Retractor Mounted Belt Tension Sensor
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United States of America Patent
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Issued Date -
Jan 30, 2014
app pub date -
Jul 27, 2012
filing date -
Jul 27, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A seat belt retractor for providing extraction and retraction of seat belt webbing incorporating a belt tension sensing mechanism. The sensing mechanism includes a webbing guide which is moveable between positions and is biased toward a low tension position by a restoring spring force. The belt webbing is routed to deflected path through the web guide. Increasing tension on the webbing will cause the web guide to change its position as the webbing path straightens. The position of the web guide is detected through an electrical switch to provide a measure of webbing tension.
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