EP0920957A1 - Tangential polishing head for lapping granit and glazed stone - Google Patents

Tangential polishing head for lapping granit and glazed stone Download PDF

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Publication number
EP0920957A1
EP0920957A1 EP98121669A EP98121669A EP0920957A1 EP 0920957 A1 EP0920957 A1 EP 0920957A1 EP 98121669 A EP98121669 A EP 98121669A EP 98121669 A EP98121669 A EP 98121669A EP 0920957 A1 EP0920957 A1 EP 0920957A1
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EP
European Patent Office
Prior art keywords
movement
arm
pin
journal
tangential
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.)
Withdrawn
Application number
EP98121669A
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German (de)
French (fr)
Inventor
Francesco Gnoatto
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.)
Synergy Sarda SNC
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Synergy Sarda SNC
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Filing date
Publication date
Application filed by Synergy Sarda SNC filed Critical Synergy Sarda SNC
Publication of EP0920957A1 publication Critical patent/EP0920957A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B24B41/0475—Grinding heads for working on plane surfaces equipped with oscillating abrasive blocks, e.g. mounted on a rotating head

Definitions

  • the object of the present invention is to produce a head of the tangential type, capable of polish granite or glazed stoneware.
  • This movement allows the abrasive to work on the material only along a line of qualified contact tangential.
  • a cam mechanism is provided on which a roller which circulates which drives a lever so as to impart the pendulum movement to the arm which performs the Polishing of the material.
  • a mechanism to tilting tilting platform causes a lever which, in turn, prints the pendulum movement to the arm.
  • a plate mechanism which moves eccentrically relative to the axis of the head and imparts the movement pendulum to a pin which, in turn, communicates the movement to the swinging arm.
  • the invention proposes to produce a trangential polishing head making it possible to overcome these various drawbacks. This is resolved in accordance with the characteristics of the characterizing part of claim 1.
  • the mechanism used to print the pendulum abrasive movement has a series of satellite gears set in motion by a central gear, gears which have an eccentric hole inside which is provided a cross joint which prints to the trunnion the pendulum movement which, in turn, is transmitted to the arm and consequently to the abrasive.
  • the pin 3, integral with the carcass 1, maintains the fixed part of the head, while the shaft 4 is connected to the rotary part thereof.
  • the external gear 5 turns idly on the axis 9 of the eccentric 7, integral of the fixed part of the head, and it is in turn connected to the internal gear 6, secured to the part of the head which rotates around its own vertical axis 10.
  • the number of turns of the head which corresponds to the number of turns of the gear to internal gear 6, corresponds to a greater number of revolutions of the gear exterior 5.
  • the gear 5 which rotates in the eccentric position 9 by relative to the axis 10 of the head drives the gear 11, aligned with the axis 10 of the head.
  • This mechanism allows two degrees of freedom of movement to move the pin 15 reciprocating from side to side.
  • the abrasive 18 takes the form of a circular sector, so that the abrasive 18 is always in contact with the material, along a tangential line.
  • Each individual arm 17 is set in motion by a satellite gear 12 (Fig. 2 and 3), so that it is possible to obtain the movement of the arms in a simultaneous mode, sequential or alternating, depending on the meshing position of the satellite gears 12 with respect to to the central gear 11.
  • Figs. 5, 6 and 7 we can see schematically the position that the arms take with the work movement.
  • the arms from 21 to 26 are all in the same position, moving simultaneously, first in one direction, then in the opposite direction.
  • the arms from 21 to 26 are animated in a sequential movement which gets, for example, when the next arm is positioned relative to the previous arm of such that a complete cycle is formed between the first arm and the last.
  • pairs have been shown in symmetrical positions, for example, the pair of arms 21 and 22 is in the radial position while the second pair 23 and 24 has intermediate angular displacements and that the arms 25 and 26 are represented with angular displacements in the extreme position.
  • the arms may be in a number other than six, for example four or eight, without for this to leave the field of the invention.

