DOOR LOCK Russian patent published in 2001 - IPC

FIELD: ironmongery. SUBSTANCE: door lock has combination mechanism, body accommodating inserts, blocking members in the form of balls from magnetically soft material, cap key with orientation magnets and conjugated with end face of combination mechanism and locking member. Installed in body of combination mechanism is spring-loaded head longitudinally moved and consisting of rod in the form of regular hexagon in cross-section having bore hole and recess, and passing through hexagonal hole of locking sleeve fixed in body, and flange made of magnetically permeable material whose external side has protrusions. Combination mechanism body has external flange in the form of geometric figure, for instance, trapezium, asymmetrical in the clear relative to one axis, and internal flange thrusted by head protrusions. Faces of head flange protrusions facing its axis are similar to configuration of body internal flange. Head rod and inserts tightly seated round it and being regular hexagons in cross-section are tightened by periphery by means of spring. Base of key is made in the form of figure similar in plan to shape of cutout of internal flange of combination mechanism body. EFFECT: higher reliability of lock. 6 dwg