Multi-user extended operation respirator

Details Multi-user extended operation respirator Multi-user extended operation respirator

1974-07-29

1976-08-10

Michell, Robert W.

Surgery

Truss

Pad

128191R, 128202, A62B 702

Patent

active

039735621

ABSTRACT:
A respiratory protective device is disclosed. The device is of a type which may be used by several persons for an extended length of time in a noxious environment. The invention is characterized by a source of oxygen-rich gas, a breathing bag means, a valving system to vent and replenish the breathing bag means, a breathing conduit loop having inhalation and exhalation manifolds and a means therebetween to deliver breathable gas to several users at the same time, and a scrubber to remove carbon dioxide from exhaled gas. Special features include a unique dual alternately active breathing bag means and an assist means for movement of exhaled gas through the scrubber.

REFERENCES:
patent: 1370590 (1921-03-01), Kamieniecki
patent: 2332662 (1943-10-01), Nathanson
patent: 3016053 (1962-01-01), Medovick
patent: 3219034 (1965-11-01), Kalenik
patent: 3575167 (1971-04-01), Michielsen
patent: 3577988 (1971-05-01), Jones
patent: 3722510 (1973-03-01), Parker
patent: 3805590 (1974-04-01), Ringwall et al.
patent: 3815592 (1974-06-01), Staub, Jr.

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