Abstract

The polishing head has at least one arm (17) with an abrasive surface (18). It contains a central gear (11) driving at least one satellite gear (12) with an eccentric hole for a journal (15) which is able to move relative to receiving members (13,14) to convert the rotary motion of the central gear into a reciprocating movement by the arm. The receiving members for the journal are in the form of large (13) and small (14) cylinders with orthogonal axes, the small one having a journal drive cavity. The cylinders are designed to provide several degrees of liberty to the movement of the journal, with the small diameter cylinder turning inside the large one and adapting to the position of the journal and allowing it to turn in the drive cavity.

Description

La présente invention a pour but de réaliser une tête du type tangentiel, apte à effectuer le lustrage du granit ou du grès émaillé.The object of the present invention is to produce a head of the tangential type, capable of polish granite or glazed stoneware.

Il est connu d'utiliser des têtes tangentielles pour lustrer le granit et le grès émaillé. Une caractéristique particulière de ces têtes réside dans le fait que l'abrasif accroché sous les bras porte-abrasif est non seulement animé d'un mouvement rotatif imprimé par la rotation de la tête, mais présente aussi un mouvement pendulaire imprimé par le mouvement alternatif du bras.It is known to use tangential heads to polish granite and sandstone enameled. A special feature of these heads is that the abrasive attached under the abrasive holder arms is not only animated by a rotary movement impressed by the rotation of the head, but also presents a pendulum movement impressed by the movement arm alternative.

Ce mouvement ne permet à l'abrasif de travailler sur la matière que selon une ligne de contact qualifiée de tangentielle.This movement allows the abrasive to work on the material only along a line of qualified contact tangential.

Différents types de têtes sont actuellement connus dans les machines pour le lustrage du granit et du grès émaillé.Different types of heads are currently known in machines for buffing granite and glazed sandstone.

En particulier, il est prévu un mécanisme à came sur lequel circule un galet qui entraíne un levier de manière à imprimer le mouvement pendulaire au bras qui effectue le lustrage de la matière.In particular, a cam mechanism is provided on which a roller which circulates which drives a lever so as to impart the pendulum movement to the arm which performs the Polishing of the material.

Dans une deuxième forme de réalisation possible, il est prévu qu'un mécanisme à plateau incliné basculant entraíne un levier qui, à son tour, imprime le mouvement pendulaire au bras.In a second possible embodiment, it is provided that a mechanism to tilting tilting platform causes a lever which, in turn, prints the pendulum movement to the arm.

Dans une troisième forme de réalisation connue, il est prévu un mécanisme à plateau qui se déplace excentriquement par rapport à l'axe de la tête et imprime le mouvement pendulaire à un tourillon qui, à son tour, communique le mouvement au bras oscillant.In a third known embodiment, a plate mechanism is provided which moves eccentrically relative to the axis of the head and imparts the movement pendulum to a pin which, in turn, communicates the movement to the swinging arm.

Tous ces types de têtes tangentielles mobiles exigent des mouvements très compliqués et des vitesses qui impliquent de grands frais d'usinage et des grandes contraintes dans les parties constitutives de la machine. All these types of movable tangential heads require very complicated and speeds that involve large machining costs and great constraints in the component parts of the machine.

L'invention se propose de réaliser une tête trangentielle de polissage permettant de pallier ces différents inconvénients. Ceci est résolu conformément aux caractéristiques de la partie caractérisante de la revendication 1.The invention proposes to produce a trangential polishing head making it possible to overcome these various drawbacks. This is resolved in accordance with the characteristics of the characterizing part of claim 1.

Le mécanisme utilisé pour imprimer le mouvement pendulaire à l'abrasif présente une série d'engrenages satellites mis en mouvement par un engrenage central, engrenages qui présentent un trou excentrique à l'intérieur duquel est prévu un joint à croisillon qui imprime au tourillon le mouvement pendulaire qui, à son tour, se transmet au bras et par conséquent à l'abrasif.The mechanism used to print the pendulum abrasive movement has a series of satellite gears set in motion by a central gear, gears which have an eccentric hole inside which is provided a cross joint which prints to the trunnion the pendulum movement which, in turn, is transmitted to the arm and consequently to the abrasive.

