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61. 发明专利

JPH07299986A WATER-BASED BALL-POINT PEN, AND ITS MANUFACTURE 失效
公开(公告)号：JPH07299986A
公开(公告)日：1995-11-14
申请号：JP11458094
申请日：1994-04-29
申请人： PILOT INK CO LTD
发明人： INABA TAKAO , KONDO MASAHIRO , ANDO MASASHI
IPC分类号： B43K15/00 , B43K7/00 , B43K7/10
摘要： PURPOSE:To provide a water-based ball point pen of high writing performance and its manufacture which is free from blurring in handwriting without causing an impossibility of writing without producing a crackle in the fitting part, or without scraping off in a fitting part of a holder in an ink-containing tube. CONSTITUTION:A water color ball point pen 1 is provided wherein a lubricant is applied between a holder 2 and a fitting part 21 of an ink-containing tube 4, after applying the lubricant to the holder 2 or the ink-containing tube 4 the holder 2 is fitted to the ink-containing tube 4.

62. 发明专利

JP2003237282A RETRACTABLE WRITING IMPLEMENT 审中-公开
公开(公告)号：JP2003237282A
公开(公告)日：2003-08-27
申请号：JP2002041131
申请日：2002-02-19
申请人： PILOT INK CO LTD
发明人： ANDO MASASHI
IPC分类号： B43K7/12 , B43K1/08 , B43K24/08
摘要： PROBLEM TO BE SOLVED: To prevent a gate mark from standing out, to protect the beautiful appearance of a casing, to prevent the movement of a refill from being hindered even when the gate mark is protruded, and to enough control the shake of a pen point during writing. SOLUTION: The refill of a writing implement is housed in the casing 2. A tip opening 3 through which the pen point 5 of the refill passes is formed in the tip part 21 of the casing. The tip part 21 of the casing 2 is formed at least by the injection molding of a synthetic resin. A recessed part 31 is formed in a part of the opening end part of the inside surface of the tip opening 3. A gate part 32 for injection molding is formed in the recessed part 31. A support part 33 for supporting the outside surface of the refill (the front part 61 of a pen point holder) is formed in a part excluding the recessed part 31 of the opening end part of the inside surface of the tip opening 3. COPYRIGHT: (C)2003,JPO

63. 发明专利

JP2003136877A BALLPOINT PEN 审中-公开
公开(公告)号：JP2003136877A
公开(公告)日：2003-05-14
申请号：JP2001335317
申请日：2001-10-31
申请人： PILOT INK CO LTD
发明人： ANDO MASASHI , TANAKA HIDEYUKI
IPC分类号： B43K1/00 , B43K1/08 , B43K7/00 , B43K7/08 , B43K7/10
摘要： PROBLEM TO BE SOLVED: To prevent a rod part from getting into the peripheral edge end part of an ink outflow gap in assembling. SOLUTION: An inward fore end edge part 21 is provided in the fore end of a tip main body 2 made of metal. A plurality of inward projecting parts 22 are provided inside the tip main body 2 in the rear of the fore end edge part 21 by inward pressing deformation. A ball 3 is held rotatably between the fore end edge part 21 and the inward projecting parts 22. The ink outflow gap 4 extending outward diametrically and radially from the central part is formed among the inward projecting parts 22. The rod part 51 urging the ball 3 forward and bringing it into close contact with the inner surface of the front end edge part 21 is inserted through the ink outflow gap 4. The diameter of an imaginary inscribed circle of the central part of the ink outflow gap 4 is set to be larger than the outside diameter of the rod part 51. The minimum dimension of the ink outflow gap 4 is set to be smaller than the outside diameter of the rod part 51.

64. 发明专利

JP2001018581A CAP FOR WRITING TOOL 失效
公开(公告)号：JP2001018581A
公开(公告)日：2001-01-23
申请号：JP19288699
申请日：1999-07-07
申请人： PILOT INK CO LTD
发明人： MAKI MASAHISA , ANDO MASASHI
IPC分类号： B43K23/08 , B43K25/02
摘要： PROBLEM TO BE SOLVED: To smoothly and surely fit a head crown on a cap main body by a small pushing-in force. SOLUTION: A head crown 5 is provided with a base part 6 exposing from the top end part of a cap main body 2 and a pair of inserting pieces 7 integrally extended downward from the base part 6. Slits 72 are provided between the inserting pieces 7 each other and projections 71 for hooking are respectively provided on each of the inserting pieces 7. A pair of hooking holes 41 being hookable with the hooking projections 71 are provided on the inner face of the cylindrical part 4 of the cap main body 2. A pair of guide projections 31 which can be press-fitted in the slits 72 are provided on the outer face of the projecting part 3 of the cap main body 2.

65. 发明专利

JPH10329477A BALLPOINT PEN TIP 失效
公开(公告)号：JPH10329477A
公开(公告)日：1998-12-15
申请号：JP22737797
申请日：1997-08-07
申请人： PILOT INK CO LTD
发明人： ANDO MASASHI
IPC分类号： B43K1/08
摘要： PROBLEM TO BE SOLVED: To smoothly write even when a tip ball is embedded in a sheet surface by sufficiently suppressing drop of a ball, regardless of adopting an extremely small ball in a ballpoint pen tip for small letters, and stably embracing the ball for a long period. SOLUTION: The ballpoint pen tip is rotatably embraced by exposing part of a ball 3 with exterior by a converged edge 5 made of a circumferential inner deformation of an end of a body 2 made of metal. And, a virtual circle P coincident with an outer diameter D of the ball 3 is drawn on an inner periphery of the edge 5, and when a radial thickness of the edge of the position where the circle P is drawn is T, a ratio T/D of the thickness T to the outer diameter D of the ball is set to a range of 0.07 to 0.18.

66. 发明专利

JPH0852980A BALL-POINT PEN 失效
公开(公告)号：JPH0852980A
公开(公告)日：1996-02-27
申请号：JP16001995
申请日：1995-06-02
申请人： PILOT INK CO LTD
发明人： SEKINE NOBUO , ANDO MASASHI , OGAWARA YOSHIAKI
IPC分类号： B43K7/00 , B43K1/08
摘要： PURPOSE:To prevent a tip pipe section from being folded by a normal writing pressure. CONSTITUTION:A straight pipe section 3 that is projected to the outside is provided to a tip section of a ball-point pen tip. Equations of L/D

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