Patent ID: 6840718

Claim:
A threaded hole finishing tool comprised of: a deburring tool for use in conjunction with a threading tap having spiral or helical flutes, said tap flutes each having a circumferentially rearward cutting edge and a circumferentially forward non-cutting edge, and said deburring tool being comprised of a cutter body having cutting members of a spiral or helical nature conforming to the spiral or helical nature of the flutes in said threading tap, said cutting members having following edges that are separated by inside surfaces which contact the flutes of the tap and allow the cutter body to axially move up and down along the tap's flutes and simultaneously rotate with the helical nature of the tap's flutes while not engaging the tap's cutting edges ( 28 ) and non-cutting edges ( 27 ), and while being resiliently held to said tap by means of a spring which urges said cutter body towards the cutting end of said tap.