Fire Retardant reinforced plastic duct system

Details Fire Retardant reinforced plastic duct system Fire Retardant reinforced plastic duct system

1996-03-05

1997-06-03

Joyce, Harold

Ventilation

Having outlet airway

With air pump

137 74, 454 49, F24F 1102

Patent

active

056348479

ABSTRACT:
Fiberglass reinforced plastic fume exhaust systems include duct walls having apertures therein covered with meltable thermoplastic resins mounted thereon which melt and open up the apertures when exposed to high temperatures thereby admitting ambient air therein to reduce the temperature downstream of the systems and reduce the suction pressure at source of the high temperatures.

REFERENCES:
patent: 4143671 (1979-03-01), Olson
patent: 4538389 (1985-09-01), Heinen
patent: 5449320 (1995-09-01), Shea

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