Magnetic captive key switch lock

Details Magnetic captive key switch lock Magnetic captive key switch lock

1974-09-10

1976-03-02

Craig, Jr., Albert G.

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

70276, 70339, 70358, 70389, H01H 2708, E05B 4700, E05B 3508

Patent

active

039419541

ABSTRACT:
A cylinder and plug type lock mechanism drivingly connects an authorized key to the actuator of a switch device and captivates the key when turning the switch on. A magnetic latch activated in the captive position of the key, prevents return of the key to its release position. A magnetic release element is positioned on the key against the lock mechanism to disengage the magnetic latch.

REFERENCES:
patent: 2856474 (1958-10-01), Norris
patent: 3518855 (1970-07-01), Wake
patent: 3639708 (1972-02-01), Wolniak et al.
patent: 3729964 (1973-05-01), Hsu

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