FIELD: construction industry.
SUBSTANCE: invention refers to a group of safety locks with two-bit key meant for dwelling doors, etc. Lock consists of two-bit key locking mechanism with many plate-like key bits activated after profiled outlines of two flag-shaped protrusions provided on key body touch them. Lock also includes cylindrical locking mechanism with possibility of cylinder turning around axis coinciding with key turning axis provided in two-bit key locking mechanism. Locking mechanism with cylinder being turned is designed for being brought into operation with the above lock together with bringing of two-bit key locking mechanism into operation.
EFFECT: improving degree of lock protection from housebreaking.
10 cl, 8 dwg
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