Sound deadening
US4315971A · kind A · utility
7Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | May 23, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.