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US 10,533,744 B2Granted
Heater and glow plug equipped with same
AssigneeKYOCERA Corporation
InventorKotaro Taimura
Life of this patent
Estimating the term…
Abstract
A heater includes a ceramic body of bar shape; and a heat-generating resistor disposed in an inside of the ceramic body, when viewed in a transverse section, the heat-generating resistor including at least one step portion provided in an outer periphery part of the heat-generating resistor, the at least one step portion having such a shape that semicircular portions bisected in a diametrical direction of the heat-generating resistor deviate from each other along the diametrical direction.
Claims12
A heater, comprising:
- a ceramic body having a bar shape;
- and
- a heat-generating resistor disposed inside the ceramic body,
- when viewed in a transverse section, the heat-generating resistor comprising at least one pair of semicircular portions, such that each of the semicircular portions of each of the at least one pair of semicircular portions are axially offset from a center axis of the heat-generating resistor when viewed in the transverse section, wherein each offset semicircular portion forms a step portion that bisects the pair of semicircular portions in a diametrical direction of the heat-generating resistor.
1 more element
Dependencies are inferred from the claim text.