发明申请
US20120039663A1 BALLPOINT PEN TIP, BALLPOINT PEN REFILL, BALLPOINT PEN, AND METHOD OF MANUFACTURING BALLPOINT PEN TIP
失效
BALLPOINT PEN TIP，BALLPOINT PEN REFILL，BALLPOINT PEN，AND METHOD OF MANUFACTURING BALLPOINT PEN TIP
- 专利标题： BALLPOINT PEN TIP, BALLPOINT PEN REFILL, BALLPOINT PEN, AND METHOD OF MANUFACTURING BALLPOINT PEN TIP
- 专利标题（中）： BALLPOINT PEN TIP，BALLPOINT PEN REFILL，BALLPOINT PEN，AND METHOD OF MANUFACTURING BALLPOINT PEN TIP
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申请号： US13254052申请日： 2010-03-10
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公开(公告)号： US20120039663A1公开(公告)日： 2012-02-16
- 发明人: Yoshihide Ishii
- 申请人： Yoshihide Ishii
- 申请人地址： JP Tokyo
- 专利权人： MITSUBISHI PENCIL CO., LTD.
- 当前专利权人： MITSUBISHI PENCIL CO., LTD.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2009-056468 20090310
- 国际申请： PCT/JP2010/053952 WO 20100310
- 主分类号： B43K1/08
- IPC分类号： B43K1/08 ; B23P17/00 ; B43K7/10
摘要：
Provided are a ballpoint pen tip which can, even if ink having properties which assures that the amount of supply of the ink to the pen tip by shear of a writing ball is sufficient is adopted, prevent partially faint written traces from occurring and provide smooth writing, a ballpoint pen refill, a ballpoint pen, and a method of manufacturing a ballpoint pen tip. A triangular pyramid-shaped recess (42) gradually tapered toward an ink guide hole (36) is provided in the bottom of a ball housing (31), and troughs (44) formed in the recess (42) are utilized as ink reservoirs and ink paths. Because the troughs (44) have sufficient length, width, and depth, the amount of containment of the ink and the amount of supply of the ink are increased. Also, even if ink which is supplied to the pen point mainly by shear of a writing ball (2A) is adopted, the supply of the ink to the pen point is not interrupted, the occurrence of partially faint written traces of ink is sufficiently prevented, and friction between the writing ball and a ball receiving seat surface can be reduced.
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