Air duct and method of making same

Details Air duct and method of making same Air duct and method of making same

1996-05-23

1999-07-06

Stryjewski, William

Pipes and tubular conduits

Distinct layers

With longitudinal seam

523099, 5230914, 138149, 138146, 138155, 138158, F16L 914

Patent

active

059186445

ABSTRACT:
An air conveying duct has a foam core sealed on the inside and reinforced on the outside. The duct absorbs noise and neither introduces impurities into the air nor collects impurities from the air.

REFERENCES:
patent: 3251382 (1966-05-01), Tatsch
patent: 4022248 (1977-05-01), Hepner et al.
patent: 5310594 (1994-05-01), Holland et al.
patent: 5527598 (1996-06-01), Campbell et al.
patent: 5549942 (1996-08-01), Watts
Amcraft, Inc., literature re Fiberglass Duct Fabrication.
NAIMA literature re Technical Library of Fibrous Glass Insulated Air Ducts.

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