Protective breathing device

Details Protective breathing device Protective breathing device

1988-01-07

1989-04-18

Sewell, Paul T.

Surgery

Respiratory method or device

Gas produced by electrolysis or chemical reaction

12820415, A61M 1500

Patent

active

048217115

ABSTRACT:
A protective breathing device with regeneration of the breathed air includes a regeneration cartridge arranged in the flow between a breath intake and a breathing bag. The device provides effective cooling of the inhaled air and the best possible protection of the wearer against touching the heated cartridge while keeping the overall arrangement as compact and easy to wear as possible. For this purpose, a breathing bag 16 is divided into two partial bag, the first being an exhalation pouch containing a regeneration cartridge, which is arranged to force exhaled air into a second partial bag, or inhalation bag through valving the regenerated breathing air is connected back to a breathing mouth piece.

REFERENCES:
patent: 1625419 (1927-04-01), McCaa
patent: 1983475 (1934-12-01), Lemoine
patent: 4164218 (1979-08-01), Martin
patent: 4187843 (1980-02-01), Warncke et al.
patent: 4213453 (1980-07-01), Warncke et al.
patent: 4300547 (1981-11-01), Pasternack
patent: 4409978 (1983-10-01), Bartos
patent: 4459981 (1984-07-01), Mascher et al.
patent: 4635629 (1987-01-01), Thorp et al.
patent: 4665910 (1987-05-01), Kolbe et al.

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