Structure for electrically heatable catalytic core
US5070694A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
There is provided an improved electrically heatable core for an electrically heatable catalytic converter. The core is characterized by a plurality of corrugated thin metal strips secured to an electrically conductive central core or tube. Alternating with the corrugated thin metal strips are narrow strips of brazing metal in an axially staggered pattern. These strips are spirally wound and fused to braze them together in a unified monolith. A retainer shell is supplied to hold the monolith together. The core is placed in a housing fitted with insulated means for conducting electric current to the monolith to effect heating. The housing is then inserted in an exhaust line where it is effective to control start-up pollution, and where the monolith is constrained against telescoping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.