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:
Jun. 16, 2015
Filed:
Mar. 13, 2012
Mark J. Swarny, Buena Vista, CO (US);
Daniel W. Aberle, Portland, OR (US);
Gregory W. Byrne, Jr., West Linn, OR (US);
Mark J. Swarny, Buena Vista, CO (US);
Daniel W. Aberle, Portland, OR (US);
Gregory W. Byrne, Jr., West Linn, OR (US);
CONTECH ENGINEERED SOLUTIONS LLC, West Chester, OH (US);
Abstract
A pipe includes a tubular pipe formed of a metal sheet that is spirally wound such that opposite edges of the metal sheet are joined by a crimped lock seam that extends helically along a length of the tubular pipe. A sealing arrangement includes a helically extending worked surface band extending along the crimped lock seam and to both sides of the crimped lock seam, the worked surface band having a surface roughness that is greater than a surface roughness of unworked surface portions outside of the worked surface band. A helically extending external coating band is applied over the crimped lock seam and bonded to the worked surface band.