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:
May. 18, 1982
Filed:
Mar. 03, 1980
Applicant:
Inventors:
Tateo Muramatsu, Yokohama, JP;
Mamoru Kurihara, Tokyo, JP;
Assignee:
Bridgestone Tire Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02B / ;
U.S. Cl.
CPC ...
405115 ; 405 90 ;
Abstract
A collapsible rubber dam installation comprising a rubber dam built across a watercourse such as a river or the like and operative to be raised by supplying fluid such as air, water or the like. The dam is collapsed by discharging the fluid therein into atmosphere. A fluid supply and discharge conduit have one end connected to the inside of the rubber dam at a position which is higher than at least a level of drain collected therein and have the other end extending substantially upwardly with an ascending inclination.