Removable key off-lock switch having improved locking actuator

Details Removable key off-lock switch having improved locking actuator Removable key off-lock switch having improved locking actuator

1987-10-27

1988-08-30

Luebke, Renee S.

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

200339, H01H 2700

Patent

active

047678950

ABSTRACT:
An actuator pivotally mounted within a switch housing has cantilevered side members positioned in blocking alignment with projections on interior side surfaces of the housing to prevent movement of the actuator from an OFF position to an ON position. A removable operator has depending key portions which deflect the cantilevered side members inwardly to clear the projections when the operator is assembled to the actuator. The cantilevered side members engage inner surfaces of the projections when the operator is removed with the actuator in the ON position, permitting movement to the OFF position wherein the cantilevered side members return to the blocking position. A compression spring may be disposed between distal ends of the cantilevered side members to provide additional outward bias to the side members.

REFERENCES:
patent: Re30273 (1980-05-01), Grebner et al.
patent: 3632914 (1972-01-01), Osika
patent: 3678229 (1972-07-01), Osika
patent: 3906176 (1975-09-01), Carlson
patent: 4168416 (1979-09-01), Josemans
patent: 4174472 (1979-11-01), Josemans
patent: 4230917 (1980-10-01), Osika
patent: 4291207 (1981-09-01), Reinke et al.
patent: 4345121 (1982-08-01), Tenner
patent: 4440994 (1984-04-01), Nat

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