Abstract: The present invention relates to a safety device for lifting a bonnet (1) of a motor vehicle in the event of a collision, this device being situated under the said bonnet (1) and comprising a mechanism (2) for lifting the said bonnet (1) and a gas generator (31), the said bonnet (1) comprising a structure allowing it, in normal operation, to be opened or closed about an axis (10) known as the rotation axis. This device is characterized in that it comprises an actuator (3) comprising mechanical means actuated using the said gas generator (31) and able to deploy the said lifting mechanism (2).

Abstract: The technical field of the invention is that of devices for connecting and separating objects such as microsatellites with respect to a structure. More specifically, the invention relates to a separation device (1) intended to release a screw (8) which holds two subassemblies of a structure together, this release taking place through the movement of a release ring (5) by virtue of the gases produced by a gas generator (3). The main feature of the separation device (1) according to the invention is that a damping device, achieved by pressurizing a space (19) with the gases emitted by the generator (3), is created in order to decelerate then halt the release ring (5) before it can produce a mechanical shock at the end of its travel.

Abstract: The present invention relates to electrical contactors used in electric motors comprising batteries. The present invention relates more specifically to an electrical contactor (1) for a battery, consisting of a hollow body (2) defining an upstream part (11) in which a pyrotechnic initiation device (3) is located and a downstream part in which a piston (4) is housed. Since the downstream part has three conducting studs (5, 6, 7), the main characteristic of the contactor (1) according to the invention is that it makes it possible, when the piston (4) moves due to the effect of the combustion gases, to pass instantaneously from a position corresponding to the electrical connection of the first two studs (5, 6) to a position corresponding to the electrical connection of the second stud (6) to the third stud (7).

Abstract: The technical field of the invention is that of devices for connecting and separating objects such as microsatellites with respect to a structure.