EP1718478A1 - Mechanical pencil comprising a retractable lead guide - Google Patents

Mechanical pencil comprising a retractable lead guide

Info

Publication number
EP1718478A1
EP1718478A1 EP05730734A EP05730734A EP1718478A1 EP 1718478 A1 EP1718478 A1 EP 1718478A1 EP 05730734 A EP05730734 A EP 05730734A EP 05730734 A EP05730734 A EP 05730734A EP 1718478 A1 EP1718478 A1 EP 1718478A1
Authority
EP
European Patent Office
Prior art keywords
mine
brake
guide
mechanical
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05730734A
Other languages
German (de)
French (fr)
Other versions
EP1718478B1 (en
Inventor
Franck Rolion
Frédéric DUCHESNE
Jeanne-Antide Bouveresse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIC SA
Original Assignee
BIC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BIC SA filed Critical BIC SA
Publication of EP1718478A1 publication Critical patent/EP1718478A1/en
Application granted granted Critical
Publication of EP1718478B1 publication Critical patent/EP1718478B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/027—Writing-core feeding mechanisms with sliding tubelike writing-core guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/22—Writing-cores gripping means, e.g. chucks

Definitions

  • the present invention relates to mechanical pencils with retractable lead guide. More particularly, the invention relates to a mechanical pencil of the type comprising: a body extending longitudinally along an axis X between a front writing end and a rear end, - a tip located at the front end, a mine guide retractable in the tip, comprising a conduit for the passage of a mine and its guiding in translation along the X axis; and a mine brake made of elastically deformable material and connected to the mine guide, said mine brake comprising at least one mine-mine brake friction zone, limiting the displacement of the mine in the mine guide, and at least one friction zone mine brake tip, limiting the movement of the mine guide in the tip.
  • the lead guide 5 comprises a conduit 6 made in one piece with a cup 21 in which is placed a lead brake 13 made of rubber, that is to say an elastically deformable material.
  • This mine brake 13 comprises a ring 20 inserted in the cup 21 and a ring 22 projecting from the cup 21 and extending radially outwards, that is to say towards the end piece 4.
  • the part of the brake lead 13 corresponding to the ring 20 exerts a circular and continuous pressure on the external surface of the mine.
  • the part of the lead brake 13 corresponding to the crown 22 also exerts a circularly continuous and uniform pressure on the internal surface of the end piece 4.
  • the invention differs from this mechanical pencil of the art anterior in particular by the fact that each mine-mine friction friction zone is angularly offset around the axis X with respect to each mine tip-mine friction zone. Thanks to this arrangement, it is possible to manufacture mechanical pencils of the type indicated above in a simple manner, since the dimensional tolerances of the mechanical brake, or even the mechanical guide, may be less strict than for mechanical pencils of the prior art. Indeed, in this type of mechanical pencil, it is generally desired that the pencil is braked in the pencil guide so that it does not fall from the pencil when the advance clamp of the pencil is open. It is also desired that the retractable lead guide is also braked so as not to debate freely in the tip.
  • the friction between the retractable lead guide and the tip must not be excessive, in order to allow a slight retreat of the lead guide when the lead is worn so as to release the front end of the lead and continue writing.
  • the friction force between the lead and the lead guide is less than the friction force between the lead guide and the tip to allow the user to push the lead back into the mechanical pencil if it it came out of excessive length, without however causing a retraction of the mine guide.
  • - the mine brake considered perpendicular to the axis X, has an oblong shape , mine tip-brake friction zones being formed at each of the ends of the oblong shape;
  • - the mine brake has an annular shape;
  • - the mine brake is held on the mine guide between two shoulders;
  • the lead of the mine guide comprises at least one opening through which the mine brake cooperates with the mine, in a mine-guide mine friction zone; - two diametrically opposed tip-brake mine friction zones are provided, and two diametrically opposite mine-brake mine friction zones are provided provided, said tip-mine brake friction zones being angularly offset by approximately 90 degrees relative to the mine-mine brake friction zones;
  • - the mine brake has the shape of a torus, before its installation on the mine guide;
  • - the mine guide and the mine brake form a single piece made of at least two materials;
  • - The mine guide has at least one portion of synthetic
  • FIG. 1 shows schematically in longitudinal section a body of an exemplary embodiment of a mechanical pencil according to the invention
  • - Figure 2 schematically shows the tip of the mechanical pencil of Figure 1
  • - Figure 3 shows schematically in perspective a mine guide intended to be mounted in a tip such as that shown in Figure 2
  • - Figure 4 shows, seen from above, the mine guide of Figure 3
  • - Figure 5 schematically shows a cross section of the mine guide shown in Figure 4
  • - Figure 6 schematically shows a partial section of the lead guide, shown in Figures 3 to 5, mounted in a tip such as that of Figure 2
  • - Figure 7 corresponds to an enlargement of Figure 6
  • - Figure 8 schematically shows a mechanical cartridge intended to be housed in a mechanical pencil according to another embodiment of the invention
  • - Figure 9 shows schematically in section, in a view similar to that of Figure 2, a tip, a lead guide
  • FIG. 1 An example of a mechanical pencil in accordance with the present invention is shown in FIG. 1.
  • This comprises a cylindrical body 1 extending longitudinally along an axis X.
  • This body 1 has a front end 2 and a rear end 3.
  • Au level of the front end 2 a tip 4 is mounted.
  • This tip 4 comprises a lead guide 5.
  • This lead guide 5 comprises a conduit 6 intended to guide a mine in translation along the axis X and to protect it at the outlet of the tip 4.
  • the mechanical pencil according to the invention will only be described in detail at its tip 4 and its lead guide 5.
  • the rest of the lead mechanism (not shown), in the mechanical pencil, can be of any type known to those skilled in the art.
  • the tip 4 has a substantially frustoconical shape. It comprises a first cylindrical cavity 7 of revolution around the axis X. This first cavity 7 has an internal diameter Di. It continues towards the tip of the nozzle 4 by a second cylindrical cavity 8 of revolution around the axis X and of diameter D 2 .
