Laminar electrical heaters

Electric heating – Heating devices – With heating unit structure

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Details

1562751, 174DIG8, 219528, 219505, 219541, 219553, 338212, 338 22R, 252511, H05B 334

Patent

active

045174490

ABSTRACT:
Laminar heaters comprise a laminar heating element sandwiched between two laminar electrodes having substantial electrical resistance along the thickness thereof. The heater has a heating area of irregular shape, and at least one of the electrodes extends over a connection area in which heat is not generated but which provides a shorter and/or more uniform current path to the heat-generating parts of the heater.

REFERENCES:
patent: 2952761 (1960-09-01), Smith-Johannsen
patent: 2978665 (1961-04-01), Vernet et al.
patent: 3221145 (1965-11-01), Hager, Jr.
patent: 3397302 (1968-08-01), Hosford
patent: 3448246 (1969-06-01), Armbruster
patent: 3535494 (1970-10-01), Armbruster
patent: 4085286 (1978-04-01), Horsma et al.
patent: 4177446 (1979-12-01), Diaz
patent: 4272471 (1981-06-01), Walker
patent: 4317027 (1982-02-01), Middleman et al.
patent: 4330703 (1982-05-01), Horsma et al.
European Search Report dated Sep. 19, 1984, MP0867/EPC.

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