Four-way lumbar support
作者： James T. Ligon , Stephen P. Porter
DOI:
关键词:
摘要: An adjustable lumbar support mechanism (10) includes a flexible member (18), device (20) for longitudinally subtending the member, an apex shift linkage (54), and loading engaging linkage. The has oppositely disposed first second longitudinal ends. is between end causes to arch outwardly define user's back. link (56) (58). pivotably connected proximate end. on thereof at point of link. also hinge wherein obtuse angle there between. engages one load applying in direction toward tends
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