Chair device for person carrier
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United States of America Patent
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Aug 23, 2011
Grant Date -
Nov 25, 2010
app pub date -
May 20, 2009
filing date -
May 20, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A chair device for a person carrier includes a backrest unit formed by a front backrest and a rear backrest. The backrest unit is pivotally joined to a seat unit in which two opposite fan-shaped limit projecting members are provided at each pivot-joint end of the seat unit. The fan-shaped limit projecting members can be angularly displaced to a position to be engaged with fan-shaped recesses in the pivot-joint ends of the rear backrest. The fan-shaped limit projecting members have a position limited space for angular displacement within the fan-shaped recesses so that the backrest unit of the chair can move in the range between a collapsing state and an unfolding state. Furthermore, strength reinforcing edge ribs are provided at both sides where the front backrest is assembled to the rear backrest.
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Family
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