Invention Grant
US09119459B2 Variable suspension system for backpacks 有权
背包可变悬挂系统

Variable suspension system for backpacks
Abstract:
An adjustable suspension system for a backpack includes a flexible frame, a trampoline and a tension adjustment mechanism. The suspension system can allow the user to control the position of the frame anywhere between a flat position directly adjacent to the user's back and a fully bowed position that arches away from the user's back.
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