FOLDING PRODUCT WITH ARCHED STRUCTURE Russian patent published in 2014 - IPC E04H15/40 

FIELD: construction.

SUBSTANCE: arched structure, at least, comprises one loop and is rigidly connected with the flexible envelope. Auxiliary facilities for folding are provided. They are comprised of, at least, a gripping member coupled to the first command point of loop, or envelope along the loop, intended for supplying the first command point by pulling to the first target point of loop or envelope along the loop to form, at least, two subloops by means of twisting of loop. The first target and command points satisfy the following general conditions: a - distance measured along the loop between the first command point and first target point is greater or equal to 2·π·R_rupt, where R_rupt - limiting radius of curvature of the loop, b - when the loop has substantially non-planar shape, at least with large major axis and with at least small main axis, pair {first command point; first target point} is not on a large main axis nor on small main axis, c - when the loop has substantially the flat and elongated shape with at least large main axis, pair {first command point; first target point} is not on the large main axis.

EFFECT: invention makes it possible to simplify the process of folding the product and reduce the time spent on it.

17 cl, 16 dwg