SECRECY MECHANISM FOR LOCK Russian patent published in 2004 - IPC

FIELD: ironmongery, particularly locks.

SUBSTANCE: secrecy mechanism comprises body with outer flange shaped as geometric figure non-symmetric to one axis thereof and inner flanges, divider, blocking members of m-metal, end key with orienting magnets and base with shape mating to that of cut made in inner body flange. Cup of magneto-impermeable material is inserted in body. Bosses are formed on inner side body surface. Cup having divider inserted inside cup has chamfers facing to body flange and mating to bosses in shape. Cup may move in longitudinal direction and rotate about its axis. Divider orifices are shielded from cup side by discs of magneto-impermeable material. Disc squares are equal to or exceeding that of orifices. Mechanism has immovable matrix with code holes. Arranged in holes are pins of spring-loaded puller of blocking members kinematically connected to locking means bar.

EFFECT: improved protection against lock cracking.

3 dwg