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. 10, 2001
Filed:
Jan. 08, 1999
Tateo Muramatsu, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A flexible film, of which a flexible film weir is composed, has a two-dimensional configuration when expanded, and the total length of the periphery of the flexible film is set longer than the mounting length of mounting faces (a river bed and faces of slopes). Weights are attached on the flexible film at appropriate intervals. Portions left redundant when the flexible film is mounted on the mounting faces are folded and fixed at toes of the slopes in such a way that they are overlapped. The two-dimensional configuration of the flexible film simplifies the structure. Further, as the weights prevents the weir from floating up, there is no need for forming irregularities on the river bed, thereby simplifying the construction.