Multi-stage mechanical delay mechanisms for inertial igniters for thermal batteries and the like
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United States of America Patent
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Sep 15, 2009
Grant Date -
Feb 21, 2008
app pub date -
Aug 2, 2007
filing date -
Aug 2, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An inertia igniter including a mechanical delay mechanism having two or more members which are movable under different acceleration conditions to sequentially move a movable member upon sequential movement of the two or more members and an ignition member actuatable by the movable member such that movement of the movable member by the two or more members ignites the ignition member. The movable member can be movable by one of translation and rotation. The inertia igniter can further comprise an impact mass releasably movable in the housing, wherein the impact mass is released and movable by movement of the movable member to impact the ignition member. The inertia igniter can also further comprise a stop member for preventing movement of the impact mass until the movable member has moved a predetermined distance.
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