Cementitious sound absorbing panels and sound absorbing sprayed

Details Cementitious sound absorbing panels and sound absorbing sprayed Cementitious sound absorbing panels and sound absorbing sprayed

1976-07-14

1977-08-16

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

181 33G, 428141, 428321, 156257, 156264, B32B 326

Patent

active

040427455

ABSTRACT:
Sound absorbing panels and sprayed wall structures are produced from inorganic cementitious compositions to which preformed foams are admixed to yield low density fireproof products having an interconnected cellular structure and a perforated surface skin for the conversion of a large proportion of incident sound into heat and thus reduce the reflected energy to a small volume.

REFERENCES:
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patent: 1804753 (1931-05-01), Douglas
patent: 1839887 (1932-06-01), New
patent: 1900522 (1933-03-01), Sabine
patent: 1901057 (1933-03-01), Roos
patent: 1906123 (1933-04-01), Eaton
patent: 1914592 (1933-06-01), Birchy et al.
patent: 2008718 (1935-07-01), Jenkins
patent: 2096233 (1937-10-01), Ericson
patent: 2694025 (1954-11-01), Slayter et al.
patent: 3595947 (1971-07-01), Willinga
patent: 3819388 (1974-06-01), Cornwall
patent: 3995086 (1976-11-01), Plunguian et al.
patent: 4002788 (1977-01-01), Lott

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