Vehicle seat
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United States of America Patent
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Apr 19, 2011
Grant Date -
Apr 30, 2009
app pub date -
Oct 27, 2008
filing date -
Oct 31, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A seat back has a seat back frame, a plane spring structure, and a headrest provided at the upper end of a seat back frame. The plane spring structure has left and right side wires, and horizontal wires extending in the horizontal direction. Connection wires are provided between the seat back frame and plane spring structure. First end portions and second end portions of the connection wires function as detachable portions. At least one of these detachable portions is detached from the seat back frame or plane spring structure by the load applied to the seat back, when a vehicle is bumped from behind.
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Family
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