Check-actuated control mechanisms – Including part locked by detent and released by check – And means to impart thrust to check to unlock part
Patent
1989-04-27
1990-10-23
Bartuska, F. J.
Check-actuated control mechanisms
Including part locked by detent and released by check
And means to impart thrust to check to unlock part
70369, G07F 1712
Patent
active
049644947
ABSTRACT:
A locking device consisting of a lock and a key-actuated lock cylinder, in which the lock cylinder can be removed from the bolt lock only by the use of a key. In order to make it possible for any removal of the lock cylinder to be noted, the invention discloses a separate removal key and a catch which drops upon the removal and prevents re-insertion of the lock cylinder.
REFERENCES:
patent: 1986676 (1935-01-01), Hurd
patent: 2011003 (1935-08-01), Liss
patent: 2145085 (1939-01-01), Heyer
patent: 3621965 (1971-11-01), Eicken
patent: 4572348 (1986-02-01), Eisermann et al.
Bartuska F. J.
Farber Martin A.
Schulte-Schlagbaum Aktiengesellschaft
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