Key operable safety switch

Details Key operable safety switch Key operable safety switch

1994-02-01

1995-05-30

Recla, Henry J.

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

200 4304, 200 4308, 200533, 200573, 2003023, H01H 2700

Patent

active

054203856

ABSTRACT:
A key operable safety switch includes a housing and a switch operator that is operated by an actuator. A slot in the housing receives the actuator. A plurality of discs independently rotatably mounted on an axle, the discs each having a radial recess aligned with the slot and cam-like control grooves, form a roller. The actuator has a coded pattern or actuation portions corresponding to each disc radial recess. Insertion of the actuator engages the actuation portions with the radial recesses causing the discs to be rotated as a whole. A pin mounted to the switch operator and transversely disposed in the control grooves is axially displaced by rotation of the discs. The switch operator is displaced a predetermined stroke to actuate the switch.

REFERENCES:
patent: 4395608 (1983-07-01), Eicker et al.
patent: 4658102 (1987-04-01), Seim et al.
patent: 4963706 (1990-10-01), Mohtasham

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