Actuator and vehicle protection system
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United States of America Patent
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Feb 14, 2017
Grant Date -
May 14, 2015
app pub date -
May 28, 2013
filing date -
May 31, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An actuator, especially for a vehicle protection system, comprises at least one wire (14) variable in shape depending on temperature made from a shape memory alloy and an elongate pyrotechnical element (12) connected to the shape-variable wire (14) so that upon ignition of the pyrotechnical element (12) the wire (14) is heated and experiences a change of length. The vehicle protection system is, for example, an airbag system comprising an airbag and a regulating mechanism for the internal airbag pressure, wherein the wire (14) of the actuator (10) is connected to the regulating mechanism so that a change of shape of the wire (14) exerts a force on the regulating mechanism.
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