INTERLOCK ANCHOR ROD FOR CONCRETE AND A BIT OF DRILL FOR ENLARGING THE EARTHEN HOLE

摘要

Said interlock anchor rod comprises a rod (5) and a wedge (6). Said rod (5) is a metal rod, which has notches (1-8) at the end thereof. Said bit of drill comprises an anchor rod (2), head of chisel (3) and a base (4). Said head of chisel (3) is formed of two petals. This invention is realized by interlocking the anchor rod and the bit of drill.