Patent ID: 6588305
Filing Date: 2003-07-08
Classification: B25B

Abstract:
A notch-forming extraction tool for removing helically coiled wire inserts having a series of convolutions including a trailing end from a tapped hole in a parent material, said tool comprising:a mandrel having a first end opposite a second end, said second end including an axial center, a leading portion and a tooth extending laterally from said leading portion, said tooth having a shoulder portion operable to form a notch in said trailing end of said wire insert and contract the series of coils about said leading portion to a diameter less than a diameter of the tapped hole, wherein said wire insert can be extracted from said tapped hole without damaging said parent material; and a handle connected to said first end of said mandrel, said handle operable to drive said mandrel to form the notch and rotate said wire insert when said tooth engages said wire insert.