Double-layered ceramic heater
US5331134A · kind A · utility
36Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1993 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | May 17, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/2001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Proposed is an improved double-layered ceramic heater consisting of an insulating ceramic base plate and two patterned resistance heater element layers formed on both surfaces of the base plate. The improvement comprises forming the patterned heater element layers in such a fashion that the gap space of the heater element layer on one surface, where no heat is evolved by energizing, is opposite face-to-face with the complementary heat-evolving area of the heater element layer on the other surface of the base plate so as to improve uniformity of the temperature distribution over the whole surface of the ceramic heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.