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    • 2. 发明申请
    • BACKREST
    • US20120062014A1
    • 2012-03-15
    • US13228696
    • 2011-09-09
    • Brock WalkerJohn C. GroelsmaJohn F. Aldrich
    • Brock WalkerJohn C. GroelsmaJohn F. Aldrich
    • A47C7/40A47C7/02
    • A47C7/42
    • A backrest includes a shell having a first, forwardly facing support surface being more pronounced along upper and lower portions of a central, spine region relative to a middle portion of the central spine region and relative to side regions adjacent the central, spine region. A cushion is disposed over the first support surface. In one aspect, the cushion has a second, forwardly facing support surface being free of any corresponding pronounced portions overlying the pronounced upper and lower portions of the central, spine region of the underlying shell. In another aspect, a chair includes a backrest as disclosed. Methods of use and assembly also are provided.
    • 靠背包括具有第一面向前的支撑表面的壳体,其相对于中心脊部区域的中间部分并且相对于邻近中央脊柱区域的侧部区域,在中心脊柱区域的上部和下部更显着。 缓冲垫设置在第一支撑表面上。 在一个方面,所述衬垫具有第二面向前的支撑表面,所述第二面向前的支撑表面没有覆盖所述下面壳体的所述中心脊柱区域的明显上部和下部的任何相应的明显部分。 在另一方面,椅子包括如所公开的靠背。 还提供了使用和组装的方法。