Pyrotechnic actuator of the variable-thrust-acting type
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United States of America Patent
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Nov 20, 2007
Grant Date -
Jan 27, 2005
app pub date -
Jun 14, 2004
filing date -
Jul 10, 2003
priority date (Note) -
Expired
status (Latency Note)
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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).
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