Light sensitive control for toaster

Details Light sensitive control for toaster Light sensitive control for toaster

1996-08-19

1997-09-30

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219501, 219518, 219519, 219497, 219505, 99329R, H05B 102

Patent

active

056722885

ABSTRACT:
In a toaster, a system is constructed to vary the duration of the toasting cycle. An RC network provides an oscillating signal to a counter, which upon the required number of oscillations being counted, triggers a transistor switch. The switch energizes the main solenoid switch which in turn deactivates the heating elements of the toaster. The RC network of the system comprises a variable resistor which may be manually operated, a heat sensitive resistor, and a light sensitive resistor.

REFERENCES:
patent: 2631523 (1953-04-01), Olving
patent: 3062941 (1962-11-01), White
patent: 3449629 (1969-06-01), Wigert et al.
patent: 3603957 (1971-09-01), Merchant
patent: 3700933 (1972-10-01), Harkenride et al.
patent: 4369354 (1983-01-01), Goedecke et al.
patent: 4574801 (1986-03-01), Manes
patent: 4687909 (1987-08-01), Eichler et al.
patent: 4734553 (1988-03-01), Noda
patent: 4901506 (1990-02-01), Weyandt
patent: 5402708 (1995-04-01), Krasznai et al.

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