Seat-belt pretensioner arrangement
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United States of America Patent
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Jan 5, 2010
Grant Date -
Jan 31, 2008
app pub date -
Oct 5, 2007
filing date -
Apr 7, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A seat-belt pretensioner arrangement comprises a pretensioner (7) and a control system (3-6) to control the tension applied to a seat-belt by the pretensioner (7). The control system (3-6) controls the pretensioner (7) in response to at least the rate of change of steering angle (.delta.'). A first processor (4) provides an output indicating a desired level of force to be applied to the seat-belt determined from the steering angle and the velocity of the vehicle. A second processor (5) provides a corresponding output indicative of a desired force level, determined from the rate of change of steering angle (.delta.') and the velocity of the vehicle (v.sub.x). A selector (6) selects the highest of the two force levels, and provides an appropriate signal to the pretensioner (7).
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