Flexible insulated duct and the method of making the duct

Details Flexible insulated duct and the method of making the duct Flexible insulated duct and the method of making the duct

1998-07-28

1999-09-07

Brinson, Patrick

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138156, 138158, 138153, 248 364, F16L 914

Patent

active

059471581

ABSTRACT:
An insulated air duct includes a flexible, reinforced, inner tubular core; a layer of partially compressed flexible, resilient fibrous insulation surrounding the core; and a flexible jacket, preferably with a longitudinally extending seam, spaced outwardly from the core and enveloping the layer of partially compressed fibrous insulation. The layer of partially compressed fibrous insulation is formed from a resilient blanket of air laid, randomly oriented, entangled fibers. The resilient blanket may have a low binder content or be binderless with the fibers unbonded and, possibly, lubricated. The lubricant on the fibers facilitates the sliding of the fibers relative to each other, reduces fiber attrition due to abrasion as the fibers move relative to each other; and enhances the resilience of the blanket when subjected to compression whereby the layer of compressed fibrous insulation surrounding the core remains expanded in its partially compressed state, to the extent permitted by a space between the core and the jacket, to provide the duct with good insulating properties and to exert an outward pressure on the jacket to improve the appearance of the jacket. Preferably, the resilient blanket is wrapped about the core while being supported on the jacket so that the blanket will not pull apart during the wrapping process.

REFERENCES:
patent: 2962402 (1960-11-01), Sweeney
patent: 3817804 (1974-06-01), Helmick et al.
patent: 3857590 (1974-12-01), Meeker
patent: 4023589 (1977-05-01), Rejeski
patent: 4025680 (1977-05-01), Botsolas et al.
patent: 4400228 (1983-08-01), Gentry
patent: 4410014 (1983-10-01), Smith
patent: 5154605 (1992-10-01), Suey

Affiliated with

Also associated with

Rating

Flexible insulated duct and the method of making the duct does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible insulated duct and the method of making the duct, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible insulated duct and the method of making the duct will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1793863