A breathing equipment

Details A breathing equipment A breathing equipment

A - Human Necessities

62

B

A62B 9/02 (2006.01) A62B 7/04 (2006.01) B63C 11/22 (2006.01)

Patent

CA 2180417

Breathing equipment for use under water, or in a non-respiratory atmosphere, and including a breathing mask (1), a mouth-piece or the like, and a respiratory circuit (2) with a volumetrically variable gas accumulator (7). In addition, there is included a metering bottle (26) connected to the respiratory circuit via a valve device (12), which alternatingly connects the bottle to a source (9) of fresh respiratory gas for filling the bottle and to the circuit for emptying the bottle. The valve device (12) is adapted to regulate filling and emptying the bottle (26) in response to the respiratory cycle, such that fresh respiratory gas is supplied to the circuit (2) during each such cycle. The device (12) is suitably implemented so that the amount filling the metering bottle (26) is adjusted in response to respiratory volume.

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