Delivery conduit for a breathing equipment

Details Delivery conduit for a breathing equipment Delivery conduit for a breathing equipment

A - Human Necessities

62

B

A62B 7/02 (2006.01) A62B 9/04 (2006.01)

Patent

CA 2240137

Breathing equipment intended for use in toxic atmospheres or under water, comprising a breathing mask (1) or like device, a breathing gas source (9) and conduit means (15, 16) for delivering gas from source to mask. The conduit means includes an inner conduit (15) which functions to deliver to the mask (1) gas from a pressure regulator (12) provided adjacent the source (9), and an outer conduit (16) which surrounds the inner conduit. The outer conduit provides protection for the inner conduit and defines therewith a passageway (17) which is sealed against the surroundings and which is connected to the mask (1). This enables any gas that leaks from the inner conduit to be delivered to the mask.

Equipement respiratoire destiné à être utilisé en atmosphère t oxique ou sous l'eau. L'équipement comprend un masque de respiration (1) ou un dispositif analogue; une source de gaz de respiration (9) et un système de conduites (15, 16) assurant l'apport du gaz de la source au masque. Ce système de conduites comprend un tube interne (15) ayant pour fonction d'apporter au masque (1) le gaz provenant d'un régulateur de pression (12) installé à proximité de la source (9), et d'un tube externe (16), entourant le premier. Ce tube externe assure une protection au tube interne et définit entre ce dernier et lui-même un passage (17) étanche par rapport au milieu ambiant et relié au masque (1). Ainsi, toute fuite de gaz provenant du tube interne est envoyée dans le masque.

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