Electric heating – Heating devices – With current connection and/or disconnection means
Patent
1977-01-14
1978-08-01
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With current connection and/or disconnection means
60531, 219222, 219505, 338 22R, H05B 102
Patent
active
041045076
ABSTRACT:
A positive temperature coefficient heater for enhancing the response time of thermal actuators is disclosed. The PTC heater is formed of a generally low resistance material that has an anomaly temperature above which the resistance of the heater increases dramatically. The anomaly temperature is chosen to substantially match the phase change temperature of a thermally expansive medium useful to power the actuator. The heater is self-regulating and provides a maximum surface area for heating the medium rapidly with a minimum of thermal mass and energy use. Preferably, the heater is formed of doped BaTiO.sub.3 in the general shape of an elongated annular cylinder.
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Krueger Helmut H. A.
Sobecks Ronald S.
Tauber Richard N.
Tisone Thomas C.
Design & Manufacturing Corporation
Mayewsky Volodymyr Y.
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