F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 9/17 (2006.01) B21D 5/00 (2006.01) B21D 39/02 (2006.01) F24F 13/02 (2006.01)
Patent
CA 2586640
A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.
Bloom Vincent L.
Gudenburr Douglas G.
Ductmate Industries Inc.
Smart & Biggar
LandOfFree
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