US 6,745,526 B1 · Fire retardant wooden door with intumescent materials

Abstract

A fire retardant wooden door that prevents the spread of fire through the door during a fire. The fire retardant wooden door has at least one door panel connected to stiles and rails by tongue and groove joints, and the tongue and groove joints have intumescent material therein. Each of the tongue and groove joints includes a tongue section having the intumescent material along a distal edge of the tongue section which expands upon exposure to heat or fire to seal the tongue and groove joints in order to prevent the heat or fire from passing through the door during a fire. Each of the tongue sections includes an interior channel extending along the axis of the tongue section, and the interior channel extends into the door panel. The interior channel has the intumescent material embedded therein which expands upon exposure to heat or fire to further seal the tongue and groove joints in order to prevent the heat or fire from passing through the door during a fire.

Claims24

Dependent claims

A fire retardant wooden door, comprising:

a) a door having at least one door panel or glass panel ¼″ fire rated and stiles and rails;
b) said at least one door panel being connected to said stiles and rails by tongue and groove joints, and said tongue and groove joints having intumescent material therein;
c) each of said tongue and groove joints includes a tongue section having said intumescent material along a distal edge of said tongue section which expands upon exposure to heat or fire to seal said tongue and groove joints in order to prevent the heat or fire from passing through said door during a fire;
d) each of said tongue sections includes an interior channel extending along the axis of said tongue section, and said interior channel extending into said at least one door panel;
and
e) said interior channel having said intumescent material embedded therein which expands upon exposure to heat or fire to further seal said tongue and groove joints in order to prevent the heat or fire from passing through said door during a fire.

3 more elements

Dependencies are inferred from the claim text.

Fire retardant wooden door with intumescent materials

Life of this patent

Fire retardant wooden door with intumescent materials

Life of this patent

Abstract

Claims24