Flexible insulated air duct

Details Flexible insulated air duct Flexible insulated air duct

1982-03-29

1983-10-18

Bryant, III, James E.

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138125, 138131, 138172, F16L 914

Patent

active

044100140

ABSTRACT:
A glass wool blanket is formed directly on glass fiber scrim for use in flexible insulated air duct with any kind of outer jacket. The scrim-faced wool passes the flame-penetration test of Underwriter's Laboratories Standard UL 181 regardless of the outer jacket material used.

REFERENCES:
patent: 3502114 (1970-03-01), Hay
patent: 3513065 (1970-05-01), Pearson
patent: 4001472 (1977-01-01), Thomas et al.
patent: 4006079 (1977-02-01), Langlois et al.
patent: 4054710 (1977-10-01), Botsolas

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