuating element (23) led out of the connection piece (32) at a boundary area (6) between the breathing mask (1) and the face of a mask user (4) such that it is brought into the switched-on position when the breathing mask is put on by interaction with a portion of the surface of the face of the mask user (4).

REFERENCES:
patent: 3019788 (1962-02-01), Hughes
patent: 3073301 (1963-01-01), Hay et al.
patent: 3186407 (1965-06-01), Morrison
patent: 3316907 (1967-05-01), Goupil
patent: 3629868 (1971-12-01), Greenlee
patent: 4119097 (1978-10-01), Spector
patent: 4889113 (1989-12-01), Pelloux-Gervais et al.
patent: 5007421 (1991-04-01), Stewart

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