Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1985-03-04
1986-03-18
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340568, 340613, 340624, 340640, 340666, 219518, 219452, 219453, 200 85R, 126 42, G08B 1900, H05B 102
Patent
active
045771812
ABSTRACT:
An alarm system for an electric range which detects when a burner is energized without a utensil in place on the burner wherein the sensing means comprises an electrical switch mounted below the stovetop having a first switch position and a second switch position, a pin slidably passing through an opening in the stovetop beneath the rim of the dish under the heating element in contact with the underside of the rim and biased against the rim with a pressure sufficient to lift the rim from the stovetop when no utensil is present on the heating element, but insufficient to lift the rim when a utensil is in place on the heating element; and means connecting said pin with the switch to operate the switch between first and second positions corresponding to the position of the pin when a utensil is present or absent from the heating element.
REFERENCES:
patent: 4334145 (1982-06-01), Norris, Sr.
patent: 4394565 (1983-07-01), Dills
patent: 4446455 (1984-05-01), Nashawaty
Coleman Kevin G.
Lipscher Bernard
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