Tamper resistant combination lock

Locks – Portable – Padlocks

Patent

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Details

70 68, 70 23, E05B 3716

Patent

active

056408609

ABSTRACT:
A tamper resistant combination lock including a housing having a through bore receiving a locking plunger with a plurality of integral spaced obstructions thereon, the housing having a plurality of transverse slots each receiving one of two identical blocking slides that snap between three distinct positions, one passing the obstructions and plunger, and two blocking the obstructions and plunger. Lock picking is minimized by flexible fingers in the slides that engage the plunger obstructions when the slides are in the plunger passing position to simulate the slide blocking positions as the lock picker tugs the plunger.

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patent: 4862714 (1989-09-01), Taylor et al.
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