Patent ID: 6204481
Filing Date: 2001-03-20
Classification: H05B

Abstract:
A ceramic heater comprising a metallic shell with a tip end, wherein said metallic shell has at its tip end a seat surface that abuts a structural body when said ceramic heater is attached to the structural body; and a ceramic heating member disposed within said metallic shell such that a tip end portion is projected from said metallic shell, said ceramic heating member comprising:a ceramic body;a conductive ceramic element embedded in said ceramic body and adapted to generate heat upon reception of electricity; andat least one electrode having an end embedded in an end of said conductive ceramic element, wherein said electrode is disposed such that a distance L between the end of the electrode embedded in said conductive ceramic element and the end of the seat surface of said metallic shell satisfies the expression L.ltoreq.1 mm, where the distance L is considered negative when the end of the electrode is located within said metallic shell.