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81. 发明专利

DE3750903T2 未知
公开(公告)号：DE3750903T2
公开(公告)日：1995-04-20
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.

82. 发明专利

ES2033427T3 未知
公开(公告)号：ES2033427T3
公开(公告)日：1993-03-16
申请号：ES88302789
申请日：1988-03-29
申请人： KOTOBUKI & CO., LTD.
发明人： KAGEYAMA, HIDEHEI KOTOBUKI & CO., LTD. , MITSUYA, YOSHIHIDE KOTOBUKI & CO., LTD. , NAKAZATO, YOICHI KOTOBUKI & CO., LTD.
IPC分类号： B43K21/033
摘要： A mechanical pencil in which lead feed is done automatically upon release of writing of a slider (3) from the paper surface or the like and the slider can be locked in a retreated position when the pencil is not in us, and the mechanical pencil including a tip member (2) fitted in the front end of a shell removably, a sleeve (4) disposed slidably in the interior of said tip member, a lead feed mechanism (5) which is mounted in the interior of the sleeve and which permits a forward movement of a lead but inhibits a backward movement of the lead, an ejection bar (10) mounted on the front end side of the sleeve, with the lead extending through the ejection bar, a slider disposed slidably within the tip member and having a locking engaging portion (35) capable of engaging said tip member disengageably, the slider imparting a predetermined frictional force to the lead, and a resilient member (11) disposed between the slider and the ejection bar, the resilient member having an urging force stronger than a lead gripping force of the lead feed mechanism under a given state.

83. 发明专利

DE3870973D1 未知
公开(公告)号：DE3870973D1
公开(公告)日：1992-06-17
申请号：DE3870973
申请日：1988-03-29
申请人： KOTOBUKI & CO LTD
发明人： KAGEYAMA LTD , MITSUYA LTD , NAKAZATO LTD
IPC分类号： B43K21/033
摘要： A mechanical pencil in which lead feed is done automatically upon release of writing of a slider (3) from the paper surface or the like and the slider can be locked in a retreated position when the pencil is not in us, and the mechanical pencil including a tip member (2) fitted in the front end of a shell removably, a sleeve (4) disposed slidably in the interior of said tip member, a lead feed mechanism (5) which is mounted in the interior of the sleeve and which permits a forward movement of a lead but inhibits a backward movement of the lead, an ejection bar (10) mounted on the front end side of the sleeve, with the lead extending through the ejection bar, a slider disposed slidably within the tip member and having a locking engaging portion (35) capable of engaging said tip member disengageably, the slider imparting a predetermined frictional force to the lead, and a resilient member (11) disposed between the slider and the ejection bar, the resilient member having an urging force stronger than a lead gripping force of the lead feed mechanism under a given state.

84. 发明专利

DE3218633C2 未知
公开(公告)号：DE3218633C2
公开(公告)日：1984-12-06
申请号：DE3218633
申请日：1982-05-18
申请人： KABUSHIKI KAISHA SAKURAKUREPASU, OSAKA, JP
发明人： MORIO, YASUMASA, OSAKA, JP
IPC分类号： B43K21/027 , B43K21/033 , B43K21/22 , B43K21/02
摘要： A propelling or automatic writing implement having a lead which can be projected from the implement without pushing. An inner frame having a chuck assembly for permitting advance of the lead but preventing retraction of the lead and a lead protecting tube having a holder for holding the lead with a suitable frictional force are housed in a main body and slidable axially thereof. A mechanism is provided for retracting the frame and the tube by a reaction to which the lead is subjected when pressed against the writing surface with a force of considerable magnitude and for returning them when the lead is released from the force, while permitting the tube to move backward and forward relative to the frame in the course of the reciprocating movement. The lead can be projected by the relative movement of the tube and the frame.

85. 发明专利

DE3207923C2 未知
公开(公告)号：DE3207923C2
公开(公告)日：1984-05-17
申请号：DE3207923
申请日：1982-03-05
申请人： FA. A.W. FABER-CASTELL, 8504 STEIN, DE
发明人： KATZ, OTTO, DIPL.-ING, 8540 SCHWABACH, DE
IPC分类号： B43K21/033 , B43K21/22 , B43K21/02

86. 发明专利

DE3229498A1 未知
公开(公告)号：DE3229498A1
公开(公告)日：1984-02-09
申请号：DE3229498
申请日：1982-08-07
申请人： STAEDTLER FA J S
发明人： BRUNNER ENGELBERT , KAISER KARL ING GRAD
IPC分类号： B43K21/00 , B43K21/027 , B43K21/033 , B43K21/22 , B43L13/00 , B43L13/02 , B43K21/02
摘要： An automatic lead pencil device has a casing which is releasably mountable in a bracket of a drafting machine. Within the casing, there is a clamp sleeve in which a clamping member is axially movable for clamping and releasing a lead during use of the pencil device. An axial movable lead guide tube projects outwardly of the casing in the rest position, and there is a pencil brake within the lead guide tube. The contact zone between the clamping member and the clamp sleeve is constructed so as to be of the non-self-locking type. There is an operative connection between the clamping member and the lead guide tube such that the clamping member is closed when the lead guide tube moves axially inwardly to assume the working position and opens when the lead guide tube moves axially outwardly toward a rest position.

