Static structures (e.g. – buildings) – Facer held by stiffener-type frame – Back-to-back facers spaced by concealed framing
Patent
1977-12-27
1979-05-08
Perham, Alfred C.
Static structures (e.g., buildings)
Facer held by stiffener-type frame
Back-to-back facers spaced by concealed framing
52729, 52738, 52772, E04B 230, E04B 278
Patent
active
041528786
ABSTRACT:
A metal stud for constructing a fire-rated wall and the wall structure formed of a plurality of studs mounted in runners and having at least a pair of spaced-apart layers of wallboard panels with adjacent panels in abutting relationship, the stud being formed of an integral piece of sheet metal and comprising a single layer web having a first plurality of oppositely directed flange means at one edge thereof and a second pair of oppositely directed flange means connected to the web means at the other end thereof and spaced-apart from the first pair of flange means a sufficient distance to provide a pair of oppositely directed channels receiving the edges of adjacent panels of a single layer, and means extending away from the second pair of oppositely directed flange means and being connected to and supporting a panel spaced apart from the first and second pairs of flange means and adapted to have the wallboard panels of a second layer affixed thereto in parallel spaced-apart relationship with regard to the first layer of wallboard panels. In an improved embodiment a plurality of apertures are provided in the web to reduce heat transfer therethrough and facilitate heat dissipation from the wallboard panels, thereby permitting the wall structure to obtain a favorable ASTM fire rating.
REFERENCES:
patent: 1446916 (1923-02-01), McElheny
patent: 1734685 (1929-11-01), Mays et al.
patent: 3271920 (1966-09-01), Downing, Jr.
patent: 3609933 (1971-10-01), Jahn et al.
patent: 3702044 (1972-11-01), Balinski
patent: 3740912 (1973-06-01), Sauer et al.
patent: 3839839 (1974-10-01), Tillisch
Kurlandsky Samuel
Ohlson Glenn W.
Perham Alfred C.
Robinson Robert H.
United States Gypsum Company
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