Intumescent floor opening frame
First Claim
1. 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 ember to one side of the conduit passage through the first frame ember, 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.
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0 Petitions
Accused Products
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.
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Citations
6 Claims
- 1. 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 ember to one side of the conduit passage through the first frame ember, 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.
Specification