Stock material or miscellaneous articles – All metal or with adjacent metals – Having aperture or cut
Patent
1991-04-12
1993-03-09
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Having aperture or cut
428597, 428608, 181290, 181291, B32B 324, B32B 502, B32B 1514, E04B 182
Patent
active
051926245
ABSTRACT:
The improved sound absorbing material comprises an aluminum base expanded metal (or an aluminum base metal screen) which is laminated with an aluminum base metal foil (or a thin resin film), or additionally with an aluminum base metal fiber layer. The aluminum base metal foil (or thin resin film) has ruptures, which vibrate in the process of sound absorption to permit the sound absorbing material to exhibit excellent sound-absorbing characteristics over a broad frequency range. The improved sound absorbing material can be produced by a process which comprises the steps of preparing a laminate comprising the members described above and pressing the laminate so that the individual members are compressed together while forming ruptures in a regular pattern in the aluminum base metal foil (or thin resin film).
REFERENCES:
patent: 1833143 (1931-11-01), Weiss
patent: 2076807 (1937-04-01), Burgess
patent: 2192653 (1940-03-01), Schenk
patent: 2251660 (1941-08-01), Chipley
patent: 3074505 (1963-01-01), Schulz
patent: 3077947 (1963-02-01), Peebles et al.
patent: 3509671 (1970-05-01), Akerson
patent: 3597891 (1971-04-01), Martin
patent: 3630312 (1971-12-01), Woodward
patent: 3881569 (1975-05-01), Evans, Jr.
patent: 4194329 (1980-03-01), Wendt
patent: 4310068 (1982-01-01), Erskine
patent: 4828932 (1989-05-01), Morimoto et al.
Unix Corporation Ltd.
Zimmerman John
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