Ceci permet d'effectuer un travail nettement meilleur que dans l'art antérieur sur la matière à polir et à une vitesse nettement inférieure, puisqu'il n'y a pas de masses qui se déplacent avec une rotation excentrique et qui déséquilibreraient la tête, sans que celle-ci ne soit animée de mouvements verticaux.This allows work to be carried out much better than in the prior art on the material to be polished and at a much lower speed, since there are no masses which move with an eccentric rotation and that would unbalance the head, without it be animated by vertical movements.

Les caractéristiques de l'invention seront mieux décrites à l'aide des planches de dessins annexées sur lesquelles :

  • la Fig. 1 (planche I) représente la partie terminale du mandrin et la coupe verticale axiale de la tête selon l'invention ;
  • la Fig. 2 représente la vue schématique en coupe du mécanisme de la tête tangentielle selon l'invention ;
  • la Fig. 3 représente le même mécanisme, déplacé angulairement ;
  • la Fig. 4 représente par une vue avant le bras porte-abrasif en position déplacée angulairement ;
  • la Fig. 5 (planche II) représente schématiquement un groupe de six bras d'une tête tangentielle, tous avec leur axe orienté verticalement ;
  • la Fig. 6 représente le même groupe de bras déplacés en mouvement séquentiel ;
  • la Fig. 7 représente le même groupe de bras par paires, la première droite, la deuxième déplacée partiellement et la troisième totalement par rapport à la position de repos.
    • The characteristics of the invention will be better described with the aid of the attached drawing plates in which:
  • Fig. 1 (plate I) represents the end part of the mandrel and the axial vertical section of the head according to the invention;
  • Fig. 2 shows the schematic sectional view of the mechanism of the tangential head according to the invention;
  • Fig. 3 shows the same mechanism, moved angularly;
  • Fig. 4 shows a front view of the abrasive support arm in the angularly displaced position;
  • Fig. 5 (plate II) schematically represents a group of six arms of a tangential head, all with their axis oriented vertically;
  • Fig. 6 shows the same group of arms moved in sequential motion;
  • Fig. 7 shows the same group of arms in pairs, the first straight, the second displaced partially and the third totally relative to the rest position.

    • Comme on peut le voir sur la Fig. 1, on remarquera que la carcasse 1 du mandrin porte l'arbre rotatif 2 de ce dernier.As can be seen in Fig. 1, it will be noted that the carcass 1 of the mandrel carries the rotary shaft 2 of the latter.

    Le tourillon 3, solidaire de la carcasse 1, maintient la partie fixe de la tête, tandis que l'arbre 4 est relié à la partie rotative de celle-ci.The pin 3, integral with the carcass 1, maintains the fixed part of the head, while the shaft 4 is connected to the rotary part thereof.

    Un couple d'engrenages, respectivement à denture extérieure 5 et à denture intérieure 6, forment un mécanisme de type épicycloïdal.A pair of gears, with external teeth 5 and internal teeth respectively 6, form a mechanism of the epicyclic type.

    L'engrenage à denture extérieure 5 tourne fou sur l'axe 9 de l'excentrique 7, solidaire de la partie fixe de la tête, et il est relié à son tour à l'engrenage à denture intérieure 6, solidaire de la partie de la tête qui tourne autour de son propre axe vertical 10.The external gear 5 turns idly on the axis 9 of the eccentric 7, integral of the fixed part of the head, and it is in turn connected to the internal gear 6, secured to the part of the head which rotates around its own vertical axis 10.

    Au nombre de tours de la tête, qui correspond au nombre de tours de l'engrenage à denture intérieure 6, correspond un plus grand nombre de tours de l'engrenage à denture extérieure 5.The number of turns of the head, which corresponds to the number of turns of the gear to internal gear 6, corresponds to a greater number of revolutions of the gear exterior 5.

    Par l'intermédiaire d'un doigt 8, l'engrenage 5 qui tourne en position excentrique 9 par rapport à l'axe 10 de la tête entraíne l'engrenage 11, aligné sur l'axe 10 de la tête.By means of a finger 8, the gear 5 which rotates in the eccentric position 9 by relative to the axis 10 of the head drives the gear 11, aligned with the axis 10 of the head.