  • the conduit 6 of the lead guide 5 has the shape of a cylinder of revolution around the axis X with an external diameter slightly less than the diameter D 2 of the second cavity 8. The external diameter of the conduit 6 and the diameter D 2 of the second cavity are adapted so that the guide mine 5 can be moved in a guided manner, but without effort, in one end piece 4.
  • the conduit 6 has an internal diameter adapted so that a mine 9 can move there, parallel to the axis X, without effort.
  • the mine guide 5 is produced with materials having a certain rigidity so as to have stable geometrical dimensions which allow it to slide without blocking in the end piece 4, as well as guiding and holding the mine 9 up to its front end. .
  • the mine guide 5 can be made of plastic, for example POM, ABS or SAN, but it can be made wholly or partly of metal.
  • the lead guide 5 has a first shoulder 10 retaining this lead guide 5 in the second cavity 8.
  • a second shoulder 11 is connected to the first shoulder 10 by two bridges 12.
  • the first 10 and second 11 shoulders have the same diameter. This diameter is adapted so that the first 10 and second 11 shoulders slide in the second cavity 8 without friction.
  • the first 10 and second 11 shoulders have a cylindrical shape of revolution around the axis X.
  • the distance between the first 10 and the second 11 shoulders is less than the difference between the internal diameter of the conduit 6 and the external diameter of the first 10 and second 11 shoulders.
  • the mine brake 13 is made of elastomer, but it could also be made of rubber or any other elastically deformable material so as to be able to marry the surfaces with which it must create a friction zone. Note that the mine brake 13 in toroidal form is particularly easy to produce, it can even be a standard item.
  • the mine brake 13 may have a shape different from that of a torus. It can be a flat ring radially and / or thick. As shown in FIG. 5, each bridge 12 corresponds to a portion of cylinder whose internal diameter is equal to the internal diameter of the conduit 6 and whose external diameter is 1.2 to 1.5 times greater than this internal diameter. The two bridges 12 are diametrically opposite and are spaced so as to provide two openings 14 also diametrically opposite. As shown in FIG. 6, when a toric mine brake 13 is inserted between the first 10 and second 11 shoulders, it takes an oblong shape due to the radial thickness of the bridges 12. The internal diameter of the brake mine 13 is substantially equal to the external diameter of mine 9 and to the internal diameter of conduit 6.
  • the external diameter of mine brake 13 is between the external diameter of the first 10 and second 11 shoulders and the internal diameter D 2 of the second cavity 8.
  • the mine brake 13 when the mine brake 13 is placed between the first 10 and second 11 shoulders, it is deformed due to the radial thickness of the bridges 12.
  • the mine brake 13 thus exercises a pressure, along an axis Y, on the internal face of the second cavity 8.
  • the mine brake 13 exerts a pressure, along an axis Z, on the mine 9.
  • the distance D defining brake dimension of min e 13 along the Z axis, is adapted so that there is not, in the corresponding direction, contact between the mine brake 13 and the nozzle 4.
  • the distance D ' corresponds to the dimension of the brake lead 13 along the Y axis, when it is in place on the lead guide 5, is adapted so that the lead brake 13 is in contact with the tip 4. Nevertheless, the lead brake 13 has a diameter, when not mounted on the lead guide 5, less than the internal diameter D 2 of the second cavity 8. A friction zone F ′ is therefore obtained between the end piece 4 and the lead brake 13.
  • the diameter d corresponds to the diameter of the mine 9.
  • This diameter d is greater than the distance d 'which would separate the zones of the mine brake 13, separating the openings 14, along the axis Z.
  • the difference d "between the diameter d of the mine 9 and the distance d is such that the mine 9 protrudes from the openings 14 thus defining a friction zone F between the mine 9 and the mine brake 13.
  • the friction forces exerted between the nozzle 4 and the mine brake 13 at the friction zones F ' are less than the friction forces exerted between the mine 9 and the mine brake 13, at the level of the friction zones F.
  • the mechanical guide 5 can be an integral part of a mechanical cartridge 25.
  • the mechanical cartridge 25 comprises, in addition to the mechanical guide 5, a sleeve 27 in which is housed a mechanism for advancing mine, such as for example a known mechanism comprising a clamp whose clamping head cooperates with a ring, and a tube 28 extending to the rear end of the mechanical pencil, which forms a reservoir for the mines and makes it possible to transmit to the advance mechanism the action of the user exerted on a button, not shown, located at the rear end of the mechanical pencil.
  • This cartridge 25 is removably mounted in a mechanical pencil such as that shown in FIG. 1 which comprises a body 1 and a tip 4.
  • the mine guide 5 includes a pencil brake 13 made of elastomer.
  • the lead brake 13 is directly molded on the lead guide 5 made of plastic.
  • the overmolding of the lead brake 13 is produced by a bi-injection process, that is to say that the mine guide 5 is carried out by a first injection of thermoplastic material into a mold comprising a core to form the conduit 6, then the elastomer is injected into this mold without removing the core to form the lead brake 13.
  • the lead brake 13 has an oblong shape whose diametrically opposite ends protrude from the guide mine 5 and form the tip-brake friction zones of mine F '. Openings, not visible in FIG.
  • the lead tip-brake friction zones F ′ can slow the retraction of the lead guide 5 if the cartridge assembly 25 is movable over a certain distance in the body of the mechanical pencil, or if the lead guide 5 is mounted mobile longitudinally over a certain distance with respect to the sleeve 27.
  • the mine tip-brake friction zones F ′ also make it possible to immobilize the cartridge in the body of the mechanical pencil if there is a certain clearance between the rear end of the reservoir tube 28 and the control button acting on this end. It is thus possible to avoid noise from rattling of the cartridge 25 in the mechanical pencil.
  • the end piece 4 and the body 1 can form a single piece.
  • the lead guide 5 and the lead brake 13 may consist of a single piece, formed from two materials, a thermoplastic and an elastomer respectively, by bi-injection.

