发明名称 |
BALLPOINT PEN TIP, MANUFACTURING METHOD THEREFOR, AND BALLPOINT PEN USING THE SAME |
摘要 |
The present invention provides a ballpoint pen tip including a metallic pipe having a plurality of inwardly projecting portions at a neighborhood of a front end portion of the pipe at regular intervals, and a front end edge portion at a front end of the pipe, and a ball rotatably held between the front end edge portion and the plurality of inwardly projecting portions, wherein the pipe satisfies a relation of A/T where A is an outer diameter of the ball and T is a thickness of the pipe.
|
申请公布号 |
CA2147916(A1) |
申请公布日期 |
1995.10.30 |
申请号 |
CA19952147916 |
申请日期 |
1995.04.26 |
申请人 |
PILOT INK CO., LTD. (THE) |
发明人 |
ANDO, MASASHI;SEKINE, NOBUO;KONDO, MASAHIRO;ASAMI, HIDEAKI;MATSUBARA, NOBUO |
分类号 |
B43K1/08;(IPC1-7):B43K7/00 |
主分类号 |
B43K1/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|