Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1980-10-28
1983-07-19
Yasich, Daniel M.
Communications: electrical
Condition responsive indicating system
Specific condition
200 6158R, 219511, 307117, H01H 3746, H05B 302
Patent
active
043946461
ABSTRACT:
The temperature indicator has a temperature sensor which operates a switch. The temperature sensor is exposed to the heat of both the heating system of the glass ceramic cooking surface and an auxiliary heating system. The switch opens and closes a circuit including an indicating member indicating the state of the cooking surface. To ensure that the temperature indicator operates with maximum precision the switch is positioned outside the heated area and the temperature indicator is thermally closely coupled to the heating system of the glass ceramic cooking surface and/or the glass ceramic cooking surface itself. Thus, in all operating states its cooling time is the same as the cooling time of the glass ceramic cooking surface.
REFERENCES:
patent: 2735924 (1956-02-01), Shaw
patent: 2943176 (1960-06-01), Holtkamp
patent: 2993976 (1961-07-01), Moore
patent: 3243792 (1966-03-01), Hamilton
patent: 3711726 (1973-01-01), Wiechert
patent: 3719796 (1973-03-01), Abildtrap
patent: 3738175 (1973-06-01), Linsig
patent: 3789189 (1974-01-01), Fischer et al.
patent: 4201735 (1980-05-01), Byam
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