Abstract: A method for emergency landing of a vehicle, such as a helicopter or like, is described. The vehicle has at least one airbag provided with a respective opening valve for allowing the outflow of the gas therein contained. The airbag is suitable to cushion the impact of the vehicle with ground, and is inflated for an emergency landing. The method checks the conditions for the emergency landing of the vehicle, detects the maximum or impact speed of the vehicle, and opens the opening valve after the detection of an activation speed of the vehicle, so as to deflate the airbag. A system for controlling airbags of a vehicle, such as a helicopter or like, is also described.

Abstract: The present invention relates to a filtering device for NBC weapons, comprising a hermetically sealed box structure (10), provided with an opening for the inlet of air and/or gas to be filtered and an opening for the outlet of filtered air and/or gas, and within which one or more plates (11) are arranged to define the walls of a course for said air and/or gas from said inlet and said outlet, the sides of the plates (11) facing said course supporting a layer (12) of an adsorbing material.

Abstract: The present invention relates to an improved valve (1) for a container (2), preferably a cylinder containing high pressure gas, comprising a body (3, 4), provided on a orifice of said container (2), said body (3, 4) providing a cavity wherein means (12, 14) are provided for actuating a shutter (11) suitable to close said container (2) orifice, said valve (1) being characterised in that said activation means (12, 14) comprise means (16) made up of shape memory alloy; and in that it comprises means for modifying temperature of said activation means (16), so as to permit change of state of said alloy from martensitic state into austenitic state and vice versa, said activation means (16) thus varying their shape causing translation of said shutter (11) and thus opening of said valve by said activation means (12, 14).

Abstract: A protective garment in the form of a suit comprising gloves, boots, hood and facial mask. The suit is provided on its back region with a vertically extending slit which can be tightly closed by a zipper. Inside the garment, two protective skirts are respectively fastened along opposite portions of the slit; these are mutually connected by auxiliary protective portions situated at the opposite ends of the slit. The protective skirts are provided with respective gripping handles adapted to bring them, together with the auxiliary portions, from a rest position in which they are enclosed within the garment, to an operative position in which they are reversed astride the corresponding edges of the slit.

Abstract: A commutator feeding device for a demand valve, comprising a transducer adapted for controlling the movement of a shutter element for feeding predetermined quantities of air into a chamber of said demand valve in response to a pressure variation taking place inside said chamber, said transducer being activated following the shifting of a deformable membrane. The device comprises a spring, disposed inside a small piston, adapted for resting on said membrane, said small piston being provided with radial stakes or spokes, each one of which is adapted to rest on the active surface of a corresponding helicoidal profile cam, with manually operable actuating means being predisposed for controlling the rotation of said small piston around its own axis, and hence the axial shifting of the small piston itself in the spring-compressing sense.