DOUBLE-SIDED CODE LOCK Russian patent published in 2011 - IPC E05B37/12 

FIELD: construction.

SUBSTANCE: code lock comprises a body, a crossbar, code elements made in the form of discs that rotate around their axes and fixed by spring-loaded balls, combs, a rotary disc, a sprocket, code handles, crossbar handles, fastening screws that ensure code replacement. Code elements made in the form of discs, together with deepened slots, providing for unlocking of the crossbar, are equipped with false slots, being a facility of protection against unauthorised code guessing. The rotary disc and the sprocket rigidly connected to it are made with the possibility of simultaneous vertical movement of combs and reciprocal displacement of the crossbar as all comb teeth match deepened slots of code elements. Holes in axes of internal code handles are displaced relative to each other by 36°, which makes it possible to easily change the code, having turned one or several handles by 180° or switched places of one or more handles. If fastening screws are in vertical position coaxially with deepened slots and the screw head is in the upper position, the crossbar is unlocked. The lock is made as capable of closing doors both from outside and inside.

EFFECT: high extent of secrecy, simple design, recoding without lock disassembly, and elimination of the possibility of unauthorised code guessing.

7 dwg