La Spirotechnique Industrielle Et Commerciale

Henri Paole

Alain Ronjat

Breathing apparatus for diving of the type comprising a breathing bag (13), a mouthpiece (30), inhaling and exhaling ducts (16 and 17) connected to the bag and to the mouthpiece these inhaling and exhaling ducts being respectively provided with inhaling and exhaling non return valves (18 and 19), and a so called 'drainage' device. The apparatus further comprises a device (22) for measuring the volume of inhaled and exhaled gas. The draining device comprises a switching means (21) which, in so called 'operating' position, is adapted to direct the flow towards the exhaling valve (19), and in so called 'non operating' position is adapted to direct the exhaled flow towards an outlet drain (23).

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Villemomble, France

Henri Paole