Static structures (e.g. – buildings) – Relatively yieldable preformed separator – Separator inserted prior to or during pouring of two...
Patent
1985-09-26
1987-01-27
Perham, Alfred C.
Static structures (e.g., buildings)
Relatively yieldable preformed separator
Separator inserted prior to or during pouring of two...
52475, 52484, 52785, E04B 180, E04B 190
Patent
active
046386165
ABSTRACT:
A ceiling panel adapted to be supported by its edges from a ceiling-suspended framework provides improved thermal barrier characteristics and resists upward displacement by strong air currents such as generated by fires. The panel is comprised of a rigid gypsum board center portion of rectangular perimeter, a lower layer of inorganic material having a downwardly disposed contoured surface, and an upper stratum of thermally insulative material. A shoulder is formed between the perimeters of the center portion and lower layer. A resilient sealing strip attached to the shoulder causes the panel to seat firmly upon the ceiling-suspended framework.
REFERENCES:
patent: 3084402 (1963-04-01), Jordan, Jr. et al.
patent: 3153304 (1964-10-01), Evangelista
patent: 3325954 (1967-06-01), Olson
patent: 3765141 (1973-10-01), Shayman
patent: 4428454 (1984-01-01), Capaul et al.
Perham Alfred C.
Rainer Norman B.
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