| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a groove digging cutter capable of substantially improving efficiency of groove digging work. <P>SOLUTION: The groove digging cutter includes: a metallic body part; a handle part fixed at the upper part of the body part; a blade having a turning fulcrum part that is arranged or formed at or near its roughly center part so as to be a fulcrum when it turns and composed of a hole, a recess or a projection part, and a screw insertion hole arranged at or near an upper end on the opposite side of the blade tip; a turning support part composed of a projection part, a hole or a recess to be inserted to the turning fulcrum part of the blade or to insert the turning fulcrum part of the blade; an oblong hole whose plane is formed in a curve shape so as to face the turning track of the screw insertion hole when the blade is turned for a predetermined range centering around the turning fulcrum part of the blade, and to which a screw can be inserted; and a fixing part composed of a screw component for fixing the blade to the body part by being inserted to the screw insertion hole and the oblong hole and tightened. <P>COPYRIGHT: (C)2012,JPO&INPIT |
