Patent ID: 9114862
Filing Date: 2015-08-25
Classification: B63B

Abstract:
1. An inflatable board capable of floating in water, comprising: a drop-stitch core having a top substrate with an inner top substrate surface and an outer top substrate surface, and a bottom substrate with an inner bottom substrate surface and an outer bottom substrate surface, the inner top substrate surface joined to the inner bottom substrate surface by a plurality of threads, wherein the top substrate surface forms a substantially planar top surface held by the plurality of threads at a fixed distance from the bottom substrate surface which forms a substantially planar bottom surface when the board is inflated, wherein the core has a length and a width, wherein the core length is longer than the core width, and wherein the top substrate surface has a top substrate periphery and the bottom substrate surface has a bottom substrate periphery, an edge material joining the top and bottom substrate peripheries to form a rail, wherein the rail forms a top rail curve at the top substrate periphery and a bottom rail curve at the bottom substrate periphery, and a stiffening layer, formed of an inelastic film, disposed over at least one of the substantially planar top surface or substantially planar bottom surface, wherein the stiffening layer has a layer length smaller than the core length and a layer width smaller than the core width, wherein the layer length and width form a layer periphery, and wherein the layer periphery does not extend beyond the substantially planar top or bottom surfaces to the top or bottom rail curves.