Thermal protection system for electrical appliance
First Claim
Patent Images
1. An electrical appliance, comprising:
- a housing;
a drive motor carried on the housing;
a temperature sensor carried on said housing, said temperature sensor monitoring an operating temperature of said drive motor; and
a controller carried on said housing, said controller being responsive to said temperature sensor and adjusting current applied to said drive motor in response to a high temperature condition detected by said temperature sensor.
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Abstract
An electrical appliance includes a housing carrying a drive motor, a temperature sensor and a controller. The temperature sensor monitors the operating temperature of the drive motor. The controller is responsive to the temperature sensor. The controller adjusts the current applied to the drive motor in response to a high temperature condition detected by the temperature sensor.
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Citations
28 Claims
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1. An electrical appliance, comprising:
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a housing;
a drive motor carried on the housing;
a temperature sensor carried on said housing, said temperature sensor monitoring an operating temperature of said drive motor; and
a controller carried on said housing, said controller being responsive to said temperature sensor and adjusting current applied to said drive motor in response to a high temperature condition detected by said temperature sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vacuum cleaner, comprising:
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a housing;
a suction generator carried on said housing, said suction generator including a drive motor;
a temperature sensor carried on said housing, said temperature sensor monitoring an operating temperature of said drive motor;
a rotary agitator carried on said housing; and
a controller carried on said housing, said controller being responsive to said temperature sensor and adjusting current applied to said drive motor in response to a high temperature condition detected by said temperature sensor. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A vacuum cleaner, comprising:
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a housing;
a dirt collector carried on said housing;
a suction generator carried on said housing, said suction generator including a first drive motor;
a first temperature sensor carried on said housing, said first temperature sensor monitoring an operating temperature of said first drive motor;
a rotary agitator carried on said housing;
a second drive motor driving said rotary agitator;
a second temperature sensor carried on said housing, said second temperature sensor monitoring an operating temperature of said second drive motor; and
a controller carried on said housing, said controller being responsive (a) to said first temperature sensor and adjusting current applied to said first drive motor in response to a high temperature condition detected by said first temperature sensor and (b) to said second temperature sensor and adjusting current applied to said second drive motor in response to a high temperature condition detected by said second temperature sensor. - View Dependent Claims (19, 20, 21)
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22. A method of thermally protecting an electrical device, comprising:
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equipping said electrical device with a temperature sensor and a controller responsive to said temperature sensor;
adjusting current applied to at least a portion of said electrical device in response to said temperature sensor sensing a high temperature condition. - View Dependent Claims (23, 25)
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24. A method of thermally protecting a vacuum cleaner, comprising:
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equipping said vacuum cleaner with a temperature sensor and a controller responsive to said temperature sensor;
adjusting current applied to at least a portion of said vacuum cleaner in response to said temperature sensor sensing a high temperature condition.
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26. An electrical device, comprising:
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an electric motor;
a temperature sensor monitoring an operating temperature of said electric motor; and
a controller responsive to said temperature sensor and adjusting current applied to said electric motor in response to a high temperature condition detected by said temperature sensor. - View Dependent Claims (27, 28)
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Specification