초록 ▼

A roof formed from a self-supporting inflatable structure including a polyhedron frame made from tension cables interconnected and joining at nodes and an envelope surrounding the frame. Anchoring skirts extend from each node line to predetermined lines on the panels forming the envelope. The polyhe

A roof formed from a self-supporting inflatable structure including a polyhedron frame made from tension cables interconnected and joining at nodes and an envelope surrounding the frame. Anchoring skirts extend from each node line to predetermined lines on the panels forming the envelope. The polyhedron frame is such size as to provide an arch shaped roof covering an area to be covered, and when the envelope is inflated, and sufficient internal air pressure is therein maintained, all of the tension cables are under tension and the overall structure becomes rigid, stable and capable of resisting deformation caused by external forces applied to it.

대표청구항 ▼

An inflatable double wall pneumatic structure including a polyhedron cable frame assembly, said frame comprising a pair of grids in spaced apart respective planes, each grid being made up of first cable tension elements extending in one direction and second intersecting cable members extending in a

An inflatable double wall pneumatic structure including a polyhedron cable frame assembly, said frame comprising a pair of grids in spaced apart respective planes, each grid being made up of first cable tension elements extending in one direction and second intersecting cable members extending in a direction transverse to the direction of the first cable members to form quadrilateral patterns, each first cable element connected to intersecting second cable tension elements at nodes in the plane of each said grid; third cable tension elements extending between the planes of the respective grids and connected to corresponding nodes in the said grids; the grids defining upper and lower surfaces of said cable frame, and an air impervious flexible closed envelope totally enclosing said cable frame, said envelope including top and bottom panels including spaced-apart anchor means connected to corresponding nodes on the grids in the respective planes of the cable frame such that when the envelope is inflated and subject to pneumatic pressure, the first, second and third tension elements forming said cable frame will be under tension causing the cable frame to assume its intended shape.