Sound deadening

Details Sound deadening Sound deadening

1980-05-23

1982-02-16

Beck, Shrive P.

Stock material or miscellaneous articles

Composite

Of polythioether

181290, 181296, 427405, 427406, 427409, 427421, 4284258, 428447, 428450, 428457, B32B 2706, B05D 102

Patent

active

043159710

ABSTRACT:
A sound deadening coating is provided on an article, such as an engine cover, by applying a polysulphide, silicone or polyurethane rubber layer to the surface of the article and applying a layer of zinc, aluminium or ferrous metal or their alloys to the rubber layer. Preferably, polysulphide rubber and zinc metal are used. The metal or alloy may be applied to the rubber layer when the latter is only partly cured. Preferably, the rubber and metal layers are sprayed.

REFERENCES:
patent: 3574108 (1971-04-01), Lewis
patent: 3577306 (1971-05-01), Baker et al.
patent: 3894169 (1975-07-01), Miller
patent: 4101698 (1978-07-01), Dunning et al.
patent: 4190131 (1980-02-01), Robinson
patent: 4223069 (1980-09-01), Berghmans

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