| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that as a tool for fastening or loosening a nut or the like, a wrench having a circular mouth part is fitted only from an axial direction of the nut or the like, thereby, the mouth part passes by a hexagonal part, such as the nut, when the mouth part is fitted to the nut or the like, or the mouth part fastens the nut or the like even when it touches only a part of the hexagonal part. <P>SOLUTION: In a side drive type wrench which fits the mouth part to a bolt or nut from the axial direction and is rotated from the side, the mouth part has a through-hole on an inner periphery and places hexagonal holes of the same size on both ends at different angles on the same axis line. <P>COPYRIGHT: (C)2013,JPO&INPIT |