Abstract

The invention relates to a mechanical pencil comprising a tip (4) into which a lead guide (5) can be retracted. The lead guide comprises a conduit (6) through which a lead (9) can pass and be guided in translation. A deformable lead brake (13) is equipped with (i) at least one lead/lead brake friction area which limits the movement of the lead (9) in the lead guide (5) and (ii) at least one tip/lead brake friction area which limits the movement of the lead guide (5) in the tip (4). Each lead/lead brake friction area is offset angularly around an axis X in relation to each tip/lead brake friction area.

Description

PORTE-MINE A GUIDE MINE RETRACTABLE RETRACTABLE MINE GUIDE ROD
La présente invention est relative aux porte-mines à guide mine rétractable. Plus particulièrement, l'invention concerne un porte-mine du type comportant : un corps s ' étendant longitudinalement selon un axe X entre une extrémité avant d'écriture et une extrémité arrière, - un embout situé au niveau de l'extrémité avant, un guide mine rétractable dans l'embout, comportant un conduit pour le passage d'une mine et son guidage en translation selon l'axe X ; et un frein de mine en matière élastiquement deformable et relié au guide mine, ledit frein de mine comportant au moins une zone de friction mine-frein de mine, limitant le déplacement de la mine dans le guide mine, et au moins une zone de friction embout-frein de mine, limitant le déplacement du guide mine dans l'embout. Le document EP-A-1 125 763 décrit un exemple d'un tel porte-mine. Selon ce document et comme représenté sur la figure 9, le guide mine 5 comporte un conduit 6 venu de matière avec une coupelle 21 dans laquelle est placé un frein de mine 13 en caoutchouc, c'est-à-dire une matière élastiquement deformable. Ce frein de mine 13 comporte une bague 20 insérée dans la coupelle 21 et une couronne 22 dépassant de la coupelle 21 et s 'étendant radialement vers l'extérieur, c'est-à-dire vers l'embout 4. La partie du frein de mine 13 correspondant à la bague 20 exerce une pression circulairement continue et uniforme sur la surface externe de la mine. La partie du frein de mine 13 correspondant à la couronne 22 exerce une pression également circulairement continue et uniforme sur la surface interne de l'embout 4. L'invention se distingue de ce porte-mine de l'art antérieur notamment par le fait que chaque zone de friction mine-frein de mine est décalée angulairement autour de l'axe X par rapport à chaque zone de friction embout-frein de mine. Grâce à cette disposition, il est possible de fabriquer de manière simple des porte-mines du type indiqué ci-dessus, car les tolérances dimensionnelles du frein de mine, voire du guide mine, peuvent être moins strictes que pour les porte-mines de l'art antérieur. En effet, dans ce type de porte-mine, il est généralement souhaité que la mine soit freinée dans le guide mine pour qu'elle ne tombe pas du porte-mine lorsque la pince d'avance de la mine est ouverte. Il est également souhaité que le guide mine rétractable soit aussi freiné pour ne pas débattre librement dans l'embout. Toutefois, la friction entre le guide mine rétractable et l'embout ne doit pas être excessive, afin de permettre un léger recul du guide mine lorsque la mine est usée de manière à dégager l'extrémité avant de la mine et poursuivre l'écriture. De plus, il est préférable que la force de friction entre la mine et le guide mine soit inférieure à la force de friction entre le guide mine et l'embout pour permettre à l'utilisateur de repousser la mine dans le porte mine si celle-ci est sortie d'une longueur excessive, sans toutefois entraîner une rétractation du guide mine. Ces deux types de force de friction doivent donc être réglés avec précision pour obtenir un confort d'utilisation satisfaisant. Ce type d'ajustement peut nécessiter de définir les dimensions du frein de mine avec des tolérances très strictes pour obtenir la force et la surface de contact adaptées. Dans un porte-mine conforme à la présente invention, les parties du frein de mine exerçant des forces de friction respectivement sur la mine et sur l'embout sont décalées angulairement. Ainsi, l'ajustement des forces de friction peut se faire sur des zones géométriquement indépendantes. Des tolérances plus importantes sont alors possibles et la modification d'une zone de friction a une influence limitée sur l'autre zone de friction. Par ailleurs, on connaît notamment du document US- A-5 462 376, des guide mines rétractables pour lesquels les frictions mine-guide mine et guide mine-embout sont réalisées par des ailettes venues de matière avec le corps du guide mine et présentent une élasticité structurelle de manière à venir respectivement en appui contre la mine et contre la surface interne de l'embout. Toutefois, outre la complexité géométrique et la difficulté d'ajustement des forces de friction, le fait que ces ailettes soient nécessairement réalisées en une matière plastique présentant une rigidité de surface supérieure à celle d'une matière de type caoutchouc, limite l'étendue des surfaces en contact et impose des forces de contact relativement élevées. Un tel guide mine nécessite donc des tolérances de fabrication réduites et est généralement plus sensible aux poussières de graphite créées par le passage de la mine qui peuvent modifier sensiblement les forces de friction. Dans des modes de réalisation de l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes : - le frein de mine, considéré perpendiculairement à l'axe X, a une forme oblongue, des zones de friction embout-frein de mine étant formées à chacune des extrémités de la forme oblongue ; - le frein de mine a une forme annulaire ; - le frein de mine est maintenu sur le guide mine entre deux épaulements ; - le conduit du guide mine comporte au moins une ouverture à travers laquelle le frein de mine coopère avec la mine, dans une zone de friction mine-guide mine ; - deux zones de friction embout-frein de mine diamétralement opposées sont prévues, et deux zones de friction mine-frein de mine diamétralement opposées sont prévues, lesdites zones de friction embout-frein de mine étant angulairement décalées d'environ 90 degrés par rapport aux zones de friction mine-frein de mine ; - le frein de mine a une forme de tore, avant sa mise en place sur le guide mine ; - le guide mine et le frein de mine forment une pièce monobloc constituée d'au moins deux matières ; - le guide mine présente au moins une portion en résine synthétique sur laquelle est surmoulé, de préférence par un procédé de bi-injection, le frein de mine en élastomère ; et - le guide mine forme l'extrémité avant d'une cartouche comprenant un mécanisme d'avance de mine et montée de manière amovible dans le corps. D'autres aspects, buts et avantages de l'invention apparaîtront à la lecture de la description d'un de ces modes de réalisation. L'invention sera également mieux comprise à l'aide des dessins sur lesquels : - la figure 1 représente schématiquement en coupe longitudinale un corps d'un exemple de mode de réalisation d'un porte-mine selon l'invention ; - la figure 2 représente schématiquement l'embout du porte-mine de la figure 1 ; - la figure 3 représente schématiquement en perspective un guide mine destiné à être monté dans un embout tel que celui représenté à la figure 2 ; - la figure 4 représente, vu de dessus, le guide mine de la figure 3 ; - la figure 5 représente schématiquement une coupe transversale du guide mine représenté à la figure 4 ; - la figure 6 représente schématiquement une coupe partielle du guide mine, représenté aux figures 3 à 5, monté dans un embout tel que celui de la figure 2 ; - la figure 7 correspond à un agrandissement de la figure 6 ; - la figure 8 représente schématiquement une cartouche porte-mine destinée à être logée dans un portemine selon un autre mode de réalisation de l'invention ; et - la figure 9 représente schématiquement en coupe, selon une vue analogue à celle de la figure 2, un embout, un guide mine et un frein de mine d'un porte-mine de l'art antérieur. Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires. Un exemple de porte-mine conforme à la présente invention est représenté sur la figure 1. Celui-ci comporte un corps 1 cylindrique s 'étendant longitudinalement selon un axe X. Ce corps 1 comporte une extrémité avant 2 et une extrémité arrière 3. Au niveau de l'extrémité avant 2, est monté un embout 4. Cet embout 4 comporte un guide mine 5. Ce guide mine 5 comporte un conduit 6 destiné à guider une mine en translation selon l'axe X et à la protéger en sortie de l'embout 4. Par la suite, le porte-mine selon l'invention ne sera décrit dans le détail qu'au niveau de son embout 4 et de son guide mine 5. En effet, le reste du mécanisme d'avance de mine (non représenté), dans le porte-mine, peut être de n'importe quel type connu de l'Homme du Métier. Comme représenté sur la figure 2, l'embout 4 a sensiblement une forme tronconique. Il comporte une première cavité 7 cylindrique de révolution autour de l'axe X. Cette première cavité 7 a un diamètre interne Di. Elle se poursuit vers la pointe de l'embout 4 par une deuxième cavité 8 cylindrique de révolution autour de l'axe X et de diamètre D2. Comme représenté sur les figures 2 à 4, le conduit 6 du guide mine 5 a une forme de cylindre de révolution autour de l'axe X avec un diamètre externe légèrement inférieur au diamètre D2 de la deuxième cavité 8. Le diamètre externe du conduit 6 et le diamètre D2 de la deuxième cavité sont adaptés pour que le guide mine 5 puisse être déplacé de façon guidée, mais sans effort, dans 1 ' embout 4. Le conduit 6 a un diamètre interne adapté pour que puisse s'y déplacer une mine 9, parallèlement à l'axe X, sans effort. Le guide mine 5 est réalisé avec des matières présentant une certaine rigidité de manière à présenter des dimensions géométriques stables qui permettent son coulissement sans blocage dans l'embout 4, ainsi que le guidage et le maintien de la mine 9 jusqu'à son extrémité avant. Le guide mine 5 peut être réalisé en matière plastique, par exemple en POM, en ABS ou en SAN, mais il peut être réalisé tout ou en partie en métal. Le guide mine 5 comporte un premier épaulement 10 retenant ce guide mine 5 dans la deuxième cavité 8. Un deuxième épaulement 11 est relié au premier épaulement 10 par deux ponts 12. Les premier 10 et deuxième 11 épaulements ont le même diamètre. Ce diamètre est adapté pour que les premier 10 et deuxième 11 épaulements coulissent dans la deuxième cavité 8 sans frottement. Les premier 10 et deuxième 11 épaulements ont une forme cylindrique de révolution autour de l'axe X. La distance entre le premier 10 et le deuxième 11 épaulements est inférieure à la différence entre le diamètre interne du conduit 6 et le diamètre externe des premier 10 et deuxième 11 épaulements. Ainsi, lorsqu'un frein de mine 13 initialement torique est inséré entre les premier 10 et deuxième 11 épaulements, si son diamètre correspond à l'écart entre ces épaulements, il dépassera nécessairement radialement de ceux-ci, en prenant une forme oblongue. Le frein de mine 13 est en élastomère, mais il pourrait être aussi en caoutchouc ou tout autre matière deformable élastiquement de manière à pouvoir venir épouser les surfaces avec lesquelles il doit créer une zone de friction. On notera que le frein de mine 13 sous forme torique est particulièrement aisé à produire, il peut même s'agir d'un élément standard. Mais, le frein de mine 13 peut avoir une forme différente de celle d'un tore. Il peut s'agit d'un anneau plat radialement et/ou en épaisseur. Comme représenté sur la figure 5, chaque pont 12 correspond à une portion de cylindre dont le diamètre interne est égal au diamètre interne du conduit 6 et dont le diamètre externe est 1,2 à 1,5 fois supérieur à ce diamètre interne. Les deux ponts 12 sont diamétralement opposés et sont espacés de manière à ménager deux ouvertures 14 également diamétralement opposées. Comme représenté sur la figure 6, lorsqu'un frein de mine 13 torique est inséré entre les premier 10 et deuxième 11 épaulements, celui-ci prend une forme oblongue du fait de l'épaisseur radiale des ponts 12. Le diamètre interne du frein de mine 13 est sensiblement égal au diamètre externe de la mine 9 et au diamètre interne du conduit 6. Le diamètre externe du frein de mine 13 est compris entre le diamètre externe des premier 10 et deuxième 11 épaulements et le diamètre interne D2 de la deuxième cavité 8. Ainsi, lorsque le frein de mine 13 est placé entre les premier 10 et deuxième 11 épaulements, il est déformé du fait de l'épaisseur radiale des ponts 12. Comme représenté sur la figure 7, le frein de mine 13 exerce ainsi une pression, selon un axe Y, sur la face interne de la deuxième cavité 8. De même, grâce aux ouvertures 14, le frein de mine 13 exerce une pression, selon un axe Z, sur la mine 9. La distance D, définissant la dimension du frein de mine 13 selon l'axe Z, est adaptée pour qu'il n'y ait pas, selon la direction correspondante, de contact entre le frein de mine 13 et l'embout 4. La distance D' correspondant à la dimension du frein de mine 13 selon l'axe Y, lorsqu'il est en place sur le guide mine 5, est adaptée pour que le frein de mine 13 soit en contact avec l'embout 4. Néanmoins, le frein de mine 13 possède un diamètre, lorsqu'il n'est pas monté sur le guide mine 5, inférieur au diamètre interne D2 de la deuxième cavité 8. On obtient donc une zone de friction F' entre l'embout 4 et le frein de mine 13. Le diamètre d correspond au diamètre de la mine 9.The present invention relates to mechanical pencils with retractable lead guide. More particularly, the invention relates to a mechanical pencil of the type comprising: a body extending longitudinally along an axis X between a front writing end and a rear end, - a tip located at the front end, a mine guide retractable in the tip, comprising a conduit for the passage of a mine and its guiding in translation along the X axis; and a mine brake made of elastically deformable material and connected to the mine guide, said mine brake comprising at least one mine-mine brake friction zone, limiting the displacement of the mine in the mine guide, and at least one friction zone mine brake tip, limiting the movement of the mine guide in the tip. Document EP-A-1 125 763 describes an example of such a mechanical pencil. According to this document and as shown in FIG. 9, the lead guide 5 comprises a conduit 6 made in one piece with a cup 21 in which is placed a lead brake 13 made of rubber, that is to say an elastically deformable material. This mine brake 13 comprises a ring 20 inserted in the cup 21 and a ring 22 projecting from the cup 21 and extending radially outwards, that is to say towards the end piece 4. The part of the brake lead 13 corresponding to the ring 20 exerts a circular and continuous pressure on the external surface of the mine. The part of the lead brake 13 corresponding to the crown 22 also exerts a circularly continuous and uniform pressure on the internal surface of the end piece 4. The invention differs from this mechanical pencil of the art anterior in particular by the fact that each mine-mine friction friction zone is angularly offset around the axis X with respect to each mine tip-mine friction zone. Thanks to this arrangement, it is possible to manufacture mechanical pencils of the type indicated above in a simple manner, since the dimensional tolerances of the mechanical brake, or even the mechanical guide, may be less strict than for mechanical pencils of the prior art. Indeed, in this type of mechanical pencil, it is generally desired that the pencil is braked in the pencil guide so that it does not fall from the pencil when the advance clamp of the pencil is open. It is also desired that the retractable lead guide is also braked so as not to debate freely in the tip. However, the friction between the retractable lead guide and the tip must not be excessive, in order to allow a slight retreat of the lead guide when the lead is worn so as to release the front end of the lead and continue writing. In addition, it is preferable that the friction force between the lead and the lead guide is less than the friction force between the lead guide and the tip to allow the user to push the lead back into the mechanical pencil if it it came out of excessive length, without however causing a retraction of the mine guide. These two types of friction force must therefore be precisely adjusted to obtain satisfactory user comfort. This type of adjustment may require defining the dimensions of the mine brake with very strict tolerances to obtain the appropriate force and contact surface. In a mechanical pencil in accordance with the present invention, the parts of the mine brake exerting friction forces on the