LOCK Russian patent published in 1998 - IPC

FIELD: locking hardware. SUBSTANCE: lock has body with recess, sleeve installed in body with possibility of rotation and having at least one longitudinal slot in its side surface. Also provided are spring-loaded locking disks with holes for key and which can rotate freely relative to sleeve axis. Arranged between disks without possibility of rotation are washers and pin for fixing sleeve relative to body. Outer flat surface of key and flat surfaces of holes in locking disks are located away from axis of rotation at distance equal to value of radius of cylindrical surfaces of key groove bottom. Aforesaid components allow for angle of outer flat surface of key and flat surface of groove bottom to be as large as 240 deg. One of extreme locking disks is rigidly installed in sleeve. EFFECT: higher efficiency. 8 dwg