Method of producing a catalytic converter
US5555621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jul 5, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49345
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of making a catalytic converter for an automotive internal combustion engine comprises a cylindrical honeycomb catalyst carrier made of a ceramic and carrying a catalytic material. The catalyst carrier is encased within a cylindrical container upon being axially supported at its opposite end faces between oppositely disposed annular metal caps through cushioning materials. The metal caps are fixedly secured to the inner peripheral surface of the container by plug welding. In production of the catalytic converter, the plug welding is made in a state in which the metal caps are being biased to the catalyst carrier at a predetermined pressure by a pair of pressing jigs which respectively abut the metal caps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.