KEYLESS CODE LOCK Russian patent published in 1995 - IPC

FIELD: household equipment production. SUBSTANCE: bicycle theft prevention lock has cylindrical body with axial hole, perpendicularly to which canal is made, in which fixing stop, capable to make axial motion, is located. Besides, lock has at least one code disk with holder and hole. Disk is mounted with capability to rotate in respect to body and holder has groove for stop passing. Body butt and fixing stop have ring-type recesses, in which code disk holder is located, Width of recess exceeds thickness of code disk holder, in which part of length of concentric circumference has uniformly spaced holes. Body has hole to locate ratchet, made in the form of spring-loaded ball to be engaged with one of holes of code disk. The latter is engaged with additional disk with holder, that embraces body, using roller. EFFECT: increased reliability of protection. 2 dwg