ANCHOR LOCK Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: lock is made up of wedge pair with mutually parallel internal surfaces. One wedge is made on end of anchor rod located in bore-hole, and second is side wedge. Anchor rod has recess of depth equal to thickness of anchor rod. Bottom of this recess is continuation of wedge surface of anchor rod, and portion of side wedge can enter aforesaid recess. Conjugating surfaces of anchor lock components are provided with protrusions for limiting their relative displacement. EFFECT: high efficiency. 1 cl, 5 dwg