Static structures (e.g. – buildings) – Irreversibly reactive component
Reexamination Certificate
2005-02-01
2005-02-01
Canfield, Robert (Department: 3635)
Static structures (e.g., buildings)
Irreversibly reactive component
C052S220800, C052S001000, C174S0450TD, C227S059000
Reexamination Certificate
active
06848227
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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Canfield Robert
Royal Group Technologies Limited
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