Patent ID: 6913803

Claim:
A one-way valve for an inflatable member having a width and a length defined by overlying first and second film layers, the first and second film layers sealed relative to one another around a perimeter of the inflatable member, the one-way valve comprising: a third film layer scaled relative to the first film layer by a plurality of seals that define a serpentine flow path having first, second, third, and fourth interconnected flow path segments between the first and third film layers, the serpentine flow path generally traveling from one side of the inflatable member to the other side of the inflatable member, wherein opposing surfaces of the first and third film layers at a first end of the serpentine flow path are unconnected to define an inlet for an inflation medium between the first and third film layers, the inlet being adjacent to the perimeter seal of the inflatable member, and wherein the first and third film layers at a second end of the serpentine flow path are configured to define an outlet in communication with the interior of the inflatable member, the second end of the serpentine flow path being spaced from the perimeter seal of the inflatable member.