发明名称 |
BALLPOINT PEN AND CAP THEREFOR |
摘要 |
The present invention provides the ballpoint pen that precludes the possibility of the pipe portion bending at the joint thereof can be provided even if the outer diameter D is small. In the ballpoint pen having a ballpoint pen tip at a front end thereof, the ballpoint pen tip rotatably accommodating a ball at a front end of a pipe made of metal, an outwardly projecting pipe portion having a uniform thickness throughout the length thereof is arranged at a front end of the ballpoint pen tip, and if a length of the pipe portion is L, an outer diameter of the pipe portion is D, a relational expression "L/D ? 4.0 is satisfied.
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申请公布号 |
CA2138719(A1) |
申请公布日期 |
1995.06.23 |
申请号 |
CA19942138719 |
申请日期 |
1994.12.21 |
申请人 |
PILOT INK CO., LTD. (THE) |
发明人 |
SEKINE, NOBUO;YOKOSUKA, TAKEHIKO;ANDOH, MASASHI;OKAWARA, YOSHIAKI |
分类号 |
B43K1/08;(IPC1-7):B43K7/00 |
主分类号 |
B43K1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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