Static structures (e.g. – buildings) – Multiroom or level – Partition secured to and crossed by preconstructed barrier
Patent
1985-05-09
1986-12-23
Perham, Alfred C.
Static structures (e.g., buildings)
Multiroom or level
Partition secured to and crossed by preconstructed barrier
52144, 52145, 181286, 181287, 181290, E04B 228
Patent
active
046304169
ABSTRACT:
A movable, prefabricated wall panel having a rigid rectangular frame. A core structure is disposed in the region bounded by the frame, which core structure preferably comprises at least one honeycomb layer. Sheetlike skins are fixedly secured to opposite sides of the frame and extends across the region bounded by the frame for confining the honeycomb layer therebetween. A plurality of small openings are formed in either or both of the skins so that they communicate with cells of the honeycomb layer to create Helmholtz sound-absorbing chambers. Each sheetlike skin is covered by a layer of porous fiberglass material for absorbing sound, which layer includes an inner thin mat of high-density fiberglass which is in turn covered by a relatively thick outer layer of low-density fiberglass. This outer layer has a variable density gradient across the thickness thereof, which density gradient progressively increases across the thickness toward the mat.
REFERENCES:
patent: 3712846 (1973-01-01), Daniels et al.
patent: 3934382 (1976-01-01), Gartung
patent: 4084366 (1978-04-01), Saylor et al.
patent: 4084367 (1978-04-01), Saylor et al.
patent: 4155211 (1979-05-01), Saylor et al.
Lapins Daniel W.
Szymanski Richard
Haworth Inc.
Perham Alfred C.
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