Patent ID: 7891357

Claim:
Breathing apparatus, particularly of the open-circuit type, comprising a backpiece equipped with means, particularly involving straps, to allow it to be worn on the back of a wearer, the backpiece being intended to support at least one cylinder equipped with a valve comprising a tapped internal housing, the backpiece being equipped with a coupling which, intended to collaborate with the valve, is connected to a regulator, wherein the coupling comprises an air intake tube, protruding outward, on which a bushing is mounted such that it can pivot and move in terms of axial translation, the bushing comprising an externally threaded first region situated toward the free end of the tube and intended to collaborate with the tapped housing of the valve of the cylinder, and a second region intended to be mounted in a sleeve that forms an operating knob, the screw-forming bushing being prevented from turning in the sleeve and free in terms of translational movement with respect to the latter, the sleeve being mounted such that it can pivot on the coupling about the axis of the tube and prevented from translational movement with respect to this tube.