| 摘要 |
PROBLEM TO BE SOLVED: To dispense with a spring for giving energizing force of rotation to a rotating cylinder by exposing a knob which is larger than an axial groove formed integrally with a core receiver on an axial cylinder from inside a rotary cylinder of a slender ball-point pen. SOLUTION: A hole wherein it is larger than the knob 3b and the knob can pass through, is formed at a front edge of an introducing groove 2a of the rotary cylinder 2 and at a front edge of the axial groove 1a. After passing the knob on a knocking rod through by making two holes conform to each other, sinking of the knob once exposed on the axial cylinder is prevented by retreating the rotary cylinder. Further, by making a front end of an introducing groove small bow shaped 2b to rotate the cylinder by advance of the knocking rod without the spring. COPYRIGHT: (C)2005,JPO&NCIPI
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