Electricity: circuit makers and breakers – Plural switches control single circuit
Patent
1980-01-11
1981-09-22
Little, Willis
Electricity: circuit makers and breakers
Plural switches control single circuit
200325, 200332, 200335, 200339, H01H 2700
Patent
active
042912075
ABSTRACT:
A unitary, self-enclosed electric switch having a pivotally mounted subactuator (6) that actuates the contacts (18 ) and carries a locking element (24) that normally catches on the switch housing (4k) to lock the switch in "off" position. A combined actuator and lock release member (8) is snap-in mounted on the subactuator and has push-to-unlock means (8b, 8c, 22) that releases the off-lock to allow pivotal actuation of this actuator and the subactuator in unison from "off" to "on" position. This actuator is normally spring-biased (22) into ineffective position from which it must be pushed in to unlock the switch and is removable to prevent unauthorized use of the switch. The subactuator has an upward extension (6h) that serves as a handle to enable the switch to be moved from "on" to "off" position even when the actuator has been removed, this extension serving also to trap the actuator bias spring (22) to retain it in place when the actuator is removed. The off-lock shown could be changed to an on-lock by rearranging the contacts or reversing the locking element.
REFERENCES:
patent: 3205320 (1965-09-01), Soscia
patent: 3435169 (1969-03-01), Bienwald et al.
patent: 3497646 (1970-02-01), Pollak
patent: 3681556 (1972-08-01), Qsika
patent: 3761664 (1973-09-01), Kodaira
Reinke William L.
Stearley John W.
Autio W. A.
Eaton Corporation
Little Willis
McCloskey R. J.
Rather H.
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