Locking mechanism for a money box assembly having a fusible cam

Details Locking mechanism for a money box assembly having a fusible cam Locking mechanism for a money box assembly having a fusible cam

1981-01-09

1983-08-09

Wolfe, Robert L.

Locks

Attack-actuated defeating mechanisms

70422, E05B 6300

Patent

active

043971652

ABSTRACT:
The present invention is directed to an improved locking mechanism for a money box assembly. The mechanism includes a fusible plastic cam which acts as a transmission member operatively connecting the lock to locking bolts. The bolts engage with the wall of a housing to which the money box assembly is mounted. The cam is formed of a material having a melting temperature substantially lower than the melting temperature of the material forming the lock. Any attempt to gain access to the money box by melting the lock and then operating the cam by a screwdriver or other tool will be frustrated since the drive cam linkage will have been destroyed or rendered inoperative by the heat thereby breaking the link between the lock and the locking bolts so that the money box assembly remains locked in place.

REFERENCES:
patent: 3897828 (1975-08-01), Glover

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