Breathing mask with an autonomous inflatable harness.

Details Breathing mask with an autonomous inflatable harness. Breathing mask with an autonomous inflatable harness.

A - Human Necessities

62

B

A62B 18/08 (2006.01)

Patent

CA 2660416

A breathing mask (1) for aircraft crewmember or passenger comprises a rigid portion (3) to be fit against the face of an user, said rigid portion comprising elements to bring a breathable gas to the user. The breathing mask further comprises an extensible harness (4) having end portions (5) connected to said rigid portion and including an inflatable element (6) connected to a source (7) of pressurized gas through a manually operable valve which delivers the pressurized gas to the inflatable element for extending the harness when actuated, and which reduces the pressure in said inflatable element to retract the harness and to cause the rigid portion to engage the face of the user when released. The source of pressurized gas is an autonomous container (6) rigidly fixed to the rigid portion and containing the pressurized gas.

L'invention concerne un masque respiratoire (1) pour des membres d'équipage ou des passagers d'un aéronef, comprenant une partie rigide (3) à placer contre le visage d'un utilisateur, ladite partie rigide comprenant des éléments pour fournir un gaz respirable à l'utilisateur. Le masque respiratoire comprend en outre un harnais extensible (4) comprenant des parties d'extrémité (5) connectées à ladite partie rigide et comprenant un élément gonflable (6) connecté à une source (7) de gaz sous pression par une soupape à commande manuelle qui délivre le gaz sous pression à l'élément gonflable pour étendre le harnais lorsqu'il est actionné, et qui réduit la pression dans ledit élément gonflable pour rétracter le harnais et pour amener la partie rigide à venir au contact du visage de l'utilisateur lorsqu'il est relâché. La source de gaz sous pression est un réservoir autonome (6) qui est fixé de façon rigide à la partie rigide et qui contient le gaz sous pression.

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