Seat belt device
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United States of America Patent
Stats
-
Mar 10, 2009
Grant Date -
Sep 26, 2002
app pub date -
Mar 19, 2002
filing date -
Mar 22, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A seat belt device has a gas generator for generating a high pressure gas when the vehicle is in emergency, a cylinder for conducting the high pressure gas from the gas generator, a piston received movably within the cylinder and pressed and moved by the high pressure gas, and a drive unit for rotating a winding shaft of a seat belt retractor in a direction of removing the slack of a belt, using the movement of the piston, wherein the pretensioner is employed with the energy absorbing mechanism, for reversely rotating the winding shaft if a tension acting on the belt exceeds a predetermined value after removing the slack of the belt.
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Family
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