Crew oxygen mask stowage assembly including selective...

Details Crew oxygen mask stowage assembly including selective... Crew oxygen mask stowage assembly including selective...

A - Human Necessities

62

B

A62B 18/08 (2006.01) A62B 25/00 (2006.01) B64D 10/00 (2006.01) B64D 11/00 (2006.01)

Patent

CA 2450136

An improved crew oxygen mask and stowage assembly combination (10) is provided including a stowage box (12) equipped with a door (22), with a crew mask assembly (14) made up of a mask (48), gas-conveying tubing (50) and valve unit (46). The box (12) also includes a valve-controlling switch lever (44) for selective gas-on or gas-off operation of valve unit (46). In normal conditions, the mask (48) and tubing (50) are stowed within box (12) with lever (44) oriented in the gas-on position, so that the tubing (50) is pressurized and mask (48) may be quickly pulled from the box (12) and used. After such use, the switch lever (44) is shifted to the gas-off position, causing the tubing (50) to be depressurized; this allows easy restowage of the tubing (50) and mask (48) within the box (12). However, when door (22) is closed, the switch lever (44) is cammed back to the gas-on position, thereby repressurizing tubing (50) and returning the combination (10) to a full-ready condition.

Cette invention concerne un ensemble combiné (10) masque à oxygène équipage-rangement perfectionné comprenant un boîtier (12) de rangement pourvu d'une porte (22), et un ensemble (14) masque équipage composé d'un masque (48), d'un tuyau (50) d'alimentation en gaz et d'une unité soupape (46). Ce boîtier (12) comprend également un bouton de commutation (44) de commande de soupape permettant de sélectionner la position ouverte ou fermée de l'alimentation en gaz de l'unité soupape (46). Dans des conditions normales, le masque (48) et le tuyau (50) sont rangés dans le boîtier (12), le bouton étant orienté dans la position ouverte d'alimentation en gaz, de sorte que le tuyau (50) soit sous pression et que le masque (48) puisse être rapidement retiré du boîtier (12) et utilisé. Après utilisation, le bouton de commutation (44) est passé en position fermée d'alimentation en gaz, entraînant la dépressurisation du tuyau (50) et permettant ainsi un rangement facile du tuyau (50) et du masque (48) dans le boîtier (12). Toutefois, lorsque la porte (22) est fermée, le bouton de commutation (44) passe à nouveau en position ouverte d'alimentation en gaz, ce qui entraîne la repressurisation du tuyau (50) et rend l'ensemble combiné à nouveau (10) prêt à l'emploi.

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