SECRET LOCK WITH DOUBLE SCHEME OF CODING FOR DOORS AND GATES Russian patent published in 2010 - IPC E05B35/10 E05B35/08 

FIELD: construction.

SUBSTANCE: invention relates to hardware and may be used to lock doors and gates. Secret lock with double scheme of coding comprises body with cover, bolt, spring latch, pack of levels with slots, stop pin, recording element, the main master-key with bits and passkey. Recording element interacts with bolt plate and at least one of levels. Level matches bit of master-key, which differs it from the passkey. Recoding element is adjusted for displacement between active position and inactive position. In active position passkey may be used. In inactive position the possibility to use passkey is automatically blocked by the third closing turn of master-key. Recoding element may have facility for resetting its active position.

EFFECT: possibility is achieved for multiple blocking and deblocking of passkeys.

6 cl, 13 dwg