Device for attenuating noise emitted to the environment by noise

Details Device for attenuating noise emitted to the environment by noise Device for attenuating noise emitted to the environment by noise

1978-07-12

1980-12-16

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400690, 181201, B41J 312

Patent

active

042393981

ABSTRACT:
A device for attenuating noise emitted to the environment by noise-generating aggregates, while simultaneously dissipating heat, provides a housing about the noise-generating aggregate, which housing comprises a pot-shaped capsule of noise-attenuating material and a cover of noise-attenuating material which seals the capsule. In addition, an arrangement, including heat-conducting material, is provided for promoting heat flow from the housing.

REFERENCES:
patent: 3770092 (1973-11-01), Grim
patent: 3860085 (1975-01-01), Gilbert et al.
patent: 4009772 (1977-03-01), Glaser et al.
patent: 4044668 (1977-08-01), Barrus et al.
patent: 4135830 (1979-01-01), Hishida et al.
"The Performance of Acoustic Hoods at Low Frequencies", by R. S. Jackson, Acustica, vol. 12, No. 3, 1962, pp. 139-152.

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