Abstract: The subject of the present invention is a device (50) for propelling a liquid (L) comprising a reservoir (51) equipped with a mobile separation member (57) and a pyrotechnic gas generator (1), which is arranged inside said reservoir (51), equipped with nozzles (4a, 4b, 4a?, 4b?). Characteristically, said nozzles (4a, 4b, 4a?, 4b?) of said gas generator (1) are arranged radially on the wall(s) of said body (2) and said gas generator (1), arranged in such a way that its axis corresponds to the line of travel of said mobile separation member (57), is equipped with a deflector (8) to deflect said generated combustion gases (G) along said line of travel of said mobile separation member (57).

Abstract: The technical field of the invention is that of devices used in the field of motor vehicle safety to protect a pedestrian in the event of a head-on impact between the said pedestrian and a motor vehicle. More precisely, the invention relates to a safety device (1,100) for lifting the bonnet (29,129) of a motor vehicle in the event of a collision, comprising a mechanism (3,103) for lifting the said bonnet (29,129), an actuator (16,116) fitted with a pyrotechnic gas generator and a member for latching the said lift mechanism (3,103). The main feature of this device is that the latching member consists of a hook (4,104) mounted pivotingly and fixedly attached to the said motor vehicle, the said actuator (16,116) inducing an action on the said hook (4,104) to unlatch the lift mechanism (3,103).

Abstract: A damping device used for motor vehicle safety, for damping the displacement of at least one part set in motion during a collision between a motor vehicle and an external object, the part being, for example, a bumper, a steering column or a bonnet of a motor vehicle, the device comprising an actuator that is able to displace a piston and is characterized in that it includes a wire having one end connected to a fixed portion of the vehicle, the actuator, which is secured to the part to be damped, interacting with the wire in order to retard and then stop the part.

Abstract: The technical field of the invention is that of the devices used in the field of automotive safety to protect a pedestrian in the event of a frontal impact between the said pedestrian and a motor vehicle. More specifically, the invention relates to a safety device (1, 101, 201) for raising the bonnet (11, 111, 211) of a motor vehicle in the event of a collision with a pedestrian, comprising a pyrotechnic actuator (2, 102, 202, 302) provided with a thrust piston (17, 117) secured to a mechanism for raising the bonnet (11, 111, 211) and able to deploy the said mechanism which is itself secured to the said bonnet (11, 111, 211), and a blocking device intended to block the said actuator (2, 102, 202, 302) in a given position.

Abstract: The technical field of the invention is that of motor vehicle safety involving energy absorption systems for damping the displacement of certain parts that are put into motion at the time of a mechanical collision between the motor vehicle and an externals object. The subject of the present invention relates to an energy absorption system for safety devices in a motor vehicle, comprising a pyrotechnic gas generator and a sliding position that can be displaced in a damping chamber, the said generator being able to release gas into the said chamber in order to damp the piston. The main characteristic of this system is that the gas generator delivers a variable quantity of gas and the damping chamber comprises a pressure-regulating device that is triggered above a threshold pressure.

Abstract: A safety device for lifting a bonnet of a motor vehicle in the event of a collision, the device being situated under the bonnet. The device includes a mechanism for lifting the bonnet, and a gas generator. The bonnet includes a structure allowing the bonnet in normal operation, to be opened or closed about a rotation axis. The device also includes an actuator with a mechanical means actuated using the gas generator and able to deploy the lifting mechanism.

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).