| 摘要 |
1. A system for extracting from a pressurised gas container such as an interchangeable cartridge (2) forming a non-returnable packing, of the type comprising : - a receptacle (1) intended to contain at least part of the cartridge (2) and provided on its upper part with a thread (1c, 1d) ; - a flange (8) intended to be placed on the said receptacle (1) and provided on its lower part with a thread (8a) complementary to the thread (1c, 1d) of the receptacle (1) ; - an annular tightening means (5b) intended to be applied in a tight manner against the central part of the upper wall of the cartridge (2) ; - a gas extracting head (5) fixed to the centre of the flange (8) on the axis of the latter and comprising an axial means for the perforation of the cartridge on the interior of the tightening means (5b), characterised in that the receptacle (1) comprises two shells (1a, 1b) articulated one in relation to the other, and in that the threads of the receptacle (1) and of the flange (8) are arranged respectively on the exterior and on the interior. |
