Flanged connector for HVAC ducting

Details Flanged connector for HVAC ducting Flanged connector for HVAC ducting

2007-05-15

2007-05-15

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Flange

C285S424000, C285S363000

Reexamination Certificate

active

10858681

ABSTRACT:
Flanged rings for the connection end-to-end of thin, double walled circular ducting includes a first generally-circularly shaped ring having an outer insertion flange for connection to the outer wall of the double-walled duct. The first ring also includes: an exterior mating flange extending transversely from the outer insertion flange to define a first mating face; and an exterior hem that is substantially concentric to the outer flange to extend outwardly from the outer perimeter of the exterior mating flange. The flanged ring also includes: a second ring having an inner insertion flange connectable to the inner wall of the double-walled duct; the interior mating flange transverse from the interior insertion flange to define a second mating face; and an interior connection hem substantially concentric to the inner insertion flange and extending from the outer perimeter of the interior mating flange to overlap and be connected to the outer insertion flange.

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