The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 26, 2013

Filed:

Jul. 09, 2009
Applicants:

Naoki Izutsu, Sagamihara, JP;

Kiyoho Matsushima, Shinagawa-ku, JP;

Inventors:

Naoki Izutsu, Sagamihara, JP;

Kiyoho Matsushima, Shinagawa-ku, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64B 1/40 (2006.01); B64B 1/58 (2006.01);
U.S. Cl.
CPC ...
Abstract

A pressure tight large-scaled membrane structure includes a bag body having a plurality of gores attached to each other along an attachment line, and a plurality of first ropes attached over a predetermined range of the bag body in such a manner as to be orthogonal to the attachment line of the gores, whereby a cylindrical shaped portion is formed. The cylindrical shaped portion has a substantially circular cross-sectional area that is a maximum substantially circular cross-section of the bag body and the plurality of first ropes each having approximately the same length as a circumference of the substantially circular-cross section having a maximum area with respect to the bag body.


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