Intumescent floor opening frame
AssigneeRoyal Group Technologies Limited
InventorLarry Whitty
Life of this patent
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Abstract
A frame for bordering conduit access through a building floor has a rigid body portion and a lining of intumescent material on an interior surface of the rigid body portion. The intumescent material has sufficient expansion capacity to close off the opening through the frame under conditions which produce an intumescing of the lining. The rigid body portion itself is preferably made of a metallic material to enhance transfer of heat energy from the rigid body portion to the lining of the frame.
Claims11
A frame for bordering a conduit access through a building separation, said frame having a rigid body portion with a conduit fitting opening through said rigid body portion, a lining of intumescent material on an interior surface of said rigid body portion, the intumescent material having sufficient expansion capacity to close off said conduit fitting opening under conditions which produce an intumescing of said lining.
A framing assembly comprising first and second frame members for bordering top and bottom sides of a conduit opening through a building floor, each of said frame members comprising a rigid body portion with a conduit passage therethrough, said assembly further including a rigid cover securable atop said first frame member to one side of the conduit passage through the first frame member, said second frame member being provided with a lining of intumescent material around the conduit passage through said second frame member, the intumescent material having sufficient expansion capacity to close off the conduit passage through the second frame member under conditions which produce an intumescing of the lining.
Dependencies are inferred from the claim text.