lead and on the tip respectively are angularly offset. Thus, the adjustment of the friction forces can be done on geometrically zones independent. Larger tolerances are then possible and the modification of one friction zone has a limited influence on the other friction zone. Furthermore, document US-A-5 462 376 is known in particular for retractable lead guides for which the mine guide mine leads and mine guide tips are produced by fins made of material with the body of the lead guide and have a structural elasticity so as to bear respectively against the mine and against the internal surface of the endpiece. However, in addition to the geometric complexity and the difficulty of adjusting the friction forces, the fact that these fins are necessarily made of a plastic material having a surface stiffness greater than that of a rubber-like material, limits the extent of the surfaces in contact and imposes relatively high contact forces. Such a mine guide therefore requires reduced manufacturing tolerances and is generally more sensitive to graphite dust created by the passage of the mine which can significantly modify the friction forces. In embodiments of the invention, one can optionally have recourse to one and / or the other of the following arrangements: - the mine brake, considered perpendicular to the axis X, has an oblong shape , mine tip-brake friction zones being formed at each of the ends of the oblong shape; - the mine brake has an annular shape; - the mine brake is held on the mine guide between two shoulders; - The lead of the mine guide comprises at least one opening through which the mine brake cooperates with the mine, in a mine-guide mine friction zone; - two diametrically opposed tip-brake mine friction zones are provided, and two diametrically opposite mine-brake mine friction zones are provided provided, said tip-mine brake friction zones being angularly offset by approximately 90 degrees relative to the mine-mine brake friction zones; - the mine brake has the shape of a torus, before its installation on the mine guide; - the mine guide and the mine brake form a single piece made of at least two materials; - The mine guide has at least one portion of synthetic resin on which is overmolded, preferably by a bi-injection process, the mine brake made of elastomer; and - the lead guide forms the front end of a cartridge comprising a lead advance mechanism and removably mounted in the body. Other aspects, aims and advantages of the invention will appear on reading the description of one of these embodiments. The invention will also be better understood using the drawings in which: - Figure 1 shows schematically in longitudinal section a body of an exemplary embodiment of a mechanical pencil according to the invention; - Figure 2 schematically shows the tip of the mechanical pencil of Figure 1; - Figure 3 shows schematically in perspective a mine guide intended to be mounted in a tip such as that shown in Figure 2; - Figure 4 shows, seen from above, the mine guide of Figure 3; - Figure 5 schematically shows a cross section of the mine guide shown in Figure 4; - Figure 6 schematically shows a partial section of the lead guide, shown in Figures 3 to 5, mounted in a tip such as that of Figure 2; - Figure 7 corresponds to an enlargement of Figure 6; - Figure 8 schematically shows a mechanical cartridge intended to be housed in a mechanical pencil according to another embodiment of the invention; and - Figure 9 shows schematically in section, in a view similar to that of Figure 2, a tip, a lead guide and a lead brake of a mechanical pencil of the prior art. In the various figures, the same references designate identical or similar elements. An example of a mechanical pencil in accordance with the present invention is shown in FIG. 1. This comprises a cylindrical body 1 extending longitudinally along an axis X. This body 1 has a front end 2 and a rear end 3. Au level of the front end 2, a tip 4 is mounted. This tip 4 comprises a lead guide 5. This lead guide 5 comprises a conduit 6 intended to guide a mine in translation along the axis X and to protect it at the outlet of the tip 4. Subsequently, the mechanical pencil according to the invention will only be described in detail at its tip 4 and its lead guide 5. In fact, the rest of the lead mechanism (not shown), in the mechanical pencil, can be of any type known to those skilled in the art. As shown in Figure 2, the tip 4 has a substantially frustoconical shape. It comprises a first cylindrical cavity 7 of revolution around the axis X. This first cavity 7 has an internal diameter Di. It continues towards the tip of the nozzle 4 by a second cylindrical cavity 8 of revolution around the axis X and of diameter D 2 . As shown in FIGS. 2 to 4, the conduit 6 of the lead guide 5 has the shape of a cylinder of revolution around the axis X with an external diameter slightly less than the diameter D 2 of the second cavity 8. The external diameter of the conduit 6 and the diameter D 2 of the second cavity are adapted so that the guide mine 5 can be moved in a guided manner, but without effort, in one end piece 4. The conduit 6 has an internal diameter adapted so that a mine 9 can move there, parallel to the axis X, without effort. The mine guide 5 is produced with materials having a certain rigidity so as to have stable geometrical dimensions which allow it to slide without blocking in the end piece 4, as well as guiding and holding the mine 9 up to its front end. . The mine guide 5 can be made of plastic, for example POM, ABS or SAN, but it can be made wholly or partly of metal. The lead guide 5 has a first shoulder 10 retaining this lead guide 5 in the second cavity 8. A second shoulder 11 is connected to the first shoulder 10 by two bridges 12. The first 10 and second 11 shoulders have the same diameter. This diameter is adapted so that the first 10 and second 11 shoulders slide in the second cavity 8 without friction. The first 10 and second 11 shoulders have a cylindrical shape of revolution around the axis X. The distance between the first 10 and the second 11 shoulders is less than the difference between the internal diameter of the conduit 6 and the external diameter of the first 10 and second 11 shoulders. Thus, when an initially toroidal mine brake 13 is inserted between the first 10 and second 11 shoulders, if its diameter corresponds to the distance between these shoulders, it will necessarily protrude radially from these, taking an oblong shape. The mine brake 13 is made of elastomer, but it could also be made of rubber or any other elastically deformable material so as to be able to marry the surfaces with which it must create a friction zone. Note that the mine brake 13 in toroidal form is particularly easy to produce, it can even be a standard item. However, the mine brake 13 may have a shape different from that of a torus. It can be a flat ring radially and / or thick. As shown in FIG. 5, each bridge 12 corresponds to a portion of cylinder whose internal diameter is equal to the internal diameter of the conduit 6 and whose external diameter is 1.2 to 1.5 times greater than this internal diameter. The two bridges 12 are diametrically opposite and are spaced so as to provide two openings 14 also diametrically opposite. As shown in FIG. 6, when a toric mine brake 13 is inserted between the first 10 and second 11 shoulders, it takes an oblong shape due to the radial thickness of the bridges 12. The internal diameter of the brake mine 13 is substantially equal to the external diameter of mine 9 and to the internal diameter of conduit 6. The external diameter of mine brake 13 is between the external diameter of the first 10 and second 11 shoulders and the internal diameter D 2 of the second cavity 8. Thus, when the mine brake 13 is placed between the first 10 and second 11 shoulders, it is deformed due to the radial thickness of the bridges 12. As shown in FIG. 7, the mine brake 13 thus exercises a pressure, along an axis Y, on the internal face of the second cavity 8. Likewise, thanks to the openings 14, the mine brake 13 exerts a pressure, along an axis Z, on the mine 9. The distance D, defining brake dimension of min e 13 along the Z axis, is adapted so that there is not, in the corresponding direction, contact between the mine brake 13 and the nozzle 4. The distance D 'corresponding to the dimension of the brake lead 13 along the Y axis, when it is in place on the lead guide 5, is adapted so that the lead brake 13 is in contact with the tip 4. Nevertheless, the lead brake 13 has a diameter, when not mounted on the lead guide 5, less than the internal diameter D 2 of the second cavity 8. A friction zone F ′ is therefore obtained between the end piece 4 and the lead brake 13. The diameter d corresponds to the diameter of the mine 9.
