Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Richard F. Blum0
Ashok M. Shah0
John J. Toben0
Michael C. Borwig0
Date of Patent
March 23, 2010
0Patent Application Number
106687340
Date Filed
September 23, 2003
0Patent Primary Examiner
Patent abstract
A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.
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