COMBINATION LOCK Russian patent published in 1999 - IPC

FIELD: combination locks. SUBSTANCE: combination lock has body accommodating shaft rigidly connected to body; dialing disk and locking disc connected with locking member; interlocking means; spring-loaded control handle installed coaxially to shaft for its turning and motion along it. Partition with recesses for conjugation with dialing disk is made in body parallel to its front and rear covers. Dialing disk is made in the form of rotating drum of revolver type for motion along shaft. Located in drum are radial holes in which coding devices are installed which made in the form of coaxial cylinders. External cylinder of coding device is spring-loaded and has through hole in which internal cylinder is installed. In this case, installed from one end of external cylinder are stems engageable with body partition recesses, and from the other end, pins. Internal cylinder one end has hole for key, while the other, has radial recesses for engagement with pins of external cylinder. Locking disk has through recesses in the form of Archimedean spiral and recesses for control handle. Locking member is made in the form of ties with bore and stems rigidly secured in ties. Stems are engageable with Archimedean spiral of locking disk. Interlocking means is made in the form of plate installed in recesses of ties for motion along shaft with spring-loaded bushings rigidly connected with plate. Control handle has coaxial bushings. One end of external bushing has recess and stems for conjugation with dialing and locking disks, respectively. The other end of bushing has members spring-loading the bushing. Internal bushing is rigidly installed on control handle for engagement with external bushing by means of stem. In addition, rear and front covers and body partition and also interlocking means and locking disk have holes coaxial to hole for key in internal cylinder of coding device. EFFECT: higher degree of lock secrecy, increased operating reliability. 4 dwg