Ce diamètre d est supérieur à la distance d' qui séparerait les zones du frein de mine 13, séparant les ouvertures 14, selon l'axe Z. Ainsi, la différence d" entre le diamètre d de la mine 9 et la distance d' est telle que la mine 9 dépasse des ouvertures 14 définissant ainsi une zone de friction F entre la mine 9 et le frein de mine 13. Les forces de friction exercées entre l'embout 4 et le frein de mine 13 au niveau des zones de friction F' sont inférieures aux forces de friction exercées entre la mine 9 et le frein de mine 13, au niveau des zones de friction F. On obtient ainsi deux zones de friction embout- frein de mine F' diamétralement opposées et deux zones de friction mine-frein de mine F également diamétralement opposées mais décalées angulairement de 90 degrés par rapport aux zones de friction embout-frein de mine F' . Cette disposition des zones de friction assurent une symétrie à la fois des forces de freinage de la mine et des forces de freinage du guide, mine 5 dans l'embout 4, tout en assurant un certain découplage entre les zones du frein de mine assurant les différentes frictions et en limitant la complexité du guide mine 5 et du frein de mine 13. Dans un autre mode de réalisation, représenté à la figure 8, le guide mine 5 peut faire partie intégrante d'une cartouche porte-mine 25. La cartouche porte-mine 25 comprend, outre le guide mine 5, un manchon 27 dans lequel est logé un mécanisme d'avance de mine, comme par exemple un mécanisme connu comprenant une pince dont la tête de serrage coopère avec une bague, et un tube 28 se prolongeant jusqu'à l'extrémité arrière du porte-mine, qui forme un réservoir pour les mines et permet de transmettre au mécanisme d'avance l'action de l'utilisateur exercée sur un bouton, non représenté, situé à l'extrémité arrière du porte-mine. Cette cartouche 25 est montée de manière amovible dans un porte-mine tel que celui représenté à la figure 1 qui comprend un corps 1 et un embout 4. Tout comme dans le précédent mode de réalisation, le guide mine 5 comporte un frein de mine 13 réalisé en élastomère. Dans ce mode de réalisation, le frein de mine 13 est directement moulé sur le guide mine 5 réalisé en matière plastique. De préférence, le surmoulage du frein de mine 13 est réalisé par un procédé de bi-injection, c'est-à-dire que le guide mine 5 est réalisé par une première injection de matière thermoplastique dans un moule comportant un noyau pour former le conduit 6, puis l' élastomère est injecté dans ce moule sans retirer le noyau pour former le frein de mine 13. Comme dans le précédent mode de réalisation, le frein de mine 13 présente une forme oblongue dont les extrémités diamétralement opposées font saillie du guide mine 5 et forment les zones de friction embout-frein de mine F'. Des ouvertures, non visibles sur la figure 8, sont également prévues à travers le guide mine 5 pour que le frein de mine 13 forme une partie de la paroi du conduit 6 et vienne en contact avec la mine 9 pour freiner son déplacement. Les zones de friction embout-frein de mine F' peuvent freiner la rétractation du guide mine 5 si l'ensemble de la cartouche 25 est mobile sur une certaine distance dans le corps du porte-mine, ou si le guide mine 5 est monté mobile longitudinalement sur une certaine distance par rapport au manchon 27. Mais les zones de friction embout-frein de mine F' permettent aussi d'immobiliser la cartouche dans le corps du porte-mine s'il existe un certain jeu entre l'extrémité arrière du tube réservoir 28 et le bouton de commande agissant sur cette extrémité. Ainsi, il est possible d'éviter des bruits de cliquetis de la cartouche 25 dans le porte-mine. Bien entendu, ces modes de réalisation ne sont nullement limitatifs et leurs différentes caractéristiques peuvent être combinées. Par exemple, pour le premier mode de réalisation, l'embout 4 et le corps 1 peuvent former une pièce monobloc. De même, pour ce premier mode de réalisation, le guide mine 5 et le frein de mine 13 peuvent être constitués d'une pièce monobloc, formée à partir de deux matières, un thermoplastique et un élastomère respectivement, par bi-injection. This diameter d is greater than the distance d 'which would separate the zones of the mine brake 13, separating the openings 14, along the axis Z. Thus, the difference d "between the diameter d of the mine 9 and the distance d is such that the mine 9 protrudes from the openings 14 thus defining a friction zone F between the mine 9 and the mine brake 13. The friction forces exerted between the nozzle 4 and the mine brake 13 at the friction zones F 'are less than the friction forces exerted between the mine 9 and the mine brake 13, at the level of the friction zones F. There are thus obtained two friction tip-brake mine zones F' diametrically opposite and two mine friction zones - mine brake F also diametrically opposite but angularly offset by 90 degrees with respect to the friction zones tip-brake of mine F '. This arrangement of the friction zones ensures symmetry of both the braking forces of the mine and the forces braking g uide, mine 5 in the tip 4, while ensuring a certain decoupling between the areas of the mine brake ensuring the different frictions and limiting the complexity of the mine guide 5 and the mine brake 13. In another embodiment, shown in FIG. 8, the mechanical guide 5 can be an integral part of a mechanical cartridge 25. The mechanical cartridge 25 comprises, in addition to the mechanical guide 5, a sleeve 27 in which is housed a mechanism for advancing mine, such as for example a known mechanism comprising a clamp whose clamping head cooperates with a ring, and a tube 28 extending to the rear end of the mechanical pencil, which forms a reservoir for the mines and makes it possible to transmit to the advance mechanism the action of the user exerted on a button, not shown, located at the rear end of the mechanical pencil. This cartridge 25 is removably mounted in a mechanical pencil such as that shown in FIG. 1 which comprises a body 1 and a tip 4. Just as in the previous embodiment, the mine guide 5 includes a pencil brake 13 made of elastomer. In this embodiment, the lead brake 13 is directly molded on the lead guide 5 made of plastic. Preferably, the overmolding of the lead brake 13 is produced by a bi-injection process, that is to say that the mine guide 5 is carried out by a first injection of thermoplastic material into a mold comprising a core to form the conduit 6, then the elastomer is injected into this mold without removing the core to form the lead brake 13. As in the previous embodiment, the lead brake 13 has an oblong shape whose diametrically opposite ends protrude from the guide mine 5 and form the tip-brake friction zones of mine F '. Openings, not visible in FIG. 8, are also provided through the lead guide 5 so that the lead brake 13 forms part of the wall of the conduit 6 and comes into contact with the lead 9 to slow its movement. The lead tip-brake friction zones F ′ can slow the retraction of the lead guide 5 if the cartridge assembly 25 is movable over a certain distance in the body of the mechanical pencil, or if the lead guide 5 is mounted mobile longitudinally over a certain distance with respect to the sleeve 27. However, the mine tip-brake friction zones F ′ also make it possible to immobilize the cartridge in the body of the mechanical pencil if there is a certain clearance between the rear end of the reservoir tube 28 and the control button acting on this end. It is thus possible to avoid noise from rattling of the cartridge 25 in the mechanical pencil. Of course, these embodiments are in no way limiting and their various characteristics can be combined. For example, for the first embodiment, the end piece 4 and the body 1 can form a single piece. Likewise, for this first embodiment, the lead guide 5 and the lead brake 13 may consist of a single piece, formed from two materials, a thermoplastic and an elastomer respectively, by bi-injection.

