Switch controller

Details Switch controller Switch controller

1977-04-25

1978-06-13

Tolin, Gerald P.

Electrical transmission or interconnection systems

Switching systems

Plural switches

307113, 200153C, 200 865, 200 6A, 200 5C, H01H 312

Patent

active

040951235

ABSTRACT:
A controller comprises a first and a second pushbutton each carrying a pair of actuator pins of different lengths, first and second normally open switches located below each of the actuator pins having a reduced length, and a first and a second normally closed switch located below each of the other actuator pins. When depressed, each pushbutton causes its pin of an increased length to actuate its associated switch initially and then causes the other pin to actuate its associated switch. When the first pushbutton is depressed, a first circuit including the first normally open switch and the second normally closed switch in series is completed, and when the second pushbutton is depressed, a second circuit including the first normally closed switch and the second normally open switch in series is completed. When neither pushbutton is depressed, the first and second normally open switches prevent either the first or the second circuit from being completed. When the both pushbuttons are depressed simultaneously, the first and second normally closed switches are opened, thus preventing the completion of both the first and the second circuits.

REFERENCES:
patent: 3482072 (1969-12-01), Taylor
patent: 3506795 (1970-04-01), Schmidt
patent: 3980848 (1976-09-01), Schulz
patent: 4045630 (1977-08-01), McCarthy

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