Abstract: A personal protective suit including a sealed shell equipped with connection device intended to be connected to one same pressurized air source, air distribution device having an air intake connected to the connection device, and at least one first and one second air outlet, respectively intended to supply device for delivering air to the wearer and device for ventilating the suit, wherein the air distribution device includes a valve designed to reduce the air flow rate of the second air outlet when the air pressure at the air intake is below a determined value, while maintaining the supply of air to the wearer.

Abstract: A personal protective ensemble including a sealed suit having at least one area intended to enclose the wearer's head, the suit being equipped with connection means intended to be connected to a pressurized air source, the ensemble including a protective device having a sealed hood which, arranged underneath the sealed suit, is equipped firstly with means for feeding air to the hood volume and connected to the connection means of the suit, and secondly with means for supplying outside air to the suit via an air intake that is shut and can be opened, arranged in the suit, filtering means and a mouth-piece.

Abstract: The invention concerns a personal protective suit including a sealed shell equipped with connection means intended to be connected to one same pressurized air source, air distribution means having an air intake connected to the connection means, and at least one first and one second air outlet, respectively intended to supply means for delivering air to the wearer and means for ventilating the suit, wherein the air distribution means includes a valve designed to reduce the air flow rate of the second air outlet when the air pressure at the air intake is below a determined value, whilst maintaining the supply of air to the wearer.

Abstract: The invention relates to 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, the backpiece being equipped with a coupling which, intended to collaborate with the valve, is connected to a regulator. The coupling comprises an air intake tube on which a bushing is mounted such that it can pivot and move in terms of axial translation. The bushing is mounted in a sleeve that forms an operating knob, is prevented from turning in the sleeve and is free in terms of translational movement with respect to the latter.

Abstract: The invention relates to 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, the backpiece being equipped with a coupling which, intended to collaborate with the valve, is connected to a regulator. The coupling comprises an air intake tube on which a bushing is mounted such that it can pivot and move in terms of axial translation. The bushing is mounted in a sleeve that forms an operating knob, is prevented from turning in the sleeve and is free in terms of translational movement with respect to the latter. The sleeve is mounted such as to pivot on the coupling about the axis of the tube and is prevented from translational movement with respect to this tube.