Locks – Operating mechanism – Key
Patent
1984-07-02
1986-09-16
Wolfe, Robert L.
Locks
Operating mechanism
Key
70360, 70417, 70418, E05B 6300
Patent
active
046114777
ABSTRACT:
A tamper resistant reciprocal cylinder lock comprising mutually engageable structures on the lock sleeve and bolt keeper having the capacity to increase the resistance of the lock sleeve forward portion from disengagement with the lock sleeve inner portion when the lock and keeper mechanism in a locked position are under physical attack.
REFERENCES:
patent: 3538725 (1970-11-01), Guenther et al.
patent: 3921422 (1975-11-01), Walters
patent: 4083211 (1978-04-01), Scherbing
patent: 4380915 (1983-04-01), Kincaid
Arlasky David
Wolfe Robert L.
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