Three-position safety rocker

Details Three-position safety rocker Three-position safety rocker

1990-12-17

1992-03-10

Cusick, Ernest G.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator blocking device

200339, H01H 928, H01H 300

Patent

active

050951815

ABSTRACT:
A three-position electrical switch includes a rocker-type actuator adapted to be pivoted within a housing in opposite directions from a neutral position to first and second actuated positions in order to close first and second sets of switch contacts. The actuator carries a latch which normally engages the housing to prevent the actuator from being pivoted from its neutral position to either of its switch-closed positions. By manually pulling on the latch and then pivoting the actuator, the actuator may be moved to either of its switch-closed positions; the two-step operation protecting against accidental actuation of the switch. The actuator is frictionally maintained in one of its switch-closed positions but may be returned to its switch-open position by a simple single motion thereby enabling rapid opening of the switch under emergency conditions. The actuator is only momentarily held in its other switch-closed position and returns automatically therefrom as soon as it is manually released.

REFERENCES:
patent: 4215257 (1980-07-01), Repplinger
patent: 4947009 (1990-08-01), Osika et al.
patent: 5041706 (1991-08-01), Osika et al.
patent: 5045648 (1991-09-01), Fogleman, Sr.
patent: 5047598 (1991-09-01), Osika et al.

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