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.
Patent No.:
Date of Patent:
Apr. 07, 1992
Filed:
Oct. 10, 1989
Joe Masuyama, Tokyo, JP;
Koji Mikuriya, Tokyo, JP;
Tsuneo Takai, Tokyo, JP;
Shinji Chiba, Tokyo, JP;
Kiyoshi Hotta, Tokyo, JP;
Yoshinori Hamano, Tokyo, JP;
Katsuyuki Onishi, Tokyo, JP;
Koji Funahashi, Tokyo, JP;
Yuji Takahashi, Tokyo, JP;
Junichi Sugawara, Tokyo, JP;
Tobishima Corporation, Tokyo, JP;
Abstract
A domed structure having a retractable roof comprises a field area obtained by digging out a hollow, substantially concave in section, in the ground and levelling the bottom of the hollow seats for the spectators are provided by extending an upward slope outwardly from the end of the field area in an endless manner, and a movable roof element is movably mounted on a rail element laid out on the ground adjacent to the peripheral edge of said hollow. The movable roof element includes a driving arrangement to be placed on the rail element. The rail element may be tilted with a gradient rising toward the direction of solar radiation.