Damped-action pyrotechnic actuator
AssigneeThomson-Brandt Armements
InventorsJean-Pierre Frehaut, Daniel Wisshaupt
Life of this patent
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Abstract
The invention that relates to a pyrotechnic actuator in which the movement of the piston is damped. The actuator includes a body, a piston, a pyrotechnic material combustion chamber and a counter pressure chamber. The actuator also includes at least one intermediate compression chamber located between the combustion chamber and the end of the piston, with the intermediate compression chamber connected to the combustion chamber by a hole.
Claims12
A pyrotechnic actuator having a body containing a piston, a pyrotechnic material combustion chamber, and a counter pressure chamber between a piston head and a mobile end of the actuator, also including an intermediate compression chamber between the combustion chamber and the piston head, the intermediate compression chamber being connected to the combustion chamber by a hole, and a gas passage by-passing the piston head of the piston to connect the intermediate chamber to the counter pressure chamber.
A pyrotechnic actuator comprising:
- a body containing a piston assembly;
- a pyrotechnic material combustion chamber;
- a counter pressure chamber located between the piston assembly and an end of the actuator;
- and
- an intermediate compression chamber between the combustion chamber and the counter pressure chamber, the intermediate compression chamber connected to the combustion chamber by a hole;
- wherein said body has a stepped configuration such that at least one of said counter pressure chamber and said intermediate compression chamber has a diameter smaller than a diameter of said combustion chamber.
Dependencies are inferred from the claim text.