Resistance adjusting type heater
US5202547A · kind A · utility
29Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24149
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A resistance adjusting type heater has a honeycomb structure having a large number of passages, at least two electrodes to enable electrical heating of the honeycomb structure provided on the honeycomb structure, and a resistance adjusting means, a slit, provided between the electrodes. The thicknesses of passage walls at the portions of the honeycomb structure at which electricity flows at a very high density are increased with a conductive material to prevent the abnormal heat generation at the portions of the honeycomb structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.