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. 26, 1991
Filed:
Dec. 27, 1990
Applicant:
Inventors:
Masao Fujisawa, Chigasaki, JP;
Satoshi Tagomori, Yokohama, JP;
Mamoru Takasaki, Tokyo, JP;
Yoshihiro Sato, Yokohama, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02B / ;
U.S. Cl.
CPC ...
405115 ; 405 91 ;
Abstract
A collapsible sheet dam comprises a bag of flexible rubber sheet fixed onto a riverbed and riverbank portions of a river, and a fluid supply and discharge port formed in the bag. In such a dam, an end portion of the bag is fixed onto the riverbed and riverbank portions at upstream side and at the same time a portion of the bag located behind the fluid supply and discharge port is fixed onto the riverbank portion and a region ranging from the riverbank portion to the riverbed portion around the fluid supply and discharge port.