초록 ▼

An insert for thread repair having an interior thread and a specially formed exterior thread which both precludes upheaval between sides of the cracked material on opposite sides of the crack and draws the crack together, radially inward towards the center of the insert. The insert may include a dri

An insert for thread repair having an interior thread and a specially formed exterior thread which both precludes upheaval between sides of the cracked material on opposite sides of the crack and draws the crack together, radially inward towards the center of the insert. The insert may include a driving head, either solid or having a central hollow and may include a frangible neck to dissociate the head from the insert.

대표청구항 ▼

[ I claim:] [1.]1. A thread repair insert comprising in combination:a sleeve having an interior thread and an exterior thread adapted to be threaded into a hole having a thread pitch complemental to said exterior thread andsaid exterior thread including means to direct a force on said thread pitch r

[ I claim:] [1.]1. A thread repair insert comprising in combination:a sleeve having an interior thread and an exterior thread adapted to be threaded into a hole having a thread pitch complemental to said exterior thread andsaid exterior thread including means to direct a force on said thread pitch radially inward towards an axially longitudinal center line of said sleeve.