Method of forming a decorative foamed resin speaker cover

Details Method of forming a decorative foamed resin speaker cover Method of forming a decorative foamed resin speaker cover

1986-10-10

1988-09-06

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264129, 264225, 264338, 425817R, B29C 6722, B29C 3344

Patent

active

047691883

ABSTRACT:
A decorative speaker cover and a method for fabricating a speaker cover for use in a ceiling or wall comprising panels, the speaker cover having an appearance which blends with other panels so that it conceals the presence of a speaker system while providing satisfactory transmission of sound from the speaker system. The decorative speaker cover is fabricated by first forming a mold liner suitable for generating a facsimile of a ceiling or wall panel. Next, the mold liner is placed in a molding container and a closed cell expandable foam system is uniformly spread over the mold liner so that the foam rises vertically. The thickness of the resulting cast is reduced to a dimension below which acoustic transmission loss is not discernable by human ears.

REFERENCES:
patent: 3046177 (1962-07-01), Hankins
patent: 3101244 (1963-08-01), Hood et al.
patent: 3127457 (1964-03-01), Di Pinto
patent: 3359351 (1967-12-01), Bender
patent: 4028450 (1977-06-01), Gould
patent: 4055613 (1977-10-01), Kapral
patent: 4390337 (1983-06-01), Gately

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