Ceramic heater, oxygen sensor and hair iron that use the ceramic heater
US8604396B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Apr 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To provide a ceramic heater that has high durability by increasing the bonding strength between the lead member and the brazing material, the ceramic heater comprises a ceramic base, a heating resistor embedded in the ceramic base, an external electrode that is disposed on side face of the ceramic base and is electrically connected to the heating resistor, and a lead member brazed onto the external electrodes, wherein the distance between a point in the brazed portion of the periphery of the lead member and a center of the lead member is smaller than the distance between an another point in the brazed portion and the center, in a section of the lead member perpendicular to the longitudinal direction of the lead member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.