    Sur les Fig. 2 et 3, on peut voir le mécanisme d'oscillation pendulaire de l'arbre porte-bras 16.In Figs. 2 and 3, we can see the pendulum oscillation mechanism of the arm support shaft 16.

    Avec l'engrenage 11 (Fig. 1) qui fait office d'engrenage central, il y a une série d'engrenages satellites 12 qui présentent un trou excentrique, voir axes 19 et 20 (Fig. 3). Sur le trou excentrique, est inséré un cylindre 13 à trou transversal et à axe vertical dans lequel est logé un deuxième cylindre 14 de plus petit diamètre, possédant une cavité à axe horizontal pour entraíner le tourillon 15 à axe vertical en formant de cette façon un joint à croisillon.With the gear 11 (Fig. 1) which acts as the central gear, there is a series satellite gears 12 which have an eccentric hole, see axes 19 and 20 (Fig. 3). Sure the eccentric hole is inserted a cylinder 13 with transverse hole and vertical axis in which is housed a second cylinder 14 of smaller diameter, having a cavity with a horizontal axis to drive the pin 15 with a vertical axis thereby forming a cross joint.

    Ce mécanisme permet deux degrés de liberté au mouvement pour déplacer le tourillon 15 en mouvement alternatif d'un côté à l'autre. This mechanism allows two degrees of freedom of movement to move the pin 15 reciprocating from side to side.

    De cette façon, avec un mouvement rotatif de l'engrenage 12, on obtient un mouvement pendulaire alternatif du tourillon 15.In this way, with a rotary movement of the gear 12, we obtain a reciprocating pendulum movement of the pin 15.

    Comme ceci est plus visible sur la Fig. 4, on remarquera le mouvement pendulaire de l'abrasif 18, solidaire du tourillon 15 à axe vertical, qui est mieux visible sur la Fig. 1 ; un arbre 16 à axe horizontal, mieux visible sur la Fig. 4, transmet le mouvement alternatif au bras porte-abrasif 17 qui, pendant qu'il tourne solidairement avec la partie rotative de la tête, se déplace en mouvement alternatif tout d'abord sur un côté puis sur le côté opposé.As is more visible in FIG. 4, note the pendulum movement of the abrasive 18, integral with the pin 15 with a vertical axis, which is better visible in FIG. 1; a tree 16 with a horizontal axis, better visible in FIG. 4, transmits the reciprocating motion to the arm abrasive holder 17 which, while it rotates integrally with the rotary part of the head, becomes moves in reciprocating motion first on one side and then on the opposite side.

    Grâce à ce mouvement, l'abrasif 18 prend la forme d'un secteur circulaire, de sorte que l'abrasif 18 est toujours en contact avec la matière, selon une ligne tangentielle.Thanks to this movement, the abrasive 18 takes the form of a circular sector, so that the abrasive 18 is always in contact with the material, along a tangential line.

    Chaque bras individuel 17 est mis en mouvement par un engrenage satellite 12 (Fig. 2 et 3), de sorte qu'il est possible d'obtenir le mouvement des bras dans un mode simultané, séquentiel ou alterné, selon la position d'engrènement des engrenages satellites 12 par rapport à l'engrenage central 11. Sur les Fig. 5, 6 et 7, on peut voir de façon schématique la position que les bras prennent avec le mouvement de travail.Each individual arm 17 is set in motion by a satellite gear 12 (Fig. 2 and 3), so that it is possible to obtain the movement of the arms in a simultaneous mode, sequential or alternating, depending on the meshing position of the satellite gears 12 with respect to to the central gear 11. In Figs. 5, 6 and 7, we can see schematically the position that the arms take with the work movement.

    En particulier, sur la Fig. 5, les bras de 21 à 26 se trouvent tous dans la même position, en se déplaçant simultanément, tout d'abord dans un sens, puis dans le sens opposé.In particular, in FIG. 5, the arms from 21 to 26 are all in the same position, moving simultaneously, first in one direction, then in the opposite direction.

