| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a removable tool of a fastening member capable of surely removing the fastening member by a simple structure and by a simple operation, and usable even in a narrow place. <P>SOLUTION: In the removal tool used for removing the fastening member including a female screw such as a nut, and including a fitting cylinder fittable to an outer periphery of the fastening member, and a rotating operation part formed integrally with the fitting cylinder for rotating the fitting cylinder with respect to the fastening member, the fitting cylinder includes, at its inner wall, a reverse thread cutting die including a plurality of cutting edges for advancing the fastening member into the fitting cylinder while forming a reverse thread in a direction opposite to the female screw at the outer periphery of the fastening member, a pore diameter dimension of the fitting cylinder formed of flanks of the plurality of cutting edges forms a tapered shape diminished from an opening side into which the fastening member advances toward a side opposite thereto, and the reverse thread cutting die includes an abutting part for restricting the advance of the fastening member into the fitting cylinder at a predetermined position. <P>COPYRIGHT: (C)2013,JPO&INPIT |
