Patent ID: 9114866
Filing Date: 2015-08-25
Classification: B64B

Abstract:
1. A balloon envelope comprising: a plurality of gores, wherein each gore has a hexagonal shape with (i) two elongated edges and (ii) two vertices, each of said gores having a top and a bottom; wherein each of said gores is positioned vertically such that the respective vertices of each gore are located at the top and the bottom of the gore, and wherein said gores are sealed together at adjacent edges to form cylindrical envelope portion, wherein the tops and bottoms of said gores are sealed together at adjacent edges and form hemispheric approximation by triangles, and wherein the tops of the gores form a top hemisphere and the bottoms of the gores form a bottom hemisphere, with the cylindrical portion in between the top hemisphere and the bottom hemisphere, when the balloon envelope is inflated to an operational pressure level that is above an ambient pressure level.