E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
181/14, 26/184
E04B 1/82 (2006.01) E04B 9/04 (2006.01) E04C 2/38 (2006.01)
Patent
CA 1308668
ABSTRACT An acoustical panel, for ceilings or for area separation, and the method of making such panels, wherein the panel consists essentially of a unitary frame consisting of four sides, each with an inwardly opening channel, an outwardly opening rebend and a downwardly extending flange, the panel further including a rigid gypsum board with edges filling the frame channel, a low density sound absorbing mat within the confines of the downwardly extending flanges, and a porous fabric facing concealing the acoustical mat and affixed to the frame by disposing the fabric edges in the outwardly opening rebends and crimping the rebends tightly closed.
600739
Heuer Andrew E.
Menchetti Robert J.
National Gypsum Company
Osler Hoskin & Harcourt Llp
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