Key switch

Details Key switch Key switch

1988-06-03

1990-01-02

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200 4308, H01H 2706

Patent

active

048914770

ABSTRACT:
A key switch that includes both a locking mechanism and a switch mechanism that are separately replaceably coupled together so that either the locking mechanism or the switching mechanism may be individually replaced. The locking mechanism includes a hollow outer cyinder, a hollow inner cylinder rotatably mounted within the interior of the outer cylinder and a notched bolt extending from the rear end portion of the inner cylinder. The switch mechanism includes a case, a cam accommodated therein, and two pairs of contact terminals which are alternately operable by the cam. The cam of the switch mechanism is fitted on the notched bolt of the locking mechanism.

REFERENCES:
patent: 2623959 (1952-12-01), Jarrett
patent: 3160720 (1964-12-01), Faulkner
patent: 3917919 (1975-11-01), Tahara
patent: 4635035 (1987-01-01), Ratzabi
patent: 4689451 (1987-08-01), Resh
patent: 4689456 (1987-08-01), Martin

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