Patent ID: 6588702
Filing Date: 2003-07-08
Classification: B01D,B63H

Abstract:
A lighter-than-air device operable to float above a reference surface, said lighter-than-air device comprising:a buoyant element containing an amount of lighter-than-air gas; and a flexible surface having a length and height forming a usable area, said flexible surface having a top edge connected directly to said buoyant element and a bottom edge that is not connected to said buoyant element, wherein said usable area of said flexible surface is bounded above by said buoyant element and bounded below by one of said bottom edge of said flexible surface and the reference surface, wherein said amount of lighter-than-air-gas is sufficient to lift said buoyant element and a portion of said flexible surface above the reference surface, wherein said flexible surface comprises multiple segments, and wherein said multiple segments comprise a first segment of a first material and a second segment of a second material.