Claims

REVENDICATIONS
1. Porte-mine comportant : un corps (1) s ' étendant longitudinalement selon un axe X entre une extrémité avant (2) d'écriture et une extrémité arrière (3) , un embout (4) situé au niveau de l'extrémité avant (2) , un guide mine (5) rétractable dans l'embout (4), comportant un conduit (6) pour le passage d'une mine (9) et son guidage en translation selon l'axe X, et - un frein de mine (13) en matière élastiquement deformable et relié au guide mine, ledit frein de mine (13) comportant au moins une zone de friction mine-frein de mine (F'), limitant le déplacement de la mine (9) dans le guide mine (13), et au moins une zone de friction embout-frein de mine (F), limitant le déplacement du guide mine (9) dans 1 ' embout ( 4 ) , caractérisé par le fait que chaque zone de friction mine- frein de mine (F) est décalée angulairement autour de l'axe X par rapport à chaque zone de friction embout-frein de mine (F' ) . 1. Mechanical pencil comprising: a body (1) extending longitudinally along an axis X between a front end (2) of writing and a rear end (3), a tip (4) located at the end before (2), a mine guide (5) retractable in the end piece (4), comprising a conduit (6) for the passage of a mine (9) and its guiding in translation along the X axis, and - a mine brake (13) of elastically deformable material and connected to the mine guide, said mine brake (13) comprising at least one mine-mine brake friction zone (F '), limiting the displacement of the mine (9) in the mine guide (13), and at least one mine tip-brake friction zone (F), limiting the movement of the mine guide (9) in the tip (4), characterized in that each mine friction area - mine brake (F) is angularly offset around the X axis with respect to each mine tip-brake friction zone (F ').
2. Porte-mine selon la revendication 1, dans lequel le frein de mine (13), considéré perpendiculairement à l'axe X, a une forme oblongue, des zones de friction embout-frein de mine (F') étant formées à chacune des extrémités de la forme oblongue. 2. Mechanical pencil according to claim 1, in which the mechanical brake (13), considered perpendicular to the axis X, has an oblong shape, friction zones between tip and mechanical brake (F ') being formed at each. ends of the oblong shape.
3. Porte-mine selon l'une des revendications précédentes, dans lequel le frein de mine (13) a une forme annulaire. 3. Mechanical pencil according to one of the preceding claims, wherein the mechanical brake (13) has an annular shape.
4. Porte-mine selon l'une des revendications précédentes, dans lequel le frein de mine (13) est maintenu sur le guide mine (5) entre deux épaulements (10,11). 4. Mechanical pencil according to one of the preceding claims, in which the mechanical brake (13) is held on the mechanical guide (5) between two shoulders (10,11).
5. Porte-mine selon l'une des revendications précédentes, dans lequel le conduit (6) du guide mine (5) comporte au moins une ouverture (14) à travers laquelle le frein de mine (13) coopère avec la mine (9), dans une zone de friction mine-guide mine F. 5. Mechanical pencil according to one of the preceding claims, in which the conduit (6) of the lead guide (5) has at least one opening (14) through which the mine brake (13) cooperates with mine (9), in a mine-guide friction zone mine F.
6. Porte-mine selon l'une quelconque des revendications précédentes, dans lequel deux zones de friction embout-frein de mine (F1) diamétralement opposées sont prévues, et dans lequel deux zones de friction mine- frein de mine (F) diamétralement opposées sont prévues, lesdites zones de friction embout-frein de mine (F') étant angulairement décalées d'environ 90 degrés par rapport aux zones de friction mine-frein de mine. 6. Mechanical pencil according to any one of the preceding claims, in which two diametrically opposed tip-mine friction friction zones (F 1 ) are provided, and in which two diametrically opposed mine-mine brake friction zones (F 1 ) opposite are provided, the said tip-mine brake friction zones (F ') being angularly offset by approximately 90 degrees relative to the mine-mine brake friction zones.
7. Porte-mine selon l'une des revendications précédentes, dans lequel le frein de mine (13) a une forme de tore, avant sa mise en place sur le guide mine (5). 7. Mechanical pencil according to one of the preceding claims, in which the mechanical brake (13) has the shape of a torus, before its installation on the mechanical guide (5).
8. Porte-mine selon l'une des revendications 1 à 6, dans lequel le guide mine (5) et le frein de mine (13) forment une pièce monobloc constituée d'au moins deux matières . 8. Mechanical pencil according to one of claims 1 to 6, wherein the mine guide (5) and the mine brake (13) form a single piece made of at least two materials.
9. Porte-mine selon la revendication 8, dans lequel le guide mine (5) présente au moins une portion en résine synthétique sur laquelle est surmoulé, de préférence par un procédé de bi-injection, le frein de mine (13) en élastomère . 9. Mechanical pencil according to claim 8, in which the mechanical guide (5) has at least one portion of synthetic resin on which is molded, preferably by a bi-injection process, the mechanical brake (13) made of elastomer. .
10. Porte-mine selon l'une des revendications précédentes, dans lequel le guide mine (5) forme l'extrémité avant d'une cartouche (25) comprenant un mécanisme d'avance de mine et montée de manière amovible dans le corps (1) . 10. Mechanical pencil according to one of the preceding claims, in which the mine guide (5) forms the front end of a cartridge (25) comprising a lead mechanism and removably mounted in the body ( 1).
EP05730734A 2004-02-24 2005-02-22 Mechanical pencil comprising a retractable lead guide Active EP1718478B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401844A FR2866598B1 (en) 2004-02-24 2004-02-24 MINE HOLDER WITH RETRACTABLE MINE GUIDE
PCT/FR2005/000412 WO2005090093A1 (en) 2004-02-24 2005-02-22 Mechanical pencil comprising a retractable lead guide

