Electricity: circuit makers and breakers – Switch activation inhibitor – Combined with connector coupling
Patent
1976-08-18
1978-09-05
Engle, Samuel W.
Electricity: circuit makers and breakers
Switch activation inhibitor
Combined with connector coupling
176 45, 70278, H01H 2706
Patent
active
041122674
ABSTRACT:
A coded switching device having a plurality of actuator dial knobs will, n set to a predetermined combination, provide electrical continuity between terminals on the device. Setting the dial knobs to another predetermined combination will enable the combination to be changed. The device consists of a number of stations, each comprising an actuator, a switch, and a detent mechanism, equal to the number of digits desired in the combination. Each switch is wired such that only one position will provide continuity through that switch. The switch rotors are connected to the actuators in a manner which will allow their angular relationship, and hence, the particular combination which will close all switches, to be changed by withdrawing the dial knobs in a direction outward from the device. A grooved rod extending transverse to the actuators gangs all of the actuators together for this combination change movement. Additionally, this rod restrains the switch rotors from angular rotation until the dial knobs are depressed and the actuators re-engaged with the switches.
REFERENCES:
patent: 1315182 (1919-09-01), Davis
patent: 1519303 (1924-12-01), Gross et al.
patent: 2806911 (1957-09-01), Harty et al.
patent: 3723678 (1973-03-01), Heap
Card, Jr. Harold H.
Edelberg Nathan
Engle Samuel W.
Erkkila A. Victor
Palo Ralph
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