Over heating detection and interrupter circuit
First Claim
1. An over heating detection and interrupter circuit for detecting an over heating condition of an electrical plug having a first and a second electrical blades inserted into slots of a power source receptacle, comprising:
- a first and a second thermistor mounted directly to the first and second electrical blades for monitoring the temperature of the electrical plug;
an over heating detection circuit connected to said first and second thermistors for detecting an over heated condition in the electrical plug; and
an interruption circuit having a disconnect switch connected to said over heating detection circuit for disconnecting electrical power upon the detection of an over heated condition in the electrical plug.
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Accused Products
Abstract
An over heating detection circuit and an interrupter circuit are disclosed for interrupting electrical power from a power source receptacle to a load upon the detection of an over heating condition of an electrical plug. A heat sensitive device monitors the temperature of the electrical plug. The over heating detection circuit is connected to the heat sensitive device for detecting an over heated condition in the electrical plug. The interruption circuit includes a disconnect switch connected to the over heating detection circuit for disconnecting electrical power upon the detection of the over heated condition in the electrical plug.
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Citations
15 Claims
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1. An over heating detection and interrupter circuit for detecting an over heating condition of an electrical plug having a first and a second electrical blades inserted into slots of a power source receptacle, comprising:
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a first and a second thermistor mounted directly to the first and second electrical blades for monitoring the temperature of the electrical plug; an over heating detection circuit connected to said first and second thermistors for detecting an over heated condition in the electrical plug; and an interruption circuit having a disconnect switch connected to said over heating detection circuit for disconnecting electrical power upon the detection of an over heated condition in the electrical plug. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. An over heating detection and interrupter circuit for detecting an over heating condition of an electrical plug having a first and a second electrical blade inserted into slots of a power source receptacle, comprising:
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a first and a second thermistor mounted directly to the first and second electrical blades for monitoring the temperature of the electrical plug; a first and a second optocoupler interconnecting said first and second thermistor to an over heating detection circuit for detecting an over heated condition in the electrical plug; and an interruption circuit having a disconnect switch connected to said over heating detection circuit for disconnecting electrical power upon the detection of an over heated condition in the electrical plug.
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9. An over heating detection and interrupter circuit for interrupting electrical power from a power source receptacle to a load upon the detection of an over heating condition of an electrical plug inserted into a first and a second slot of the power source receptacle, comprising:
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an electrical plug housing supporting a first and a second electrical blade for insertion within the first and second slots of the power source receptacle; a first and a second thermistor mounted directly to said first and second electrical blades for monitoring the temperature of each of said first and second electrical blades; an over heating detection circuit connected to said first and second thermistors for providing an over heating detection circuit electrical output upon the detection of an over heated condition in one of said first and second electrical blades; and an interruption circuit having a disconnect switch connected for receiving said over heating detection circuit output for disconnecting electrical power to the load upon said over heating detection circuit detecting an over heated condition in one of said first and second electrical blades. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An over heating detection and interrupter circuit for detecting an over heating condition of an electrical plug having an electrical blade inserted into a slot of a power source receptacle, comprising:
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an electrical heat sensitive device mounted directly to the first and second electrical blades for monitoring the temperature of the electrical plug; an over heating detection circuit connected to said electrical heat sensitive device for detecting an over heated condition in the electrical plug; an optocoupler interposed between said electrical heat sensitive device and said over heating detection circuit for electrically isolating said electrical heat sensitive device from said over heating detection circuit; and an interruption circuit having a disconnect switch connected to said over heating detection circuit for disconnecting electrical power upon the detection of an over heated condition in the electrical plug.
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Specification