Patent ID: 9062428
Filing Date: 2015-06-23
Classification: E02B,E02D,E03F,E21B,Y02A

Abstract:
1. A drill rig for simultaneously drilling successive adjacent sets of three spaced apart holes in the ground including: a frame mounted for vertical movement on an upright support; said upright support mounted on a carriage for traveling movement along a path along the ground to be able to be repositionable at adjacent locations along said path to be able to drill a series of successive hole sets at a respective one of said locations along said path; three drill holders mounted on said frame which are arranged in a triangular pattern in which two of the three drill holders are spaced apart but aligned with each other in a direction crossing said path and are each spaced to a respective opposite side of a third intermediate drill holder located between said two aligned drill holders but are offset therefrom in a direction along said path of travel of said carriage, each drill holder adapted to receive a respective drill bit projecting downwardly therefrom and rotated by a drill drive to be able to simultaneously drill each set of three spaced apart holes in the ground beneath said frame.