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US 10,480,786 B2Granted
Heater and glow plug including the same
AssigneeKYOCERA Corporation
InventorNorimitsu Hiura
Life of this patent
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Abstract
A heater of this invention includes an insulating base made of a ceramic, a resistor buried in the insulating base, and leads connected to end portions of the resistor, in which both the resistor and the leads contain electrical conductors and insulating ceramic particles dispersed in the electrical conductors and the insulating ceramic particles contained in the resistor are smaller than the insulating ceramic particles contained in the leads.
Claims7
A heater, comprising:
- an electrically insulating base made of at least one of a ceramic material;
- a resistor buried in the electrically insulating base;
- and
- a lead connected to the resistor;
- wherein the resistor contains a first set of electrically insulating ceramic particles, and the lead contains a second set of electrically insulating ceramic particles,
- wherein an average particle diameter of the first set of electrically insulating ceramic particles is smaller than an average particle diameter of the second set of electrically insulating ceramic particles, and
- the first set of electrically insulating ceramic particles and the second set of electrically insulating ceramic particles are both made of the same material as at least one of the ceramic material forming the electrically insulating base.
4 more elements
Dependencies are inferred from the claim text.