Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1979-08-31
1981-07-14
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219 50, 219348, 219356, 219530, 219536, 165169, 338316, H05B 358
Patent
active
042788765
ABSTRACT:
A thermostatically controlled heater for heating metal work pieces to within a selected temperature range prior to and during a welding process is disclosed. The heater comprises an electric heating element thermally connected to a heat conductive shoe and electrically connected to a source of electric power via a thermostat assembly. The thermostat assembly includes a heat conductive housing mounted on the heat conductive shoe in intimate thermal contact. The housing contains a thermostat having a thermal sensing area in thermal contact with an area of the heat conductive housing for regulating the amount of electricity conducted to the electric heating element. Accurate control of the temperature of the workpiece is accomplished by constructing the heat conductive housing so that the temperature gradient between the shoe and the thermostat matches the temperature gradient between the shoe and the workpiece itself.
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Lindner Melvin
Savoca Paul F.
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