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

FIELD: locksmith's work, concerns the method for closing the keyhole consisting in movement of a material body in the zone of the keyhole, the moved material body is additionally used as a locking bolt or locking device for the door. SUBSTANCE: the device for closing the keyhole has a body with holes, shutter installed for movement on the body surface, and fasteners. In addition it is provided with bushes, the bushes are installed in the body holes, and the fasteners, having axles, are installed in the bushes for turning, the end sections of the fasteners are made in the form of handles with marks, and one face is made on the lateral surface of each axle opposite the mark, a slot is made on each bush that is engaged with the shutter, and cavities are made on the peripheral sections that are engaged with the axles. EFFECT: enhanced resistance to burglary. 2 cl, 3 dwg