Safes – bank protection – or a related device – Wall and panel structures – closures and closure adjuncts – Closures
Patent
1979-08-23
1981-01-20
Machado, Reinaldo P.
Safes, bank protection, or a related device
Wall and panel structures, closures and closure adjuncts
Closures
70 15, E05G 104
Patent
active
042455677
ABSTRACT:
A safe door bolt is rendered substantially punch-proof by providing as a part of the bolt a hardened plug. This plug has a tapered portion positioned to cause radial expansion of material forming part of the bolt in response to an end blow delivered to the bolt attempting to retract the same into the door. Thus, any force in the form of a sudden axial blow to the end of the door bolt by a burglar will result in the radial expansion of material of the bolt to block its retraction into the guide bore of the safe door thereby frustrating burglary attempts.
REFERENCES:
patent: 2947160 (1960-08-01), Wolters
patent: 3104538 (1963-09-01), Roberts et al.
patent: 3158017 (1964-11-01), Guze, Jr.
Machado Reinaldo P.
Pastoriza Ralph B.
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