Tool for turning bolt

Abstract

Abstract PURPOSE: To simplify the coupling work by forming the bolt head coupling section of a tool into the turnable state within a prescribed angle range while it is coupled with a bolt head. CONSTITUTION: When the bolt head coupling section 11 of a chisel wrench 1A is coupled with a bolt head 21, the wrench 1A is made the turnable state within the angle range (angle (d)= about 30°) from the position where the first coupling face 13 of the ridge-like projection 12 of the wrench 1A is coupled with one of the right and left end portions of single plane sections 22a, 22b on the side face of the bolt head 21 to the position where the second coupling face 14 is coupled with the other end portion of the bolt head 21. The bolt head coupling section 11 can be freely coupled with the bolt head 21 within the angle range that the first and second coupling faces 13, 14 are coupled with the right and left end portions of the side face of the bolt head 21, thereby the coupling work can be simply conducted. COPYRIGHT: (C)1989,JPO

Inventors

• 👤 Hideo Yamamoto

Bibliographic Details