Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Reexamination Certificate
2011-05-03
2011-05-03
Chapman, Jeanette E. (Department: 3633)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
C052S796100, C052S309100, C052S309400, C052S407100, C052S407200, C052S407300, C052S782100, C052S653200, C052S481100, C052S783110
Reexamination Certificate
active
07934349
ABSTRACT:
A fire resistant wall includes a frame assembly utilizing tubular steel studs having at least one opening at the bottom and at the top, a stratum of fire resistant material disposed in the inter-stud space, and a trim assembly structured to protect the gaps between adjacent panels. The openings in the studs allow hot fluid within the studs to be exhausted in a remote location and cool fluid to be drawn in from another remote location. The stratum of fire resistant material disposed in the inter-stud space resists heat and flames contacting the lateral sides of the studs when the inner stratum of the firewall collapses, or when gaps appear between adjacent inner stratum panels. The trim assembly preferably includes a metal bar with a concave back surface disposed over the gap between adjacent panels and an intumescent caulk disposed at least partially within the gap. An intumescent caulk expands when exposed to heat and fills the gap between inner stratum panels.
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NRC-IRC, Fire Resistance and Sound Insualtion of Load-Bearing Stud Wall Assemblies, Mar. 2, 2007, 7 pages.
United States Gypsum Company, Sheetrock brand Ultracode Core Gypsum Panels, Submittal Sheet 09250, 2 pages.
THERMAFIBER, Sound Attenuation Fire Blankets (SAFB), 2003, pp. 1-12.
Chapman Jeanette E.
Eckert Seamans Cherin & Mellott , LLC
Jenkins, Esquire David C.
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