Electric heating – Heating devices – With current connection and/or disconnection means
Patent
1979-10-10
1981-12-01
Bartis, A.
Electric heating
Heating devices
With current connection and/or disconnection means
99281, 99288, 219253, 219283, 219302, 219308, 219328, 219441, 219449, 236DIG6, 236DIG12, 337377, 337380, 337417, H05B 102
Patent
active
043038271
ABSTRACT:
An electric heating appliance such as a coffeemaker, has a metallic base with an upper exposed surface and an electric heater on its lower side for heating the surface by conduction. A thermostat comprising a plastic-walled packaged unit with an opening through which an internal bimetal sensor is exposed is provided for controlling the heater and is mounted in a depressed niche formed in the surface of the heater. A detachable U-shaped metallic cover covers the opening and includes a heat-conducting projection extending through the opening very closely adjacent the sensor. The thermostat is positioned so that the cover faces and abuts the surface of the niche and a flexible clamp secures the thermostat in the niche and biases the projection and sensor closely together for fast thermostat response. The base may be an aluminum casting with the heater comprising a cast-in circular sheathed electric heating element. The thermostat is supported so that substantially all of the heat conduction from the heater to the sensor is direct and only through the projection.
REFERENCES:
patent: 2834868 (1958-05-01), Greene et al.
patent: 2856508 (1958-10-01), Kueser
patent: 3097289 (1963-07-01), Clark
patent: 3284599 (1966-11-01), Mertler
patent: 3369105 (1968-02-01), Wheeler
patent: 3678246 (1972-07-01), Blachly et al.
patent: 3869968 (1975-03-01), Ihlenfeld
patent: 3883717 (1975-05-01), Del Percio
patent: 4147925 (1979-04-01), Belinkoff
Bartis A.
Cullen John F.
General Electric Company
Platt Leonard J.
Powers George R.
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