Energized range burner signal
First Claim
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1. In combination:
- an electrical resistive heating element;
a selector switch for connecting a source of electrical power across said element;
a voltage divider network having two resistors and an alarm switch connected in series, said network being connected in parallel with the heating element;
means for opening the alarm switch when a utensil is placed on the heating element and for closing the switch when no utensil is present on the heating element; and
alarm signal means for producing an alarm signal connected across one of the resistors of the network, said alarm signal circuit means producing an alarm signal only when a source of electrical power is connected across the heating element and no utensil is placed on the heating element.
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Abstract
When a top burner of the electric range is energized, a sensible signal means is simultaneously activated. This sensible signal means is deactivated by the act of placing a cooking utensil upon said energized top burner. Circuit means are provided for electrically coupling energy from the energized top burner of the electric range. Such circuit means will include electric switching devices which are operative to deactivate the sensible signal when a cooking utensil is placed upon the energized top burner.
16 Citations
10 Claims
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1. In combination:
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an electrical resistive heating element; a selector switch for connecting a source of electrical power across said element; a voltage divider network having two resistors and an alarm switch connected in series, said network being connected in parallel with the heating element; means for opening the alarm switch when a utensil is placed on the heating element and for closing the switch when no utensil is present on the heating element; and alarm signal means for producing an alarm signal connected across one of the resistors of the network, said alarm signal circuit means producing an alarm signal only when a source of electrical power is connected across the heating element and no utensil is placed on the heating element. - View Dependent Claims (2, 3, 4)
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5. In an electrical range having a plurality of electrical resistive heating elements and selector switch means for connecting a source of electric power across each element, and an alarm apparatus comprising:
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one of said plurality of alarm circuits, each alarm circuit including an alarm switch, one alarm circuit being associated with each heating element, and each alarm circuit being connected in parallel with its associated heating elements; means for opening the alarm switch of an alarm circuit when a cooking utensil is placed on the heating element with which each alarm circuit is associated; and an alarm signal circuit means operatively connected to each alarm circuit for producing an audible alarm signal, said alarm signal circuit means producing audible alarm signals when a source of electrical power is connected across one of said heating elements and no cooking utensil is positioned on that heating element. - View Dependent Claims (6, 7, 8, 9)
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10. In combination:
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an electrical resistive heating element; a selector switch for connecting a source of electrical power across said element; and alarm circuit means for sensing when electrical power is connected across said element for sensing when a utensil is positioned on said element, and for producing an alarm signal only when power is connected across said element and no utensil is positioned on said element.
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Specification