Variable surfaces supported by rods, e.g. for forming tents, pavilions etc., has flexible surfaces stretching from cross points to the ends of rods, hence forming the roof

摘要

The flexible surfaces (2) stretch from the cross points to the ends of the rods (1,1') on the other side of the crossing (25). This forms a roof and the rod sections at the other side of the crossing remain free, fixed or curved.