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4. 发明授权

US4889385A Chair seat-and-back support 失效
标题翻译：椅子座椅靠背支撑
公开(公告)号：US4889385A
公开(公告)日：1989-12-26
申请号：US165745
申请日：1988-03-09
申请人： Donald T. Chadwick , Peter R. Glass
发明人： Donald T. Chadwick , Peter R. Glass
IPC分类号： A47C1/032
CPC分类号： A47C3/026 , A47C7/441 , A47C7/445
摘要： A chair comprises an elongated one-piece seat-and-back support bent so as to form a lower substantially U-shaped seat support and an upper substantially upright back support. The seat support includes lower and upper leg portions and a bight portion intermediate the same. The bight portion is resilient thereby enabling the upper leg portion to deflect downwardly relative to the lower leg portion, and the back support to move downwardly and rearwardly, in response to a downward force exerted on the upper leg portion. In addition, the chair comprises a stabilizer mounted between the upper and lower leg portions of the seat support and for providing stability to the same during downward relative deflection of the upper leg portion. The chair further comprises resilient stiffening member and a tension control mechanism. The stiffening member is mounted to and between the seat support upper and lower leg portions and functions to increase resistance to relative deflection of the upper leg portion. The tension control mechanism is movably mounted relative to the lower leg portion of the seat support for adjustable engagement with the stiffening member to adjust the same's resistance to relative deflection of the seat support upper leg portion.
摘要翻译：椅子包括细长的一体式座椅和背部支撑件，其弯曲成形成下部大体上U形的座椅支撑件和上部基本上直立的后部支撑件。座椅支撑件包括下腿部分和上腿部分以及在其中间的弯曲部分。弯曲部分是弹性的，从而使得上腿部相对于小腿部分向下偏转，并且后支撑件响应于施加在上腿部分上的向下的力而向下和向后移动。此外，椅子包括安装在座椅支撑件的上部和下部腿部之间的稳定器，并且用于在上部腿部的向下相对偏转期间向其提供稳定性。椅子还包括弹性加强构件和张力控制机构。加强构件安装在座椅支撑件上部和下部腿部之间并且在座椅支撑件上部和下部腿部之间并且用于增加对上部腿部的相对偏转的抵抗力。张力控制机构相对于座椅支撑件的小腿部可移动地安装，用于与加强构件调节接合，以调节其相对于座椅支撑件腿部部分的相对偏转的阻力。

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