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US 12,250,752 B2Granted
Heater
AssigneeKYOCERA Corporation
InventorTsubasa Shimao
Life of this patent
Estimating the term…
Abstract
A heater of the disclosure includes: an insulating base including a rod-shaped portion; a heat generating resistor located inside the insulating base; a fixing member which is cylindrical, wherein the insulating base is inserted into the fixing member; and a spacer which is belt-shaped, located between the rod-shaped portion and the fixing member, and surrounds the rod-shaped portion in a circumferential direction. The spacer includes a first end and a second end which face the first end.
Claims3
A heater, comprising:
- an insulating base including a ceramic body and a ceramic cylinder, wherein a first ceramic body end of the ceramic body is inserted in the ceramic cylinder;
- a heat generating resistor located inside the ceramic body;
- a cylindrical ring with an open center, wherein a first ceramic cylinder end of the ceramic cylinder is inserted into the open center and the cylindrical ring surrounds a portion of the ceramic cylinder;
- and
- a spacer which is belt-shaped, located between the ceramic cylinder and the cylindrical ring, and surrounds the ceramic cylinder in a circumferential direction, wherein
- the spacer comprising a first spacer end and a second spacer end which faces the first spacer end,
- the first spacer end comprises a recessed portion,
- the second spacer end comprises a protruding portion,
- the protruding portion is located in the recessed portion, and includes a central portion located in the recessed portion and two outer edge portions, each of the two outer edge portions extend in a thickness direction away from the ceramic cylinder, and
- a thickness of the outer edge portion in a length direction of the ceramic cylinder is smaller than a thickness of the central portion.
7 more elements
Dependencies are inferred from the claim text.