Abstract: Described are elastic tubular devices including an inner tube (23) made of an elastic and gas impermeable material; and a sheath (21) surrounding the inner tube and made of a woven cloth of flame resistant meta-aramid yarns, wherein the tubular device has a longitudinal extension of at least approximately 1.4 when inflated by a gas having a pressure of at least approximately 0.5 bar.

Abstract: Embodiments of the invention provide a breathing mask for aircraft crewmember. The breathing mask includes an on-demand regulator with an inlet connected to a source of breathing gas and an outlet to exhaust the breathing gas. The outlet has an aperture controlled by a movable valve having an open position when the crewmember breathes out and a closed position when the crewmember breathes in. The breathing mask also has a latch member operable by a crewmember to latch the valve in the open position, the latch member including an unlocking member to release the valve when the cabin pressure is below a predetermined value.

Abstract: An elastic tubular device comprising—an inner tube (23) made of an elastic and gas imperméable material; and, —an sheath (21) surrounding the inner tube and made of a woven cloth of flame résistant meta-aramid yarns, wherein the tubular device has a longitudinal extension of at least approximately 1,4 when inflated by a gas having a pressure of at least approximately 0.5 bar.