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:
Nov. 05, 1991
Filed:
Nov. 24, 1989
Takenori Kumagai, Tokyo, JP;
Shimizu Construction Co., Ltd., Tokyo, JP;
Abstract
In an openable roof capable of opening and closing a central space having a certain point, a stationary roof section is arranged in spaced relation to the certain point of the central space. The stationary roof section has an inner periphery which defines the central space. A movable roof section is arranged on the stationary roof section and is radially movable relatively thereto toward and away from the certain point of the central space. The movable roof section is divided into a plurality of movable roof units having their respective apexes which are substantially identical in central angle with each other. In a closed position where the central space is closed by the movable roof section, the apexes of the respective movable roof units are abutted against each other and the movable roof units cooperate with each other to close the central space. In an open position where the central space is open, the movable roof units are spaced from each other and are spaced from the certain point of the central space to open the latter. A drive unit is provided for drivingly moving the movable roof units between the open and closed positions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile