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52. 发明专利

DE60223732T2 未知
公开(公告)号：DE60223732T2
公开(公告)日：2008-11-20
申请号：DE60223732
申请日：2002-01-08
申请人： KOTOBUKI & CO LTD
发明人： KAGEYAMA HIDEHEI , NOGUCHI YOSHIO
IPC分类号： B43K21/027 , B43K21/22 , B43K21/033
摘要： A mechanical pencil, includes a barrel (10), a lead feeding mechanism (20) disposed in the barrel to tighten and feed a lead, an operating part for causing the lead feeding mechanism to feed the lead, and holding portions (50e,50f) for holding the lead being provided in at least two positions between the lead feeding mechanism and a tip end of the barrel spacedly in the axial direction.

53. 发明专利

FR2723885A1 未知
公开(公告)号：FR2723885A1
公开(公告)日：1996-03-01
申请号：FR9510164
申请日：1995-08-29
申请人： AT CROSS COMPANY
发明人： SHUHEI KAGEYAMA , TADAYOSHI EBINUMA , CLEM THOMAS
IPC分类号： B43K21/16 , B43K21/033 , B43K23/08 , B43K29/02
摘要： A mechanical pencil has a front sleeve, a cap rotatably and detachably mounted at the rear end of the front sleeve, and a lead advancing mechanism contained in the front sleeve. Rotation of the cap actuates the lead advancing mechanism to advance a lead. The mechanical pencil prevents breakage of lead and has low manufacturing costs. A rotation cam mechanism is disposed behind the lead advancing mechanism for advancing lead. The rotation cam mechanism has a rotation cam for rotating in accordance with rotation of a cap and a cam sleeve biased to engaged the rotation cam. An inside diameter of the front end of the cam sleeve is larger than an outside diameter of the rear end of the lead advancing mechanism so that the rear end of the lead advancing mechanism is inserted into the front end of the cam sleeve with a clearance in the radial direction. An inside diameter of the rear end of the lead advancing mechanism is larger than the outside diameter of a lead to establish a clearance there also. Due to these clearances, if the pencil is dropped, lead is not broken due to distortion of the lead advancing mechanism.

54. 发明专利

DE3750903D1 未知
公开(公告)号：DE3750903D1
公开(公告)日：1995-02-02
申请号：DE3750903
申请日：1987-10-30
申请人： KOTOBUKI & CO LTD
发明人： KAGEYAMA HIDEHEI , MITSUYA YOSHIHIDE , NAKAZATO YOICHI
IPC分类号： B43K21/033 , B43K21/22
摘要： A chuck for a mechanical pencil, wherein a lead holding part (62) is formed with several teeth (63) for use in holding the lead under four-point or six-point contacted condition. In this manner lead dust discharging regions are made. The extremity end (41) of the lead supplying cylinder is abutted against the rear raised surface (601) of the flange part (6a) from the rear end side of the lead chuck, forced applied from both directions when the front raised surface (602) of the flange part (6a) receive the rear end of the resilient member (12) installed between it and the sleeve (7) are utilized and each of the chuck members (61) generates a flexing phenomenon and then the chuck members may perform an instantaneous expanding operation under this flexing force.

57. 发明专利

DE3915331C2 未知
公开(公告)号：DE3915331C2
公开(公告)日：1991-11-28
申请号：DE3915331
申请日：1989-05-10
申请人： KOTOBUKI & CO., LTD., KYOTO, JP
发明人： KAGEYAMA, HIDEHEI , MITSUYA, YOSHIHIDE , NAKAZATO, YOUICHI, KAWAGOE, SAITAMA, JP
IPC分类号： B43K21/16 , B43K21/00 , B43K21/027 , B43K21/033 , B43K21/22
摘要： A mechanical pencil in which a lead guide pipe may protect a lead in a range from a lead chuck to the tip member or an extremity end of the slider by the tip member or the slider or the projection bar as well as the lead guide pipe so as to protect the lead and to prevent a breakage of the lead and a clogging of broken lead.

59. 发明专利

DE3229497C2 未知
公开(公告)号：DE3229497C2
公开(公告)日：1985-08-08
申请号：DE3229497
申请日：1982-08-07
申请人： FA. J.S. STAEDTLER, 8500 NUERNBERG, DE
发明人： BRUNNER, ENGELBERT, 8502 ZIRNDORF, DE
IPC分类号： B43K21/00 , B43K21/027 , B43K21/033 , B43K21/20 , B43K21/22 , B43L13/02 , B43K21/02

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