CODE MAGNETOMECHANICAL LOCK Russian patent published in 2003 - IPC

FIELD: protective devices. SUBSTANCE: the lock has a body with a blind seat for the key, separator whose grooves accommodate movable magnetic elements rigidly coupled with non-ferromagnetic disks with a larger diameter installed on bearings for rotation on a fixed shaft and having a boss on one of the end sides engageable with a stop, and a guide groove on the lateral surface. The groove depth and width corresponds to the length and the thickness of the locking tongue made in the form of a rectangular plate rigidly coupled to the movable axle of the actuating device, having a lock washer serving as a stop for the return spring. The lock has also a spring-loaded two-lobed catch oriented by a non-metal rod passing through a hole made in the end side of one of its lobes, return spring and a spring-loaded rod coupled to a signal device. After the key is inserted, an insignificant longitudinal force directed into the depth of the seat should be applied. The key, resting on the spring-loaded rod, brings it into which by means of the two-lobe catch is transmitted to the lock washer. All locking tongues are unblocked, and notching prevents the longitudinal motion of the axle. While moving, it activates the actuating device. EFFECT: enhanced degree of secrecy of the lock and practical use of it as a safety device in various systems. 8 dwg