Patent ID: 6725950
Filing Date: 2004-04-27
Classification: E21B

Abstract:
Drilling apparatus comprisinga frame suitable for attachment to a three-point hitch at the rear of a tractor, a boom pivotally connected at its proximal end to the frame, the boom being pivotable relative to the frame about a substantially horizontal pivot axis, an auger rotatably mounted to the boom at or near the distal end of the boom, a hydraulic cylinder connected between the boom and the frame, for pivoting the boom relative to the frame to thereby raise or lower the auger, wherein the boom comprises a pair of boom arms spaced laterally apart and connected by at least one crosspiece located intermediate the ends of each boom arm, each boom arm being an integrally formed unipartite angled arm which extends substantially from the proximal end to the distal end of the boom, and wherein the hydraulic cylinder is connected between the frame and the crosspiece, and is located wholly above the pivot axis.