Fire retarding heating and cooling duct

Details Fire retarding heating and cooling duct Fire retarding heating and cooling duct

1995-12-07

1996-11-19

Brinson, Patrick

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138131, 138133, 138178, F16L 914

Patent

active

055753124

ABSTRACT:
A fire retarding heating and cooling duct to impede the progress of fires in buildings and houses. The fire retarding duct is comprised of a duct core covered with a heat meltable plastic material that will melt at temperatures in the range of 180.degree. F. and above. The duct core is preferably constructed in short sections of about six feet for connection between heating and cooling, and building inlet and outlet plenums. The heat meltable plastic duct covering melts almost immediately when a building fire enters a plenum preventing the spread of a fire throughout the duct system.

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