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. 28, 1996
Filed:
Sep. 29, 1993
Applicant:
Inventors:
Joseph J Kalwara, Indianapolis, IN (US);
Daniel L Barksdale, Brownsburg, IN (US);
James L Hoff, Brownsburg, IN (US);
Assignee:
Bridgestone/Firestone, Inc., Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156157 ; 156 71 ; 156281 ;
Abstract
A process for preparing a lap seam for roofing comprising applying a butyl rubber-containing primer with a mesh pad to the EPDM membrane surfaces to be joined, the primer having an elastomeric solids content of from about 15-20 percent, by weight. Thereafter positioning a splice tape between the primed surfaces to form a seam structure and applying pressure to the structure thus provided to form an adhesively-held lap seam characterized by being water tight and having superior peel strength.