High security lock

Details High security lock High security lock

1983-11-07

1986-04-08

Wolfe, Robert L.

Locks

Operating mechanism

Key

70364A, E05B 6300

Patent

active

045804257

ABSTRACT:
A pick resistant lock includes a secondary hole in the cylinder which is turned into alignment with a driver pin as the lock is being opened. A shuttle pin slidably positioned in the secondary bore prevents the driver pin from entering the secondary bore when a key bit is inserted in the key way. However, when there is no key bit in the key way, the driver pin will drop into the secondary bore and prevent opening the lock. Two embodiments of the lock also include features to prevent the driver pin from being pushed out of the secondary bore without disassembling the lock. In one of these embodiments, the shuttle pin is locked against movement by a tertiary pin, and in another embodiment, the service pin blocks access to the shuttle pin to accomplish this result.

REFERENCES:
patent: 1707922 (1929-04-01), Pepper
patent: 2298698 (1942-10-01), Hofmann
patent: 2977786 (1961-04-01), Kendrick et al.
patent: 3195330 (1965-07-01), Bauer
patent: 3260082 (1966-07-01), Bodek et al.
patent: 3541822 (1970-11-01), Murphy

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