Patent ID: 7290968
Filing Date: 2007-11-06
Classification: B23B,Y10T

Abstract:
1. An extension fixture, comprising: a shank having an inside formed with a passage having a first end formed with a mounting recess and a second end formed with an engaging recess; a pull rod rotatably mounted in the passage of the shank and having a first end formed with a rotation head rotatably mounted in the mounting recess of the shank and a second end formed with an outer thread extended into the engaging recess of the shank; a clamping sleeve movably mounted in the engaging recess of the shank and having a first end formed with a screw bore screwed onto the outer thread of the pull rod and a second end formed with a clamping recess for clamping a turning tool; a fixing member rotatably and movably mounted in the mounting recess of the shank and rested on the rotation head of the pull rod; wherein the mounting recess of the shank has a wall formed with an inner thread, and the fixing member has an outer wall formed with an outer thread screwed into the inner thread of the mounting recess of the shank.