Breathing apparatus

Details Breathing apparatus Breathing apparatus

1975-07-30

1977-04-12

Michell, Robert W.

Surgery

Truss

Pad

128202, A62B 702, A61M 1600

Patent

active

040168760

ABSTRACT:
Breathing apparatus which incorporates a sensing device operable to adjust the amount of breather's exhaled gas captured in a gas collector section as a direct function of the carbon dioxide content of the exhalation. The amount of exhaled gas captured is sufficiently low in carbon dioxide (CO.sub.2) content to permit rebreathing on the next inhalation, at which time the sensor again adjusts the volume of exhaled gas to be captured. In the one embodiment, a fire fighter's breathing system is described wherein the gas collector section is integral with the breathing mask worn by the fire fighter.

REFERENCES:
patent: 3613665 (1971-10-01), Gorsuch
patent: 3694164 (1972-09-01), Guenther
patent: 3695261 (1972-10-01), Emmons
patent: 3716337 (1973-02-01), Jones
patent: 3923053 (1975-12-01), Jansson
M.I.T. Design and Construction of a New Respiratory Protective Device for Firefighters, David G. Jansson, pp. 1-13, Feb. 1973.

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