Seal for catalytic converter and method therefor
US5207989A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Mar 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/251
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high temperature resistant seal for a catalytic converter is made from a high temperature resistant material including between approximately 28 and 60 dry weight percent high temperature resistant ceramic fibers and between approximately 20 and 50 dry weight percent high aspect ratio vermiculite. The seal is formed by mixing the resistant ceramic fibers with an aqueous dispersion of high aspect ratio vermiculite, applying the resultant mixture to a monolithic catalyst structure of a catalytic converter and heating the mixture and the monolithic catalyst structure to evaporate the water from the mixture. The seal and the monolithic catalyst structure can then be assembled in a housing to form a catalytic converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.