Method for producing a sound-dampened automotive enclosure

Details Method for producing a sound-dampened automotive enclosure Method for producing a sound-dampened automotive enclosure

1992-11-30

1993-12-21

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Assembling or joining

291636, 291695, 298972, 72350, B21D 3500, B21D 2212

Patent

active

052711420

ABSTRACT:
A method for making a sound-dampened automotive enclosure, such as an oil pan, having a metal constraining layer, a metal housing layer, and a viscoelastic layer sandwiched therebetween. In a preferred embodiment, the constraining layer and viscoelastic layer are between the housing layer and the die while the housing layer is being drawn. This results in a very close and snug fit between the layers, leading to enhanced sound-dampening effectiveness. The article thus produced is also disclosed.

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