Publications (2)

Publication Number Publication Date
EP1718478A1 true EP1718478A1 (en) 2006-11-08
EP1718478B1 EP1718478B1 (en) 2008-04-30

Family

ID=34834008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05730734A Active EP1718478B1 (en) 2004-02-24 2005-02-22 Mechanical pencil comprising a retractable lead guide

Country Status (15)

Country Link
US (1) US20070172299A1 (en)
EP (1) EP1718478B1 (en)
JP (1) JP2007522975A (en)
KR (1) KR20070026427A (en)
CN (1) CN100453339C (en)
AU (1) AU2005223417A1 (en)
BR (1) BRPI0507965A (en)
CA (1) CA2557282A1 (en)
DE (1) DE602005006390T2 (en)
ES (1) ES2306127T3 (en)
FR (1) FR2866598B1 (en)
MX (1) MXPA06009618A (en)
RU (1) RU2365512C2 (en)
WO (1) WO2005090093A1 (en)
ZA (1) ZA200607245B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8016830B2 (en) * 2006-01-19 2011-09-13 Warsaw Orthopedic, Inc. Devices and methods for grasping an elongated medical element

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664753A (en) * 1969-07-18 1972-05-23 Tatsuzo Minagawa Pushbutton type mechanical pencil
US4884910A (en) * 1987-04-17 1989-12-05 Kotobuki & Co., Ltd. Mechanical pencil
CN2152671Y (en) * 1992-12-15 1994-01-12 郝钰 Core for continuously propelling pencil
US5462376A (en) * 1994-02-16 1995-10-31 Kotobuki & Co., Ltd. Mechanical pencil with improved slider mechanism
JP2001225587A (en) * 2000-02-16 2001-08-21 Kotobuki:Kk Propelling pencil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005090093A1 *

Also Published As

Publication number Publication date
AU2005223417A1 (en) 2005-09-29
ES2306127T3 (en) 2008-11-01
RU2006133935A (en) 2008-03-27
CA2557282A1 (en) 2005-09-29
JP2007522975A (en) 2007-08-16
FR2866598B1 (en) 2008-04-04
EP1718478B1 (en) 2008-04-30
MXPA06009618A (en) 2006-12-19
DE602005006390T2 (en) 2009-05-20
KR20070026427A (en) 2007-03-08
WO2005090093A1 (en) 2005-09-29
RU2365512C2 (en) 2009-08-27
DE602005006390D1 (en) 2008-06-12
CN100453339C (en) 2009-01-21
FR2866598A1 (en) 2005-08-26
BRPI0507965A (en) 2007-07-17
US20070172299A1 (en) 2007-07-26
ZA200607245B (en) 2008-06-25
CN1922036A (en) 2007-02-28

Similar Documents

Publication Publication Date Title
EP2084018A2 (en) Cap-less writing instrument
EP1776243B1 (en) Mechanism for a writing instrument, writing instrument comprising one such mechanism, and production method
EP1784271B1 (en) Boring head
FR2845741A1 (en) RIVET WITH ELASTIC LEGS
FR2889483A1 (en) "HOOD WITH A COSMETIC PENCIL SIZE, AND COSMETIC PENCIL EQUIPPED WITH SUCH A HOOD"
FR2683164A1 (en) LIQUID APPLICATOR.
EP1796917A1 (en) Writing instrument
EP1718478B1 (en) Mechanical pencil comprising a retractable lead guide
EP2234818A2 (en) Writing instrument with eraser protected by a sleeve
FR3089767A1 (en) COSMETIC APPLICATION DEVICE AND MANUFACTURING METHOD OF SUCH COSMETIC APPLICATION DEVICE
EP1827869B1 (en) Writing instrument comprising a cartridge holder
FR3027639A1 (en) UNIVERSAL EXPANSION ANKLE
WO2005039888A2 (en) Writing instrument with a lateral button
WO2002014705A1 (en) Device for coupling a lever to a shift cylinder piston
FR2847479A1 (en) Needle holder positioning structure for safety hypodermic syringe, comprises barrel, needle holder, and locating ring
FR2607201A1 (en) Device for fixing onto a threaded or ringed shaft
FR3050150A1 (en) ROTARY CONTROL BUTTON DEVICE AND AERATOR COMPRISING SUCH A DEVICE
FR2861331A1 (en) Propelling pencil, has sleeve arranged between clamp ring and front end of spring and moving longitudinally with respect to clamp and pencil body, where spring hooks clamp ring against clamp head
FR2976213A1 (en) WRITING INSTRUMENT, IN PARTICULAR A MARKER, WITH REFRIGERATING TANK UNIT
EP2825394A1 (en) Lead holder having a slidable push member
EP3983159A1 (en) Drilling tool
FR2982545A1 (en) Headrest for seat of motor vehicle, has grip fitted on metallic tubular structure in central part so as to enclose tubular structure, so that reinforcement plate is mounted in articulation with respect to structure
FR3054870A1 (en) CONTROL LEVER
FR2899842A1 (en) Writing instrument e.g. mechanical pencil, has radial protrusion integrated to body, and cut provided at rear end of cylindrical rear part of writing head, where longitudinal depth of cut is equal to protrusion`s longitudinal height
FR3080882A1 (en) PAUMELLE AND ARTICULATION SYSTEM AND CARPENTRY HAVING SUCH A JOINT SYSTEM

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060817

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB GR IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB GR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB GR IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 602005006390

Country of ref document: DE

Date of ref document: 20080612

Kind code of ref document: P

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20080401868

Country of ref document: GR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2306127

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090202

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090226

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090227

Year of fee payment: 5

Ref country code: GR

Payment date: 20090227

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090331

Year of fee payment: 5

Ref country code: IT

Payment date: 20090224

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090703

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100222

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100222

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100223