Temperature limiting control for an electric heating device

Details Temperature limiting control for an electric heating device Temperature limiting control for an electric heating device

1991-02-13

1992-07-21

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With longitudinally expansible solid element

219449, H01H 3704, H01H 3752

Patent

active

051326574

ABSTRACT:
A temperature limiting control for an electrical heating appliance such as a ceramic hob comprises switch means (11) and a temperature sensor (10) connnected thereto. The temperature sensor comprises an elongate reference member (12) of ceramic or other low expansion material and an elongate expansion member (13), for example a tape of high chrome steel, relative expansion of the two members operating the switch. The switch (11) and reference member (13) lie to one side of the expansion member (12) so that the latter may be placed closely adjacent the top (2) of the appliance.

REFERENCES:
patent: 2154043 (1939-04-01), Gough
patent: 3710076 (1973-01-01), Frazier
patent: 3723935 (1973-03-01), Frazier
patent: 4754253 (1988-06-01), Slack et al.

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