Method for manufacturing a ceramic heater

Details Method for manufacturing a ceramic heater Method for manufacturing a ceramic heater

1984-05-03

1987-02-03

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 67, 264325, B24B 1100

Patent

active

046408096

ABSTRACT:
A method of making a ceramic heater by preparing a heating coil having a circular cross-section and bending it into a U-shaped form. Lead wires are connected to the ends of the U-shaped coil; the coil is embedded in a ceramic powder to form a preform having a substantially rectangular cross-section. The preform is compacted under heat to reduce the length of the rectangular cross-section and deform the coil embedded therein into a coil having an oval cross-section. The preform is sintered to form a ceramic product having a substantially circular cross-section and then ground to form a product having a circular cross-section.

REFERENCES:
patent: 2030937 (1936-02-01), Reichmann
patent: 3017541 (1957-10-01), Lawser
patent: 3373724 (1968-03-01), Papst
patent: 3914500 (1975-10-01), Brennan et al.
patent: 4035613 (1977-07-01), Sagawa et al.
patent: 4108652 (1978-08-01), Ogawa
patent: 4153666 (1979-05-01), Alliegro
patent: 4192989 (1980-03-01), Jeromin
patent: 4314961 (1982-02-01), Steinkamp
patent: 4357526 (1982-11-01), Yamamoto et al.
patent: 4460423 (1984-07-01), Bosnia

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