US Patent 7757314 Collapsible structure

A collapsible structure is movable between an expanded configuration and a collapsed configuration. The collapsible structure includes a plurality of collapsible scissor assemblies. Each scissor assembly includes a first frame member pivotally coupled to a second frame member at a first pivot point. Frame members of adjacent scissor assemblies are coupled to a first connector assembly or a second connector assembly. A support assembly is coupled to a first scissor assembly and includes a member pivotally coupled at a first end to the first connector assembly or the first frame member and slidably coupled at an opposing second end to the second frame member.