Back support mechanism and method
作者： Petrus A. M. Spierings
DOI:
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摘要: A plastic back support plate, formed of a firm but bendable material is connected to two side plates by curved integral hinges along opposite edges the plate that engages user. When deflected, these cause be degree depending upon angular deflection plates. The are secured in desired position an adjustable strap extending between outer To enhance portability, mechanism plurality linear parallel segments together hinges. These straight spaced and extend from edge across entire mechanism. undeflected, is, lie plane can folded into roll, about axis with hinges, roll comparable size small folding umbrella.
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