Collapsible flotation device

摘要

A collapsible flotation device has an uncollapsed configuration and a collapsed configuration. The device includes a spring which is forced to coil in upon itself by folding to achieve the collapsed configuration of the device and which is biased towards the uncoiled configuration. The spring is located along the perimeter of the device in a pocket formed along the perimeter of a panel of flexible material or on the external perimeter of the device. Also located within the pocket are one or more inflation chambers which are inflated to provide buoyancy. Additional or alternate pockets which include inflatable chambers may be located in the central portion of the flexible panel.