Fail-safe sensor/override for circuit

Abstract

Abstract A temperature override sensor for a control circuit for a heating device including an electric switch and temperature control means to control and regulate the amount of heat developed by a heating device. The temperature override sensor is so connected in the circuit as to be operable to permit normal temperature control operation of activators for the heating element in a desirable ambient temperature condition, and operable under abnormal blanket and ambient temperature conditions to override the normal operating components and circuitry to shut off completely functioning of the heating element or device. This is accomplished by physically mounting the temperature override sensor on a control or operating actuator for the heating element or device, so that a critical sensing of the temperature of the actuating device is compared with the, for example, voltage divider in receptacle and with the temperature range in which the heating device is utilized, the disparity between the two temperature ranges in the voltage divider means, one critical, one wide, permits the use of the safety override device that will cut off any control, and which further does not interfere with the normal operation of the heating control itself unless an untoward or unsafe condition of room temperature or connection plug temperature exists.

Inventors

• 👤 Peter Lauck

Bibliographic Details