Miniature fluid drill

Claim 1

A DRILL COMPRISING, IN COMBINATION, AN ELONGATED OUTER TUBULAR HOUSING HAVING A REAR END AND A FORWARD END, SAID FORWARD END HAVING CONNECTING MEANS FOR RECEIVING THE REAR END OF A NOSE MEMBER, AN INNER ELONGATED TUBULAR MEMBER HAVING CONNECTING MEANS AT ITS REAR END FOR CONNECTING WITH THE SURROUNDING REAR END PORTION OF THE OUTER HOUSING, SAID INNER TUBULAR MEMBER BEING RADIALLY SPACED FROM THE SURROUNDING OUTER HOUSING THEREBY PROVIDING AN ANNULAR ELONGATED FLUID PRESSURE PASSAGE THEREBETWEEN, SAID INNER TUBULAR MEMBER HAVING ITS FORWARD END PROJECTING BEYOND SAID OUTER TUBULAR HOUSING AND SEATED IN THE NOSE MEMBER, MEANS DETACHABLY SECURING SAID INNER TUBULAR MEMBER TO THE REAR PORTION OF THE NOSE MEMBER AND A REAR THRUST BEARING RECEIVING RECESS, A THRUST BEARING RECEIVED IN THE THRUST BEARING RECEIVING RECESS, A FORWARD BEARING RECEIVED IN THE FORWARD END OF SAID INNER TUBULAR MEMBER AND SPACED FROM THE REAR BEARING, A DRILL SHAFT RECEIVED IN AND EXTENDING THROUGH SAID BEARINGS AND PROJECTING OUTWARDLY IN THE FORWARD END OF SAID NOSE MEMBER, AN ANNULAR TURBINE ROTOR FIXED TO SAID SHAFT INTERMEDIATE SAID BEARINGS AND HAVING THRUST ENGAGING PORTIONS THEREON FOR ENGAGING SAID BEARINGS, SAID FORWARD END OF THE INNER TUBULAR MEMBER HAVING A HIGH PRESSURE FLUID ORIFICE THERETHROUGH ADJACENT SAID TURBINE AND AN EXHAUST ORIFICE ANGULARLY SPACED THEREFROM, A PASSAGE MEANS IN THE INNER TUBULAR MEMBER CONNECTING THE HIGH PRESSURE ORIFICE WITH THE ANNULAR ELONGATED FLUID PRESSURE PASSAGE, A SECOND PASSAGE MEANS IN THE INNER TUBULAR MEMBER CONNECTING THE EXHAUST ORIFICE AND THE INNER CAVITY IN THE INNER TUBULAR MEMBER FOR EXHAUSTING FLUID FROM THE TURBINE.