Shear-based inertia igniters with preset no-fire protection for munitions and the like
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United States of America Patent
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Oct 29, 2019
Grant Date -
Sep 27, 2018
app pub date -
Mar 24, 2018
filing date -
Mar 26, 2017
priority date (Note) -
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Abstract
An inertial igniter for igniting a thermal battery upon a predetermined acceleration event. The inertial igniter including: a base having a first projection; a striker mass rotatably connected to the base through a rotatable connection, the base having a second projection aligned with the first projection such that when the striker mass is rotated towards the base, the first projection impacts the second projection; a rotation prevention mechanism for preventing impact of the first and second projections unless the predetermined acceleration event is experienced; and a spring for biasing the striker mass in a biasing direction away from the base, the spring being disposed between a portion of the striker mass and a portion of the rotation prevention mechanism.
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