DEVICE AND METHOD FOR INSTALLATION OF DEVICE FOR CLOSING OF KEYHOLE Russian patent published in 2001 - IPC

FIELD: locksmith's work, applicable for closing of keyhole. SUBSTANCE: keyhole has a body with at least one opening for the keyhole, and at least one opening in the form of a labyrinth and a damper with a hole installed for movement on the body surface. In addition it has a disk with catches and a cover; marks are made on the external peripheral surface of the disk, around the edges, and the disk by means of the catches is kinematically linked with the openings for the keylock, made in the body and damper, and installed for turning relative to the surface of the above openings, the catches are engageable with the labyrinth, and the cover is installed inside the body in the zone of the opening for the keyhole, and an opening for the keyhole and assembly holes are made in the cover. EFFECT: enhanced resistance to breaking-in. 4 cl, 4 dwg