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. 18, 1986
Filed:
Dec. 18, 1984
Applicant:
Inventors:
David A Black, Islington, Ontario, CA;
John J Deans, Milton, Ontario, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04F / ; E01C / ;
U.S. Cl.
CPC ...
52-2 ; 52396 ; 52573 ; 404 64 ; 404 65 ;
Abstract
A waterstop for concrete structures, of the type consisting of an extruded strip of elastomeric material having a general flat medial portion extending between longitudinally ribbed side wing anchor portions is internally pressurized so as to compensate for dimensional changes of the concrete joint.