Stowage box for breathing mask

1. A breathing assembly, comprising:

a breathing mask comprising a face mask portion and a rigid part directly fixed to the the face mask portion,

a stowage box frame forming a receptacle for the breathing mask, said stowage box frame having an open face for inserting and extracting the breathing mask, said stowage box frame further having guiding elements that cooperate with the rigid part to guide the breathing mask along a sliding axis between a proximal position and a stowage position, and

a pneumatic assembly comprising a valve movable between an opened position in which the valve enables the feed of the breathing mask with breathing gas and a closed position in which the valve prevents the feed of the breathing mask with breathing gas, wherein movement of the breathing mask along the sliding axis from the proximal position to the stowage position closes the movable valve from the opened position to the closed position and wherein the movable valve is maintained in the closed position as long as the breathing mask is in the stowage position, and

the valve is opened when the breathing mask is slided along the sliding axis from the stowage position to the proximal position.

2. The breathing assembly according to claim 1 wherein:

the pneumatic assembly is supported by the stowage box frame, and

in the stowage position the rigid part of the breathing mask pushes the valve in the closed position.

3. The breathing assembly according to claim 2 , wherein the valve is urged toward the opened position by the pressure of the breathable gas.

4. The breathing assembly according to claim 3 , wherein

the breathing mask further comprises an abutment lug movable with respect to the rigid part between a protruding position and a retracted position,

the stowage box frame comprises at least one substantially vertical groove adapted to receive the abutment lug, said abutment lug being biased into the protruding position, and

when the breathing mask is in the stowage position, said abutment lug being engaged into said groove in the protruding position and disengaged from said groove in the retracted position.

5. The breathing assembly according to claim 3 , wherein the valve comprises a cylinder sliding in a tube between the opened position and the closed position, the pneumatic assembly further comprises a U-shaped duct in which the breathable gas is intended to circulate to feed the breathing mask, the sliding movement of said cylinder being parallel to the base of the U and the cylinder obstructing the base of U-shaped duct in the closed position.

6. The breathing assembly according to claim 2 wherein:

the valve is urged in the opened position,

the rigid part of the breathing mask is prevented from sliding from the stowage position to the proximal position by abutment against the stowage box frame.

7. The breathing assembly according to claim 6 wherein the valve moves from the opened position to the closed position by sliding along the sliding axis.

8. The breathing assembly of claim 1 , wherein the rigid part comprises two parts configured to be pinched between a user's fingers.

9. The breathing assembly of claim 8 , wherein pinching of the two parts causes one of the parts to be moved inward with respect to the other part and to create a securement connection for the breathable mask in the stowage box frame.

10. A breathing assembly comprising:

a face mask portion and a breathing mask comprising a rigid part directly fixed to the face mask portion,

a stowage box frame forming a receptacle for the breathing mask, said stowage box frame having an open face for inserting and extracting the breathing mask, said stowage box frame further having guiding elements that cooperate with the rigid part to guide the breathing mask along a sliding direction between a proximal position and a stowage position, and a securement system to maintain the breathing mask in the stowage box frame and

a pneumatic assembly comprising a valve movable between an opened position in which the valve enables the feed of the breathing mask with breathing gas and a closed position in which the valve prevents the feed of the breathing mask with breathing gas, the valve being urged in the opened position,

wherein in the stowage position, the valve is in the closed position due to the positioning of the breathing mask against the securement system, and the rigid part of the breathing mask is releasably prevented from sliding from the stowage position to the proximal position by abutment against the stowage box frame.

11. The breathing assembly according to claim 10 wherein the valve moves from the opened position to the closed position by sliding along the sliding direction.

12. A breathing assembly comprising:

a face mask portion and a breathing mask comprising a rigid part fixed to the face mask portion,

a stowage box frame forming a receptacle for the breathing mask, said stowage box frame having (i) an open face for inserting and extracting the breathing mask and (ii) guiding elements that cooperate with the rigid part to guide the breathing mask along a sliding direction between a release position and a stowage position, and

a pneumatic assembly comprising a sliding valve that is movable along the sliding direction between an opened position in which the valve enables the feed of the breathing mask with breathing gas, and a closed position in which the valve prevents the feed of the breathing mask with breathing gas, wherein the valve remains urged in the opened position,

wherein movement of the breathing mask along the sliding direction to the stowage position causes the rigid part of the breathing mask to push the valve along the sliding direction to move the sliding valve to the closed position, and wherein movement of the breathing mask along the sliding direction to the release position causes release of the sliding valve along the sliding direction such that the sliding valve moves to its urged opened position.