Appliance control system
First Claim
1. A control system for preventing the occurrence of unsafe operating conditions on an appliance load comprising:
- first and second switch elements coupled to said appliance load;
first controller means coupled to said first switch element for detecting a first predetermined fault condition and producing a first fault detection signal in response to said detection of said predetermined fault condition, said first fault detection signal deactivating said first switch element and de-energizing said load; and
second controller means coupled to said second switch element for detecting a second predetermined fault condition and producing a second fault detection signal in response to said detection of said predetermined fault condition, said second fault detection signal deactivating said second switch element and de-energizing said load.
2 Assignments
0 Petitions
Accused Products
Abstract
A control system for preventing the occurrence of unsafe operating conditions on an appliance load comprises first and second switch elements coupled to said appliance load; first controller means coupled to said first switch element for detecting a first predetermined fault condition and producing a first fault detection signal in response to said detection of said predetermined fault condition, said first fault detection signal deactivating said first switch element and de-energizing said load; and second controller means coupled to said second switch element for detecting a second predetermined fault condition and producing a second fault detection signal in response to said detection of said predetermined fault condition, said second fault detection signal deactivating said second switch element and de-energizing said load.
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Citations
16 Claims
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1. A control system for preventing the occurrence of unsafe operating conditions on an appliance load comprising:
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first and second switch elements coupled to said appliance load; first controller means coupled to said first switch element for detecting a first predetermined fault condition and producing a first fault detection signal in response to said detection of said predetermined fault condition, said first fault detection signal deactivating said first switch element and de-energizing said load; and second controller means coupled to said second switch element for detecting a second predetermined fault condition and producing a second fault detection signal in response to said detection of said predetermined fault condition, said second fault detection signal deactivating said second switch element and de-energizing said load. - View Dependent Claims (2, 3, 4, 5)
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6. A control system for detecting unsafe operating conditions in an appliance comprising:
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first and second switches coupled to said load such that the deactivation of one switch de-energizes said load; a memory containing predetermined unsafe operating conditions relating to said oven; a first controller coupled to said first switch and to said memory, said first controller sensing predetermined unsafe conditions in said appliance load and deactivating said first switch in response thereto; and a second controller coupled to said second switch and to said memory, said second controller sensing predetermined unsafe conditions in said appliance load and deactivating said second switch in response thereto. - View Dependent Claims (7, 8, 9, 10)
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11. A method for preventing the occurrence of unsafe operating conditions on an appliance load comprising the steps of:
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coupling first and second switch elements to said appliance load, detecting a predetermined fault condition in a first controller; deactivating said first switch element and de-energizing said load in response to said detection; detecting a predetermined fault condition in a second controller; and deactivating said second switch element and de-energizing said load in response to said detection. - View Dependent Claims (12, 13, 14, 15)
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16. A control system for use in a microwave oven comprising:
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a keyboard for receiving commands from a user; a first switch coupled to said load; a second switch coupled to said load; a memory for storing a plurality of predetermined voltage values; a first microprocessor coupled to said first switch, said memory, and said keyboard, said microprocessor detecting keyboard faults and processing user commands and opening said switch is response thereto and activating the first switch whenever the voltage across said load is below a selected one of said plurality of predetermined value; and a second microprocessor coupled to said second switch and said memory, said microprocessor senses whether the voltage level driving the load is below a threshold, said second microprocessor opening said switch is response thereto, said second microprocessor activating said second switch elements whenever the voltage across said load is below a predetermined value.
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Specification