87. 发明专利

DE3228718A1 Refillable pencil with automatic lead propulsion 未知
公开(公告)号：DE3228718A1
公开(公告)日：1984-02-02
申请号：DE3228718
申请日：1982-07-31
申请人： BUTKA KEMAL
发明人： BUTKA KEMAL
IPC分类号： B43K21/033 , B43K21/16
摘要： A refillable pencil with automatic lead propulsion, especially suited for thin leads, contains a lead guide (2) which is coaxially displaceable in a housing (7, 10), projects partially therefrom downwards and completely encloses the projecting lead part (1) as far as the tip (2c). In the interior of the housing, an elastomeric ring (3, 13) in frictional contact with the inner wall of the housing encloses the lead (1) above the lead guide, with slight adhesive friction. It transmits the writing pressure from the writing tip (2c) to a pincer (8) which, even with slight compression of the elastomeric piece (3, 13), closes around the lead (1), retains it and so permits writing. Each time that the writing pressure is relieved (end of word), the lead guide together with the pincer drops downwards, the pincer immediately opening because the pressure on its underside is abruptly discontinued since the flanges (13a, 13b) of the elastomeric ring, because of the latter's friction against the inner wall of the housing, cannot be released as rapidly as the lead guide (2) falls downwards.

88. 发明专利

FR2395845B1 未知
公开(公告)号：FR2395845B1
公开(公告)日：1984-01-20
申请号：FR7819538
申请日：1978-06-29
申请人： FABER CASTELL A W
IPC分类号： B43K21/033 , B43K21/027 , B43K21/20 , B43K21/02
摘要： A mechanical pencil with a lead feed, automatically produced by pressure during use of the pencil, comprises a tubular lead magazine closed at an outer end by a removable actuating button and being movably guided in a tubular housing, clamping elements in the housing actuatable by pressure on the actuating button and a lead guide tube projecting from a conical end of the housing and being movable against the pressure of a spring into the latter and carrying at the inner end thereof an entrainment element exerting friction on the lead passing therethrough, in which the clamping elements are movable by means of the actuating button against the force of a second weaker spring and guided by rolling elements along a conical guide face of a clamping cone, which in turn is axially movable between two end positions in the housing.

89. 发明专利

DE3125441C2 未知
公开(公告)号：DE3125441C2
公开(公告)日：1983-07-07
申请号：DE3125441
申请日：1981-06-27
申请人： FA. A.W. FABER-CASTELL, 8504 STEIN, DE
发明人： KATZ, OTTO, DIPL.-ING., 8540 SCHWABACH, DE
IPC分类号： B43K21/033 , B43K21/027 , B43K21/02
摘要： A writing instrument with automatic advancement and feed of successive leads has a housing having a tip part, a lead protecting pipe having an axis and movable in an axial direction, a lead container spaced from the lead protecting pipe in the axial direction, a gripping sleeve extending between the lead container and the lead protecting pipe, a lead clamping member having a plurality of clamping arms and movable between open and closed positions in the axial direction, wherein the clamping arms of said lead clamping member are arranged to abut against the gripping sleeve under a spring action and having a clamping opening with a receiving portion, and the lead clamping member has a shaft connected with said clamping arms with a region adjacent to the latter, and a tilting member provided in the region of the shaft of the clamping member and arranged so that during movement of the lead protecting pipe to the tip part of the housing the tilting member displaces on the shaft of the clamping member, and during movement of the lead protecting pipe in an opposite direction out of the tip part of the housing the tilting member becomes firmly connected with the shaft of the clamping member.

90. 发明专利

DE3134689A1 Writing instrument with automatic advance of the lead or refill 未知
公开(公告)号：DE3134689A1
公开(公告)日：1983-03-17
申请号：DE3134689
申请日：1981-09-02
申请人： SCHMIDT FEINTECHNIK GMBH
发明人： MUELLER HUBERT PROF DR ING , SCHMIDT ROLF ING GRAD
IPC分类号： B43K21/033 , B43K21/02
摘要： The subject of the application is a writing instrument in which the writing lead or refill (12) is automatically transported as a function of consumption. To this end, an advancing unit (20) constantly acts on the lead or refill in the direction of advance. A clamping unit (14, 17) prevents the advance of the lead or refill (12) from taking place. This clamping unit is released when a lead or refill tube (13), provided in an axially insertable manner on the tip of the writing instrument, touches the writing substrate, that is to say when the lead or refill (12) has been worn away by writing to the extent of the end projecting beyond the lead or refill tube (13). Transmission levers (15) arranged between the lead or refill tube (13, 13a) and the clamping unit (14, 17) cause the axial displacement of the clamping elements (14) to be enlarged relative to the return stroke of the lead or refill tube (13). The consequence of this is that, after automatic advance, the lead or refill projects beyond the lead or refill tube.

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