    Sur la Fig. 6, les bras de 21 à 26 sont animés d'un mouvement séquentiel qu'on obtient, par exemple, lorsque le bras suivant est positionné par rapport au bras précédent de telle manière qu'il se forme un cycle complet entre le premier bras et le dernier.In Fig. 6, the arms from 21 to 26 are animated in a sequential movement which gets, for example, when the next arm is positioned relative to the previous arm of such that a complete cycle is formed between the first arm and the last.

    Sur la Fig. 7, on a représenté des paires dans des positions symétriques, par exemple, la paire de bras 21 et 22 est en position radiale tandis que la deuxième paire 23 et 24 présente des déplacements angulaires intermédiaires et que les bras 25 et 26 sont représentés avec des déplacements angulaires dans la position extrême.In Fig. 7, pairs have been shown in symmetrical positions, for example, the pair of arms 21 and 22 is in the radial position while the second pair 23 and 24 has intermediate angular displacements and that the arms 25 and 26 are represented with angular displacements in the extreme position.

    Le tout est indiqué à simple titre d'exemple non limitatif. Everything is indicated by way of non-limiting example.

    On prévoit par ailleurs que, dans d'autres formes de réalisation de la machine, les bras puissent être en un nombre différent de six, par exemple au nombre de quatre ou de huit, sans pour cela sortir du domaine de l'invention.It is further provided that, in other embodiments of the machine, the arms may be in a number other than six, for example four or eight, without for this to leave the field of the invention.

    Il est par ailleurs visible que les détails de construction des différents éléments de la tête ont été décrits et représentés sur les planches de dessins annexées dans une forme de construction de détail qui n'est pas obligatoire, et qu'ils peuvent prendre des formes et des aspects différents, tout en conservant les caractéristiques de construction qui sont essentielles pour l'invention sans pour cela sortir du domaine du brevet.It is also visible that the construction details of the various elements of the head have been described and shown on the accompanying drawing boards in a form of retail construction that is not mandatory, and that they can take forms and different aspects, while retaining the essential construction features for the invention without thereby leaving the field of the patent.

    Claims (3)

    Tête tangentielle pour le polissage et le lustrage du granit et du grès émaillé, comprenant au moins un bras porte-abrasif (17) pourvu d'un abrasif (18), ladite tête étant propre à se déplacer selon un mouvement de rotation, alors que le bras est propre à se déplacer selon un mouvement alternatif pour pouvoir entrer en contact avec la matière à travailler le long d'une ligne de contact tangentielle, caractérisée en ce que la tête comprend un engrenage central (11) entraínant au moins un engrenage satellite (12) percé d'un trou excentrique, dans lequel sont placés des moyens (13, 14) de réception d'un tourillon (15) propre à se mouvoir par rapport auxdits moyens de réception (13, 14), de manière à transformer le mouvement de rotation de l'engrenage (12) en un mouvement alternatif du bras (17).Tangential head for polishing and buffing granite and glazed stoneware, comprising at least one abrasive support arm (17) provided with an abrasive (18), said head being able to move in a rotational movement, while the arm is able to move move in an alternating motion to be able to come into contact with the material to be work along a tangential contact line, characterized in that the head comprises a central gear (11) driving at least one satellite gear (12) pierced with a hole eccentric, in which are placed means (13, 14) for receiving a pin (15) able to move relative to said receiving means (13, 14), so as to transform the rotational movement of the gear (12) into an alternating movement of the arm (17). Tête tangentielle selon la revendication 1, caractérisée en ce qu'elle comprend plusieurs engrenages satellites (12) à trou excentrique, pour transformer le mouvement de rotation de chaque engrenage satellite (12) en un mouvement alternatif du bras (17).Tangential head according to claim 1, characterized in that it comprises several satellite gears (12) with eccentric hole, to transform the movement of rotation of each satellite gear (12) in an alternating movement of the arm (17). Tête tangentielle selon les revendications 1 et 2, caractérisée en ce que les moyens de réception du tourillon (15) comprennent un grand (13) et un petit (14) cylindres à axes orthogonaux, ledit petit cylindre étant pourvu d'une cavité d'entraínement du tourillon, ces cylindres étant propres à donner plusieurs degrés de liberté au mouvement du tourillon (15), en ce sens que le grand cylindre (13) ne tourne ni n'entraíne le tourillon (15), tandis que le cylindre de plus petit diamètre (14), logé dans le corps du grand cylindre (13), tourne en s'adaptant à la position du tourillon (15), en permettant ainsi au tourillon (15) de tourner dans ladite cavité d'entraínement.Tangential head according to claims 1 and 2, characterized in that the means receiving pin (15) include a large (13) and a small (14) axis cylinder orthogonal, said small cylinder being provided with a journal drive cavity, these cylinders being capable of giving several degrees of freedom to the movement of the journal (15), in that the large cylinder (13) does not rotate or drive the pin (15), while the smaller diameter cylinder (14), housed in the body of the large cylinder (13), rotates adapting to the position of the pin (15), thereby allowing the pin (15) to rotate in said drive cavity.
    EP98121669A 1997-12-04 1998-11-13 Tangential polishing head for lapping granit and glazed stone Withdrawn EP0920957A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    IT97VI000214A IT1297515B1 (en) 1997-12-04 1997-12-04 TANGENTIAL HEAD FOR SANDING AND POLISHING GRANITE AND PORCELAIN STONEWARE
    ITVI970214 1997-12-04

