Noise abatement techniques and systems

Details Noise abatement techniques and systems Noise abatement techniques and systems

1978-02-14

1980-02-26

Dixon, Jr., William R.

Acoustics

Sound-modifying means

Methods

138126, 138127, 138137, 138149, 181207, 181288, 181290, 428 36, 428159, 428172, 428217, F16L 1100, B32B 514, B32B 702, G10K 1102

Patent

active

041901312

ABSTRACT:
The noise emanating from a noise-generating source, such as a machine tool or a stock tube, is reduced by covering the surface from or through which the noise emanates with a cladding comprising a first layer, an intermediate layer, and an outer layer. The first layer, 1 to 5 mm thick, of a resilient vibration-isolating material, being plastic foam, rubber foam, rubber, or fibrous material, has the function of decoupling the intermediate layer from the surface. The intermediate layer, 0.25 to 2.5 mm thick, of lead or metal-loaded plastic material in contact with and supported by the first layer, has the function of a sound-insulating barrier. The outer layer, resistant to impact, wear, and abrasion, has the function of surface protection. The total thickness of the three layers need be no more than 6 mm.

REFERENCES:
patent: 2534811 (1950-12-01), Corlett, Jr.
patent: 2809145 (1957-10-01), McDermott
patent: 3084088 (1963-04-01), Hunkeler
patent: 3295541 (1967-01-01), Ummel
patent: 3562089 (1971-02-01), Warnaka et al.
patent: 3665968 (1972-05-01), DePutter
patent: 3814659 (1974-06-01), Nadeau
patent: 3833086 (1974-09-01), Giraudeau
patent: 3894169 (1975-07-01), Miller
patent: 3922721 (1975-12-01), Gales et al.
IBM Technical Disclosure Bulletin, "Platen for Business Machines", Hymes, vol. 8, #7, Dec. 1965.

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