PORTABLE SEISMIC SHOTHOLE DRILLING SYSTEM

摘要

A portable apparatus for creating holes in rock. A rock drill connected to a compressed air supply is engaged with a connector attached between the roc k drill and a rock bit. The connector has a substantially tubular shaft for transporting compressed air from the air supply to the rock bit. The tubular shaft uniquely maximizes the air available for removing rock cuttings and minimize s the possibility of rock bit sticking in the rock hole. The invention is particularly suited to seismic shothole drilling requiring portable equipment operable by a single person.