Electrical keylock switch

Details Electrical keylock switch Electrical keylock switch

1980-01-16

1981-08-11

Little, Willis

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

H01H 2700

Patent

active

042836085

ABSTRACT:
The present invention relates to electrical switches which are incorporated into a keylock, and more particularly, to switches of the type which have a rotatable mechanism which turns with the key, and fixed electrical terminals at the end of the keylock remote from the keyslot. In this type of switch, the contact member consists of a short conductive rod in a retaining cup which has a boss on its. A coiled spring is positioned over the boss on its upper end, and its lower end is retained in a blind aperture in a receptacle in the keylock. The keylock has a pair of extending arms which clamp the base with the electrical terminals of the switch in a fixed relationship with respect to the outer housing of the keylock while the conductive rod and the retaining cup rotate with the lock mechanism. The terminals have heads which are spaced from the base, and the retaining cup has a thin rim which has a lip on it which is shaped to allow the base to be held onto the retaining cup when the cup is turned relative to the base so that the elongated conductive bar is positioned in the open switch position, thereby allowing the complete assembly to be handled as a separate unit.

REFERENCES:
patent: 3358093 (1967-12-01), Cryer
patent: 3639708 (1972-02-01), Wolniak et al.
patent: 3941954 (1976-03-01), Wintringham

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