Postive flow rebreather

A - Human Necessities – 62 – B

Patent

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Details

A62B 19/00 (2006.01)

Patent

CA 2594327

A closed-loop rebreather, comprising a housing adapted to allow forward and backward passage of air during operation of the rebreather, a CO2 adsorbing canister contained within the housing, a counter lung extending from the housing, such that during rebreather operation, the air passes forward through the canister, into the counter lung and back through the housing, after which the air is recycled as forward passing air. The rebreather further including a bottle of compressed O2 operatively associated with the housing and adapted to continuously release O2 gas into the counter lung during rebreather operation.

La présente invention concerne un respirateur à recirculation comprenant une enveloppe conçue pour permettre le passage de l'air vers l'arrière et vers l'avant pendant le fonctionnement du respirateur, une cartouche d'adsorption de gaz carbonique renfermée dans l'enveloppe, un circuit d'alimentation auxiliaire partant de l'enveloppe, de façon que pendant le fonctionnement du respirateur, l'air passe vers l'avant en traversant la cartouche, arrive dans le circuit auxiliaire et revienne dans l'enveloppe, après quoi l'air est recyclé comme tout l'air passant vers l'avant. Ce respirateur comporte en plus une bouteille d'oxygène comprimé fonctionnellement associé à l'enveloppe et conçue pour libérer en continu de l'oxygène gazeux dans le circuit auxiliaire pendant le fonctionnement du respirateur à recirculation.

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