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US 5,367,850 AGranted
Fire-rated corner guard structure
AssigneePawling Corporation
InventorJohn D. Nicholas
Life of this patent
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AssigneePawling Corporation
InventorJohn D. Nicholas
Estimating the term…
A fire-resistant wall structure is provided with a recessed corner guard, for absorbing impact forces, particularly at an external corner. To compensate for the relative loss of fire-resistance capability, in the area in which the wall structure is recessed to receive the corner guard structure, surfaces within the recess are provided with a layer of intumescent paint which, when exposed to sufficiently elevated temperature, expands to develop a thick, cellular foam providing a highly effective insulating layer. The intumescent paint can be applied to surfaces of the recess itself, and/or surfaces of the corner guard assembly installed in the recess. In the latter case, the paint can be applied at the factory where the corner guard components are manufactured. Significant benefits are realized in relation to prior practices of installing ceramic matting in the wall recess at the construction site.
A fire and impact resistant corner structure for a fire resistant wall structure comprised of layers of fire resistant material and including an external corner and having a recess in said layers at said external corner where the fire resistant character of said corner structure is reduced, and having an impact resistant structure mounted in said recess, where said impact resistant structure includes a metal retainer strip mounted in said recess and a plastic cover member installed in said recess and secured by said retainer strip, characterized by,
A fire resistant wall structure according to clam 1, further characterized by
Dependencies are inferred from the claim text.