Overheat-Resistant Power Cord and Method

摘要

An overheat-protection device with a cord that includes a transmission wire to transmit electrical power and a sensor wire to transmit a signal, a plug attached to an end of the cord, and a thermistor includable in the plug and connected to the sensor wire. The signal may be received and/or analyzed by a sensing device, which may control a switching device to open and/or close a power circuit. The thermistor may detect a level of heat, which may be communicated as a signal via the sensor wires. The signal may be definable by the thermistor varying a level of resistance to the signal responsive to the level of detected heat. The thermistor may be a NTC thermistor and may be constructed from a thermal plastic or a ceramic.

主权项

1. An overheat-protection device comprising:
a cord comprising transmission wires to transmit electrical power and at least two sensor wires to transmit a signal; a plug attached to an end of the cord, the plug comprising two or more prongs included therein to interface with an electrical power source; a thermistor includable in the plug and connected to the at least two sensor wires to vary the signal carried by the at least two sensor wires; and a switching device to open or close a power circuit responsive to the signal carried by the at least two sensor wires, the switching device being controllable by a sensing device.