Lockset security device

Details Lockset security device Lockset security device

1987-12-28

1989-05-09

Wolfe, Robert L.

Locks

Operating mechanism

Key

70211, E05B 1300

Patent

active

048277452

ABSTRACT:
A device which enhances the security of cylinder type locking devices by mechanically preventing the rotary unlocking motion even after keys or other security devices or methods have been activated and the locking device would otherwise be released.

REFERENCES:
patent: 2463195 (1949-03-01), Mungan
patent: 3263462 (1966-08-01), Suroff
patent: 3826117 (1974-07-01), Racobs
patent: 3933014 (1976-01-01), Moses

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