Respirator

Details Respirator Respirator

1997-05-20

1998-06-16

Lewis, Aaron J.

Surgery

Respiratory method or device

Gas produced by electrolysis or chemical reaction

12820512, 12820522, A61M 1500

Patent

active

057655499

ABSTRACT:
A respirator to be worn in front of the chest with regeneration of the breathing air, containing a regenerating cartridge with a plurality of chemical layers, a breathing bag, a connection piece on the side of the breathing bag located opposite the regenerating cartridge, a breathing hose pointing from the connection piece to the user, and an oxygen-releasing starting device at the regenerating cartridge. The supply of oxygen into the breathing bag and the wear properties are improved by the breathing bag being designed as a bag lying flat on the regenerating cartridge and having a ring-shaped hose part, which can be laid around the neck of the user. This provides a neck opening formed within the breathing bag. An opening is provided in the chemical layer located opposite the breathing bag. A starting device is accommodated in this opening such that it is in flow connection with a collector chamber opening into the breathing bag.

REFERENCES:
patent: 2456130 (1948-12-01), Lambertsen
patent: 2483116 (1949-09-01), Yarbrough
patent: 4140765 (1979-02-01), Martin et al.
patent: 4154234 (1979-05-01), Baker
patent: 4164218 (1979-08-01), Martin
patent: 4233971 (1980-11-01), Gronau et al.
patent: 4840170 (1989-06-01), Dahrendorf et al.
patent: 5113854 (1992-05-01), Dosch et al.
patent: 5203325 (1993-04-01), Carr
patent: 5222479 (1993-06-01), Brauer et al.
patent: 5267558 (1993-12-01), Haertle et al.

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