PTC electric heating element assembly

Electric resistance heating devices – Heating devices – Tank or container type liquid heater

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Details

219505, 219541, 219386, F24C 710, F27D 1100, H05B 102

Patent

active

052631150

ABSTRACT:
An improved PTC electric heating element assembly comprises a heating element of a ceramic material with positive temperature coefficient, two insulating elements with different thickness, and four metal sheets, which are arranged in a stack to firmly join together by a fastening means fixed on the bottom of a container. The opposite sides of the heating element are contacted by metal sheets having electrodes which are connected to electric wires to effectively conduct the heat produced to the container.

REFERENCES:
patent: 2251411 (1941-08-01), Metzger
patent: 4253007 (1981-02-01), Dannatt
patent: 4284877 (1981-08-01), Abura et al.
patent: 4324974 (1982-04-01), Steiner
patent: 4337282 (1982-04-01), Nauerth
patent: 4628189 (1986-12-01), Danko
patent: 4689878 (1987-09-01), Beauregard et al.
patent: 4730103 (1988-03-01), Hawkins

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