CODE MECHANICAL LOCK Russian patent published in 1995 - IPC

FIELD: device for locking doors. SUBSTANCE: lock 4 has locking mechanism formed as movable carriage, which has code plank with conical step and resetting plank. Planks are pivotally interconnected. Resetting plank is engageable with toothed rack and code plank shoulder is engageable with segment cam, which prevents cross-bar from movement. Pushing pins disposed in predetermined code combination on inner part of keys are engageable with conical step of code plank or with resetting plank. When code is set up in right succession, pushing pins drive carriage with segment cam to cause cam to leave cross-bar slot. EFFECT: increased efficiency, enhanced reliability in operation and simplified construction. 7 dwg