Device for oxygen supply of a user in an aircraft

1. Device for oxygen supply of a user in an aircraft comprising

a breathing mask,

a stowage box for the breathing mask having a bottom side and being adapted to be fixed in a ceiling of the aircraft,

an oxygen supply hose having one end connected to the stowage box and one end connected to the breathing mask,

an aperture on the bottom side of the stowage box closed by a door, and

a leash having a first end connected to the stowage box and a second end releasably connected to the breathing mask so that, when the door is open, the mask falls and is kept hovered by the oxygen supply house with the leash,

wherein the breathing mask comprises two holes,

the device further comprises a release pin device connecting the leash to the breathing mask, said release pin device having a first pin end and a second pin end able to enter into said holes,

the first pin end and the second pin end are movable between a rest position in the holes and a release position out of the holes, and

the first pin end and the second pin end are elastically urged in the rest position.

2. The device according to claim 1 , wherein the breathing mask comprises two substantially parallel plates, each plate having one of said two holes.

3. The device according to claim 2 , wherein each of the first pin end and the second pin end is bent in a sharp angle so that the force generated by the fall of the breathing mask does not extract the first pin end and the second pin end from the holes.

4. The device according to claim 3 , wherein the release pin device further comprises a string attached near the first pin end and a pass-through through which the string slides near the second pin end so that, when the string is pulled, the first pin end and the second pin end come nearer and move out of the holes to release the breathing mask.

5. The device according to claim 2 , wherein the release pin device further comprises a string attached near the first pin end and a pass-through through which the string slides near the second pin end so that, when the string is pulled, the first pin end and the second pin end come nearer and move out of the holes to release the breathing mask.

6. The device according to claim 1 , wherein the oxygen supply hose and the leash are attached to two opposite sides of the stowage box.

7. The device according to claim 1 , wherein the oxygen supply hose has a helical shape to soften the fall of the breathing mask.

8. The device according to claim 1 , wherein the release pin device further comprises a string attached near the first pin end and a pass-through through which the string slides near the second pin end so that, when the string is pulled, the first pin end and the second pin end come nearer and move out of the holes to release the breathing mask.

9. Device for oxygen supply of a user in an aircraft comprising a breathing mask and a stowage box for the breathing mask, said stowage box being fixed in a ceiling of the aircraft and having a bottom side, the device further comprising an oxygen supply hose having one end connected to the stowage box and one other end connected to the breathing mask, an aperture on the bottom side of the stowage box closed by a door and a leash connected to the stowage box by one end and releasably connected to the breathing mask by one other end so that, when the door is open, the mask falls and is kept hovered by the oxygen supply hose and the leash,

wherein the breathing mask comprises two substantially parallel plates, each plate having a plate hole, and the device further comprises a release pin connecting the leash to the breathing mask and said release pin having two ends able to enter into said plate holes and a shape to releasably maintain the two ends in the plate holes by the elasticity of the release pin and allow a resilient movement to modify the distance between the two ends.

10. The device according to claim 9 , wherein the release pin comprises one end, one other end, and a pass-through near the one other end, the device further comprises a string, the string is attached to the release pin near said one end of the release pin and slides through the pass-through so that, when the string is pulled, the two ends come nearer and move out of the plate holes to release the breathing mask.

11. Device for oxygen supply of a user in an aircraft comprising:

a breathing mask,

a stowage box for the breathing mask having a bottom side and being adapted to be fixed in a ceiling of the aircraft, the stowage box having an aperture on the bottom side of the stowage box and a door to close said aperture,

an oxygen supply hose having one end connected to the stowage box and one other end connected to the breathing mask,

a leash having a first end connected to the stowage box and a second end releasably connected to the breathing mask so that, when the door is open, the mask falls and is kept hovered by the oxygen supply hose and the leash,

a release device connecting the leash to the breathing mask, wherein said release device has a first end, a second end, and a pass-through near the second end, and

a string connected to the release device and releasing the breathing mask from the leash when the string is pulled, wherein the string is attached near the first end and slides through the pass-through so that, when the string is pulled, the first end and the second end come nearer.

12. The device according to claim 11 , wherein the release device is movable between a rest position and a release position, the release device is elastically urged in the rest position and the string moves the release device in the release position when the string is pulled.

13. The device according to claim 11 , wherein:

the breathing mask comprises two holes, and

the first end and the second end are removably positioned in said holes.