A breathing aid for enabling a person buried by an avalanche to breathe has a housing which includes an inhalation channel comprising a valve situated in the housing, which automatically opens during inhalation and automatically closes during exhalation, and an exhalation channel comprising a valve situated in the housing, which automatically closes during inhalation and automatically opens during exhalation, wherein the inhalation channel and the exhalation channel open into a mouthpiece situated on the housing, and the housing includes at least one inhalation opening into which the inhalation channel opens, wherein the housing is designed as a handle which can be gripped by a user's hand and brought to the mouth.

A portable device for inflating at least one envelope includes an inlet for surrounding air (1), at least one nonreturn valve, at least one compressed gas inlet (2), at least one intake chamber (3), at least one connection, such as an acceleration cone (5), with a longitudinal median symmetry axis (X, X), arranged in the extension of at least one intake chamber (3), and connected to at least one inflatable envelope, and an intermediate chamber connecting at least one compressed gas inlet (2) to at least one intake chamber (3). The intermediate chamber and the at least one intake chamber (3) are separated by a wall arranged transversely to the axis (X, X) and connected by at least one orifice located in the transverse wall (8).

A portable device for inflating at least one envelope includes an inlet for surrounding air (1), at least one nonreturn valve, at least one compressed gas inlet (2), at least one intake chamber (3), at least one connection, such as an acceleration cone (5), with a longitudinal median symmetry axis (X, X), arranged in the extension of at least one intake chamber (3), and connected to at least one inflatable envelope, and an intermediate chamber connecting at least one compressed gas inlet (2) to at least one intake chamber (3). The intermediate chamber and the at least one intake chamber (3) are separated by a wall arranged transversely to the axis (X, X) and connected by at least one orifice located in the transverse wall (8).

A portable safety device (100) for inflating multiple envelopes includes at least one inlet for surrounding air (1), at least one inflation system, at least one enriched air or gas zone, at least one nonreturn valve (2), at least one connector (3) connected to the at least one inflatable envelope (4). The device also includes at least one separation wall (8), which compartmentalizes at least the end of at the connector (3) opening into at least two substantially hermetically independent inflatable envelopes (4).

A portable safety device (100) for inflating multiple envelopes includes at least one inlet for surrounding air (1), at least one inflation system, at least one enriched air or gas zone, at least one nonreturn valve (2), at least one connector (3) connected to the at least one inflatable envelope (4). The device also includes at least one separation wall (8), which compartmentalizes at least the end of at the connector (3) opening into at least two substantially hermetically independent inflatable envelopes (4).

A hypothermia-prevention device is provided. The hypothermia-prevention device provides a three-port valve system having an inhalation port, a respiration port and an exhalation port, respectively wherein an in-take valve fluidly connects the inhale port to the respiration port and wherein an out-take valve fluidly connects the exhale port to the respiration port. The out-take and in-take valves are adapted to respond to the negative and positive pressure urged by way respiration of a user through the respiration port so that the exhale air is directed through the exhale port while colder inhale air is excluded through the exhalation port. The exhale port provides an out-tube for selectively directing the warmer exhale air to necessary body parts of the user.

A hypothermia-prevention device is provided. The hypothermia-prevention device provides a three-port valve system having an inhalation port, a respiration port and an exhalation port, respectively wherein an in-take valve fluidly connects the inhale port to the respiration port and wherein an out-take valve fluidly connects the exhale port to the respiration port. The out-take and in-take valves are adapted to respond to the negative and positive pressure urged by way respiration of a user through the respiration port so that the exhale air is directed through the exhale port while colder inhale air is excluded through the exhalation port. The exhale port provides an out-tube for selectively directing the warmer exhale air to necessary body parts of the user.

A rescue device with a hybrid foldable avalanche airbag, the airbag containing at least one outer gas compartment that surrounds at least one inner air compartment. The outer compartment constitutes a pneumatic support frame for the airbag connected via a discharge valve with at least one pressurized gas cartridge. The inner air compartment is provided with at least one check valve through which ambient air is drawn in. The folded airbag is placed in a pocket of a backpack or in a pouch provided with shoulder straps connected to a buckled belt forming thereby a vest.

A rescue device with a hybrid foldable avalanche airbag, the airbag containing at least one outer gas compartment that surrounds at least one inner air compartment. The outer compartment constitutes a pneumatic support frame for the airbag connected via a discharge valve with at least one pressurized gas cartridge. The inner air compartment is provided with at least one check valve through which ambient air is drawn in. The folded airbag is placed in a pocket of a backpack or in a pouch provided with shoulder straps connected to a buckled belt forming thereby a vest.

A backpack for carrying by a user includes a body, an inflatable balloon, a balloon inflation system, a balloon inflation system coupled to the body and to the inflatable balloon, an actuator operably coupled to the balloon inflation system, and a leg strap assembly. The body includes a support element and at least a first enclosure. The inflatable balloon is positioned within the enclosure. The leg strap assembly includes a leg strap fastener, a first leg strap having a first end coupled to the support element and a second end coupled to the leg strap fastener, and a second leg strap end having a first end coupled to the body and a second end releasably connectable to the leg strap fastener. The support element is coupled to the balloon such that, upon inflation of the balloon, tensile force is applied to the support element and to the leg strap assembly.