Abstract: The invention relates to a device for controlling the opening of the hood (1) of the engine compartment of a vehicle, connected to the vehicle body in a hinged manner for enabling it to partially open by rotating around the rear hinge toward the front of the vehicle from a position in which the hood (1) is latched to the vehicle body by means of at least one hook (18). This device comprises an impact detector mounted at the front of the vehicle and interacting with an actuator (19, 21) for controlling the unlatching of said hook (18) and comprises means for guiding the opening of the hood (1), these means for guiding the opening of the hood (1) comprising means for guiding the rear edge (1a) of the hood (1) in an essentially vertical direction.

Abstract: The triggered stroke actuator comprises a cylinder (12) housing a movable assembly constituted by a piston (13), a rod (16) projecting from one end of the cylinder (12), and a slidable element (17) that is movable inside the cylinder (12). The actuator also includes means for propelling the piston (13) in response to a trigger command, and a return braking arrangement. The return braking arrangement is constituted by at least one ball (18) housed in an annular cavity (19) defined by the inside surface of the cylinder (12) and by the slidable element (17), a return spring (22) connecting the slidable element (17) to the piston (13), and a link element (23) connecting the ball (18) to the piston (13). The ball (18) is positioned by the link element (23) in a first segment (20) of the annular cavity (19) when the return spring (22) is relaxed, and in a second segment (21) of decreasing radial extent when the return spring (22) is compressed.

Abstract: The technical field of the invention is that of pyrotechnic actuators including a piston and having the essential function of exerting thrust to move an object by causing the piston to emerge. The invention relates more particularly to a pyrotechnic gas generator (2), a combustion chamber (3), a piston (10) capable of moving in a slide chamber (4) under the effect of said gas, the two chambers (3, 4) being in communication with each other. The main characteristic of this actuator is that it comprises a shutter device (5) implemented after said actuator (1) has been triggered to interrupt the communication between said chambers (3, 4), said shutter device (5) being included in the slide chamber (4).

Abstract: The invention relates to a safety device for raising the bonnet of a motor vehicle in the event of a collision with a pedestrian. The safety device includes a pyrotechnic actuator provided with a thrust piston secured to a mechanism for raising the bonnet and able to deploy the said mechanism which is itself secured to the said bonnet, and a blocking device intended to block the said actuator in a given position. The main characteristic of this device is that it is made up of a shock-absorbing device employed when a pedestrian hits the bonnet which has been raised, so that the assembly consisting of the bonnet, the raising mechanism and the piston can move under the effect of the impact while at the same time being retarded.

Abstract: The invention relates to a constant force pyrotechnic actuator comprising a pyrotechnic gas generator, a body, a piston capable of moving in the said body under the effect of the gases emitted by the generator, and a pressure regulator member situated inside the piston, the said piston having a front face traversed by a duct making it possible to place in communication the space separating the gas generator and the said piston, and an inner space in which the regulator member is housed. Within said actuator, the piston is extended by a hollow push rod terminating in an enlarged head, the said head having gas discharge ducts, and the inner space of the said rod is in communication with the inner space of the piston in which the regulator member is housed.

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 invention relates to a device for controlling the opening of the hood (1) of the engine compartment of a vehicle, connected to the vehicle body in a hinged manner for enabling it to partially open by rotating around the rear hinge toward the front of the vehicle from a position in which the hood (1) is latched to the vehicle body by means of at least one hook (18). This device comprises an impact detector mounted at the front of the vehicle and interacting with an actuator (19, 21) for controlling the unlatching of said hook (18) and comprises means for guiding the opening of the hood (1), these means for guiding the opening of the hood (1) comprising means for guiding the rear edge (1a) of the hood (1) in an essentially vertical direction.

Abstract: The technical field of the invention is that of pyrotechnic actuators including a piston and having the essential function of exerting thrust to move an object by causing the piston to emerge. The invention relates more particularly to a pyrotechnic gas generator (2), a combustion chamber (3), a piston (10) capable of moving in a slide chamber (4) under the effect of said gas, the two chambers (3, 4) being in communication with each other. The main characteristic of this actuator is that it comprises a shutter device (5) implemented after said actuator (1) has been triggered to interrupt the communication between said chambers (3, 4), said shutter device (5) being included in the slide chamber (4).

Abstract: The technical field of the invention is that of pyrotechnic actuators comprising a piston, the basic function of which is to exert a thrust so as to displace an object by shooting out the piston. More particularly, the invention relates to a pyrotechnic actuator (1, 1a, 1b, 1c) comprising a pyrotechnic-gas generator (7), a combustion chamber (3) and a piston (9) which can move in a slide chamber (5) under the effect of the said gases. The principal characteristic of this actuator is that it comprises a shut-off device (4, 4a, 4b, 4c) used after the triggering of the said actuator (1, 1a, 1b, 1c) in order, on the one hand, to close the slide chamber (5) and, on the other hand, to secure the depressurization of the combustion chamber (3).

Abstract: This set of equipment for a motor vehicle includes an inflatable structure, an element acting as a support for the inflatable structure, an element forming a load-spreading plate and at least one frangible member for fixing the load-spreading plate to the support. The set includes a sheath, an open first end which is fixed to the support and an open second end which is fixed to the load-spreading plate to form the inflatable structure. The frangible member includes a thin web, a peripheral region which is fixed to a first element, either the load-spreading plate or the support, and a central region which is fixed to the other of these elements.

Abstract: The invention relates to a constant force pyrotechnic actuator comprising a pyrotechnic gas generator, a body, a piston capable of moving in the said body under the effect of the gases emitted by the generator, and a pressure regulator member situated inside the piston, the said piston having a front face traversed by a duct making it possible to place in communication the space separating the gas generator and the said piston, and an inner space in which the regulator member is housed.

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: Disclosed is a method and apparatus for continuously casting a metal strip. A casting pool of molten metal is formed, and a metal strip is solidified onto a casting surface. The temperature of the casting surface is maintained above a predetermined critical value. By maintaining the surface temperature above the predetermined critical value, either the heat transfer uniformity or the heat transfer capacity or both are improved.

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 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: The technical field of the invention is that of pyrotechnic actuators comprising a piston, the basic function of which is to exert a thrust so as to displace an object by shooting out the piston. More particularly, the invention relates to a pyrotechnic actuator (1, 1a, 1b, 1c) comprising a pyrotechnic-gas generator (7), a combustion chamber (3) and a piston (9) which can move in a slide chamber (5) under the effect of the said gases. The principal characteristic of this actuator is that it comprises a shut-off device (4, 4a, 4b, 4c) used after the triggering of the said actuator (1, 1a, 1b, 1c) in order, on the one hand, to close the slide chamber (5) and, on the other hand, to secure the depressurization of the combustion chamber (3).

Abstract: The technical field of the invention is that of motor vehicle safety. The invention relates more particularly to a damping device (1) for damping the displacement of at least one part set in motion during a mechanical 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 said device (1) comprising a pyrotechnic actuator (22) that is able to displace a piston (9) and being characterized in that it includes a wire (21) having one end connected to a fixed portion (27) of the vehicle, the said actuator (22), which is secured to the said part to be damped, interacting with the said wire (21) in order to retard and then stop the part.