Hardenable lock

Details Hardenable lock Hardenable lock

1974-10-17

1976-04-27

Wolfe, Robert L.

Locks

Operating mechanism

Key

70 52, E05B 6704

Patent

active

039525651

ABSTRACT:
A maximum security padlock of the type having a monolithic lock body or case with a plurality of shackle and lock-receiving bores therein is made of a compressed and sintered powder metal alloy of an austenitic stainless steel. As a consequence of this unique material, the lock body is readily made with most or all of the bores formed in compressing the powder metal. While the resulting sintered lock body is relatively, substantially, softer than a conventional lock body and the shackle, when an attempt is made to saw or otherwise cut through the body the stainless steel work-hardens to resist and slow down further cutting. Improvements in the lock mechanism augment the characteristics provided by powder metal fabrication.

REFERENCES:
patent: 3789639 (1974-02-01), Canter

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