    Publications (1)

    Publication Number Publication Date
    EP0920957A1 true EP0920957A1 (en) 1999-06-09

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    Application Number Title Priority Date Filing Date
    EP98121669A Withdrawn EP0920957A1 (en) 1997-12-04 1998-11-13 Tangential polishing head for lapping granit and glazed stone

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    IT (1) IT1297515B1 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ITTV20110026A1 (en) * 2011-02-24 2012-08-25 Luca Toncelli MACHINE AND SPINDLE FOR SANDING OR POLISHING OF STONE OR LITOID MATERIAL SHEETS.
    RU2532598C2 (en) * 2011-10-13 2014-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Псковский государственный университет" Flat surfaces abrasive machining device with variable cutting speed using articulation linkage

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4965965A (en) * 1988-07-06 1990-10-30 Wallin Sven E Grinding head for surfacing and polishing stone, marbles and other hard materials
    EP0437831A1 (en) * 1990-01-18 1991-07-24 Brema Srl Lapping head with floating grinders for rocky materials, particularly for granite slabs
    EP0657248A1 (en) * 1993-12-07 1995-06-14 Brema Srl Improved lapping head for rocky materials, particularly for granite slabs

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4965965A (en) * 1988-07-06 1990-10-30 Wallin Sven E Grinding head for surfacing and polishing stone, marbles and other hard materials
    EP0437831A1 (en) * 1990-01-18 1991-07-24 Brema Srl Lapping head with floating grinders for rocky materials, particularly for granite slabs
    EP0657248A1 (en) * 1993-12-07 1995-06-14 Brema Srl Improved lapping head for rocky materials, particularly for granite slabs

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ITTV20110026A1 (en) * 2011-02-24 2012-08-25 Luca Toncelli MACHINE AND SPINDLE FOR SANDING OR POLISHING OF STONE OR LITOID MATERIAL SHEETS.
    CN102649252A (en) * 2011-02-24 2012-08-29 卢卡·通切利 Machine for flattening or polishing slab made of stone or stone-shaped material and mandrel
    CN102649252B (en) * 2011-02-24 2017-04-12 卢卡·通切利 Machine for flattening or polishing slab made of stone or stone-shaped material and mandrel
    RU2532598C2 (en) * 2011-10-13 2014-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Псковский государственный университет" Flat surfaces abrasive machining device with variable cutting speed using articulation linkage

    Also Published As

    Publication number Publication date
    ITVI970214A0 (en) 1997-12-04
    IT1297515B1 (en) 1999-12-17
    ITVI970214A1 (en) 1999-06-04

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