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1. 发明授权

US5690442A Metal tip for ball-point pen 失效
标题翻译：圆珠笔金属针
公开(公告)号：US5690442A
公开(公告)日：1997-11-25
申请号：US573002
申请日：1995-12-15
申请人： Shinsuke Sato , Toshiaki Takayanagi , Toru Kitao , Masao Hashi
发明人： Shinsuke Sato , Toshiaki Takayanagi , Toru Kitao , Masao Hashi
IPC分类号： B43K1/08 , B43K7/10
CPC分类号： B43K1/08
摘要： This invention provides a metal tip for a ball-point pen, having an ink guide hole (2) formed at the center of the bottom surface of a ball holding portion (1) and radial grooves (3) arranged around the ink guide hole. The ink guide hole has a diameter 30 to 55% the diameter of a ball and a length 1.2 to 2 times the diameter of the ink guide hole. A cleaning tool, used for removing a flash which is formed during formation of the radial grooves (3) by cutting (broaching) and which projects into the ink guide hole (2), is set to have a diameter 70 to 97% the diameter of the ink guide hole, so that only a base portion of the projecting flash is left.
摘要翻译：本发明提供了一种用于圆珠笔的金属端头，其具有形成在球保持部分（1）的底表面的中心处的墨水引导孔（2）和布置在墨水引导孔周围的径向凹槽（3）。墨水引导孔的直径为球形直径的30至55％，长度为导墨孔直径的1.2至2倍。用于去除通过切割（拉削）形成径向槽（3）而形成并突出到油墨引导孔（2）中的闪光的清洁工具被设置为具有直径为70至97％的直径的墨水引导孔，使得只剩下投影闪光灯的基部。

2. 发明授权

US5915871A Ball-point pen cap 失效
标题翻译：圆珠笔帽
公开(公告)号：US5915871A
公开(公告)日：1999-06-29
申请号：US927361
申请日：1997-09-09
申请人： Seiichi Kobayashi , Kazuhiko Furukawa , Hiroaki Koyama , Toru Kitao
发明人： Seiichi Kobayashi , Kazuhiko Furukawa , Hiroaki Koyama , Toru Kitao
IPC分类号： B43K1/08 , B43K5/18 , B43K23/12 , B43K23/08
CPC分类号： B43K5/1818 , B43K1/086 , B43K1/088 , B43K23/12 , B43K23/122 , B43K5/18 , B43K5/1881
摘要： A pen cap having at least two engaging portions (59f, 59r) specifically adapted to engage a receiving-side engaging portion (51f) formed on the mouthpiece-side end (7) of a hollow barrel and a receiving-side engaging portion (51r) formed on the tail-plug-side end of the hollow barrel (9), respectively. The engaging portions on the cap are at different locations along the cap's longitudinal axis. Furthermore, the engaging portions on the cap have their engaging surfaces disposed radially outward at different distances relative to the cap's longitudinal axis.
摘要翻译：一种具有至少两个接合部分（59f，59r）的笔帽，其特别适于与形成在中空筒的接口侧端部（7）上的接收侧接合部分（51f）接合，以及接收侧接合部分（51r ）分别形成在中空筒（9）的尾塞侧端部。帽上的接合部分沿着帽的纵向轴线处于不同的位置。此外，盖上的接合部分具有相对于盖的纵向轴线以不同的距离径向向外设置的接合表面。

3. 发明授权

US06887008B2 Ballpoint pen tip, ballpoint pen utilizing the ballpoint pen tip and method of manufacturing the ballpoint pen tip 失效
标题翻译：圆珠笔尖，圆珠笔利用圆珠笔笔尖和圆珠笔笔尖的制造方法
公开(公告)号：US06887008B2
公开(公告)日：2005-05-03
申请号：US10687831
申请日：2003-10-20
申请人： Toru Kitao , Hiroyuki Muto
发明人： Toru Kitao , Hiroyuki Muto
IPC分类号： B43K1/08 , B43K7/00 , B43K7/02 , B43K7/10 , B43M11/02
CPC分类号： B43K1/08 , B43K7/10
摘要： There is provided a ballpoint pen tip that minimizes thin spots such as impact thin spots even if upward writing or an impact causes entry of air, allows rapid return to normal writing, and minimizes manufacturing costs. A writing ball and a check ball included in the ballpoint pen tip are placed close to each other with a slight clearance therebetween to leave an inner space with a slight capacity. Thus, even if air enters from a caulking portion, the volume of the air stored inside is slight, and an air pool can be rapidly eliminated. Further, both the writing ball and the check ball can be provided in a front end of the ballpoint pen tip, and assembly operations can be easily performed without inverting the ballpoint pen tip.
摘要翻译：提供了一个圆珠笔笔尖，即使向上书写或冲击导致空气进入，也可以使薄点如冲击薄点最小化，从而快速恢复正常写入，并最大限度地降低制造成本。包括在圆珠笔笔尖中的书写球和止回球彼此靠近地放置，留下微小的容积的内部空间。因此，即使空气从填缝部分进入，储存在内部的空气的体积轻微，并且可以快速消除空气池。此外，书写球和止回球都可以设置在圆珠笔笔尖的前端，并且可以容易地进行组装操作而不颠倒圆珠笔笔尖。

