DOOR LOCK Russian patent published in 2001 - IPC

FIELD: door locks. SUBSTANCE: the door lock has a toothed clamp hinge-joined to the door, locking bar with a groove for the clamp, clamp retainer in the form of a hinge-joined lever and a combination mechanism. The combination mechanism is made as a cylinder, and the clamp is hinge- joined to the combination mechanism and provided with a second tooth for engagement with an additional locking bar rigidly attached to the door, the clamp retainer is installed on the door and is engaged with the stop cutout made on the clamp; the rotary cylinder of the combination mechanism is provided with a dog with a pin rigidly fastened to it for engagement with the retainer lever, and the lock is provided with a device for ensuring the sequence of engagement of the rotary cylinder of the combination mechanism respectively with the retainer lever and with the clamp in the process of unlocking. EFFECT: enhanced degree of protection against burglary. 4 cl, 2 dwg