ANCHOR LOCK Russian patent published in 2001 - IPC

FIELD: mining; applicable in roof bolting of mine workings. SUBSTANCE: anchor lock including anchor proper with clamping lock sections has two nuts, one of which is connected to anchor with left-hand thread and the other, with right-hand thread of different diameters. Nuts are shaped with counter bevels between which congruent nut and bushing are installed. The latter is made of easily deformed flexible material, rubber, for instance. Geometric axis of threaded connections is eccentric to geometric axis of nuts. EFFECT: reduced time for anchor installation, improved labor conditions, higher reliability of anchor fastening and possibility of anchor repeated use. 1 dwg