发明名称 |
Back construction for seating unit |
摘要 |
A chair includes a base having a control assembly operably supporting a seat assembly and also a back assembly for movement about a seat tilt axis and a back tilt axis, respectively. The back assembly includes a flexible sheet supported at upper/outer corners by a back support structure and hanging downwardly. The flexible sheet includes a lower portion coupled to the back support structure by a tensioner for holding the lower portion rearwardly. A vertically-adjustable lumbar mechanism is adjustably supported on the back support structure and operably engages the flexible sheet for flexing a lumbar area of the flexible sheet forwardly to provide an optimal ergonomic horizontal and vertical convex shape for postural lumbar support. |
申请公布号 |
US7740315(B2) |
申请公布日期 |
2010.06.22 |
申请号 |
US20040004300 |
申请日期 |
2004.12.03 |
申请人 |
STEELCASE INC. |
发明人 |
BALL DOUGLAS C.;GOLDICK LEON;DESLAURIERS ALAIN;SOKALSKI JEFF G. |
分类号 |
A47C3/00;A47C1/032;A47C7/46 |
主分类号 |
A47C3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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