4. 发明授权

US5711626A Ball-point pen with back flow stop 失效
标题翻译：圆珠笔带回流挡
公开(公告)号：US5711626A
公开(公告)日：1998-01-27
申请号：US501077
申请日：1995-08-04
申请人： Seiichi Kobayashi , Kazuhiko Furukawa , Hiroaki Koyama , Toru Kitao
发明人： Seiichi Kobayashi , Kazuhiko Furukawa , Hiroaki Koyama , Toru Kitao
IPC分类号： B43K1/08 , B43K5/18 , B43K23/12 , B43M11/02
CPC分类号： B43K5/1818 , B43K1/086 , B43K1/088 , B43K23/12 , B43K23/122 , B43K5/18 , B43K5/1881
摘要： A ball-point pen capable of preventing back leakage of ink when the pen is used to write with the ball-point tip above the ink reservoir. The pen has a ball-point tip (15); an ink reservoir (17) and a joint (19) connecting the ink reservoir with the tip for delivering ink to the tip. The joint has a tip-side bore (37a) and reservoir-side bore (33a) connected by a communicating hole (45), for allowing ink to pass from the reservoir-side bore to the tip-side bore. The communicating hole (45) is composed of a large-diameter portion (45b) and a small-diameter portion (45s) connected to the tip-side bore and the reservoir-side bore, respectively, and is eccentric to both bores. A ball 49 having a greater diameter than the bore diameter of the small-diameter portion is disposed to be freely movably in at least a part of a space formed between the rear end of the tip and the large diameter portion when the tip is fitted into the tip-side bore. When the pen is used to write with the tip above the ink reservoir, the ball closes the communicating hole preventing ink from leaking back to the reservoir.
摘要翻译： PCT No.PCT / JP94 / 02040 Sec。 371日期：1995年8月4日 102（e）日期1995年8月4日PCT 1994年12月5日PCT公布。公开号WO95 / 15859 日期：1995年6月15日一种圆珠笔，当笔用于墨盒上方的圆珠笔尖时，能够防止油墨反向泄漏。笔具有圆珠笔尖（15）; 墨水储存器（17）和将储墨器与用于将墨水输送到末端的末端连接的接头（19）。接头具有通过连通孔（45）连接的前端侧孔（37a）和贮存器侧孔（33a），用于允许油墨从储存器侧孔口传送到顶端侧孔。连通孔45由分别连接到前端侧孔和储存器侧孔的大径部45b和小直径部45s构成，并且对于两个孔偏心。具有比小直径部分的孔直径大的直径的球49设置成当尖端被装配到尖端的后端和大直径部分之间形成的空间的至少一部分中时可自由移动尖端侧孔。当笔用墨水盒上方的笔尖写入时，球关闭连通孔，防止墨水泄漏回储存器。

5. 发明授权

US5678942A Ball-point pen 失效
标题翻译：圆珠笔
公开(公告)号：US5678942A
公开(公告)日：1997-10-21
申请号：US601246
申请日：1996-02-14
申请人： Seiichi Kobayashi , Kazuaki Matsumoto , Toru Kitao
发明人： Seiichi Kobayashi , Kazuaki Matsumoto , Toru Kitao
IPC分类号： B43K1/08 , B43K5/18 , B43K7/10
CPC分类号： B43K5/1836 , B43K1/086
摘要： A ball-point pen having a coupling, a tip at the distal end of the coupling, and a reservoir tube at the proximal end of the coupling. The tip may held in a tip holder, which, in turn, is coupled to the distal end of the coupling. A valve chamber is formed within the coupling with a ball seat having a guide hole therethrough on the rear portion of the valve chamber and projecting ridges on the front portion of the valve chamber. When the ball-point pen is positioned with its tip upward, a ball valve is brought into contact with the ball seat to close the guide hole and thereby prevent back flow of ink. When the ball-point pen is positioned with its tip downward, the guide hole is opened and the ball valve contacts the rear ends of the projecting ridges, so that ink flows into the tip through the guide hole, the valve chamber, and grooves formed between the ridges. A spring may be interposed in the inner hole of the tip with its proximal end held in place by the coupling. The distal end of the spring presses a writing point ball into contact with the ball-holding portion of the tip. A low-viscosity ink or an ink having shear thinning properties, i.e., statically a high viscosity which is decreased upon rotation of the ball during writing, is preferably used.
摘要翻译：具有联轴器，联轴器远端的尖端以及联轴器近端处的储液管的圆珠笔。尖端可以保持在尖端保持器中，该保持器又联接到联接器的远端。阀室在联轴器内形成有球阀座，该球座具有贯穿其中的导向孔，在阀室的后部上，并且在阀室的前部上具有突出的脊。当圆珠笔的尖端向上定位时，球阀与球座接触，以关闭导向孔，从而防止墨回流。当圆珠笔尖端向下定位时，引导孔打开，球阀接触突出脊的后端，使得墨通过导孔，阀室和形成的凹槽流入尖端脊之间。弹簧可以插入到尖端的内孔中，其近端通过联接保持在适当的位置。弹簧的远端将书写点球压到尖端的球保持部分上。优选使用具有剪切变稀性的低粘度油墨或油墨，即静态高粘度，其在书写期间旋转时减少。

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