Patent ID: 8590830
Filing Date: 2013-11-26
Classification: B64B

Abstract:
1. A pressure tight large-scaled membrane structure comprising: a bag body formed from having a plurality of gores; a plurality of first ropes; and a plurality of second ropes, wherein each of the plurality of the gores comprises a middle gore portion and upper and lower gore portions arranged at top and bottom ends of the middle gore portion; the bag body before inflation comprises: the upper and lower bag body portions comprises shapes obtained by dividing a shape according to a relational expression of Euler's Elastica at an equator having a maximum radius thereof; each of the plurality of the first ropes is disposed to the bag body so as to be orthogonal to meridians of the bag body; and each of the plurality of the second ropes is disposed along one of the meridians from a zenith to a nadir of the bag body.