Damped heat shield
US5233832A · kind A · utility
15Cited by
17References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | May 14, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2260/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A damped heat shield for a vehicle exhaust manifold includes inner and outer thin steel layers. An intermediate aluminum layer is located between the two steel layers. A high temperature corrosion-resistant coating is applied to the exterior surfaces and the edges of the shield. Such coating along the edges prevents the entry of corrosion producing substances into the interior of the shield. The outer steel layer has a thickness greater than the inner steel layer, so that the two layers do not resonate at the same frequency, and therefore, tend to damp vibrational energy more efficiently and reduce radiated sound energy and noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.