LOCK Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: device has bush with blind hole and inner ring groove, and rod with head and touching member, which is designed as cone with external ring groove formed by cone recess towards touching member. Inner ring groove of bush contains spring ring for engaging into ring groove of rod. Cone recess on rod has additional reverse code which forms groove depth of at least thickness of spring ring. Depth of inner ring groove in bush is less than half of ring thickness. Length of ring is less than length of circumference of blind hole in bush. EFFECT: increased reliability. 3 cl, 5 dwg