EP2765883A1 - Clasp for a watch strap or belt - Google Patents

Clasp for a watch strap or belt

Info

Publication number
EP2765883A1
EP2765883A1 EP12759717.7A EP12759717A EP2765883A1 EP 2765883 A1 EP2765883 A1 EP 2765883A1 EP 12759717 A EP12759717 A EP 12759717A EP 2765883 A1 EP2765883 A1 EP 2765883A1
Authority
EP
European Patent Office
Prior art keywords
clasp
cover
belt
toothed element
link
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
EP12759717.7A
Other languages
German (de)
French (fr)
Other versions
EP2765883B1 (en
Inventor
Cédric Kaltenrieder
Rocco Catanese
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.)
Omega SA
Original Assignee
Omega 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 Omega SA filed Critical Omega SA
Priority to EP12759717.7A priority Critical patent/EP2765883B1/en
Publication of EP2765883A1 publication Critical patent/EP2765883A1/en
Application granted granted Critical
Publication of EP2765883B1 publication Critical patent/EP2765883B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B17/00—Press-button or snap fasteners
    • A44B17/0011—Press-button fasteners in which the elastic retaining action is obtained by a spring working in the plane of the fastener
    • A44B17/0017—Their fastening
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41F—GARMENT FASTENINGS; SUSPENDERS
    • A41F9/00—Belts, girdles, or waistbands for trousers or skirts
    • A41F9/02—Expansible or adjustable belts or girdles ; Adjustable fasteners comprising a track and a slide member
    • A41F9/025—Adjustable belts or girdles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/21—Strap tighteners
    • Y10T24/2143—Strap-attached folding lever
    • Y10T24/2155—Jewelry-watch straps

Definitions

  • the present invention relates to a clasp for a watch strap or belt. More specifically, the present invention relates to a clasp for a watch strap or belt comprising means that allow a fine adjustment of the length of the bracelet or the belt.
  • Clasps comprising means for a fine adjustment of the length of the wristband of a watch are already known from the state of the art.
  • Clasp for fine adjustment of the length of a bracelet means clasps that allow to adjust the length of a short strap to allow to fit the fairest length for optimal comfort when wearing the bracelet. shows.
  • Such clasps usually include a terminal link through which one of the strands of the bracelet is connected to the lid of the clasp. This terminal link is slidable in a longitudinal direction of the clasp between a first retracted position in which it is housed in the lid of the clasp and a second extended position in which it is disengaged from the clasp. Therefore, the length available for the fine adjustment is determined by the travel of the end link between its first and second positions.
  • the end link cooperates via a toothed element with a toothed rack.
  • the rack can be secured to the lid of the clasp and the toothed element be carried by the terminal link.
  • the permutation of the rack teeth and the toothed element is also possible.
  • the end link When the toothed element is engaged with the rack teeth, the end link is immobilized. To disengage the toothed element from its engagement with the rack teeth, resilient means of uncoupling are provided. These elastic means usually offer a low uncoupling race. Due to the short stroke of the elastic disengagement means, the teeth of the rack teeth can not be very high. Consequently, the force of the notching between the toothed element and the rack tooth is relatively small, so that the position of the end link can be easily deindexed, for example by pulling or pushing the end link, which is not not acceptable. In addition, it is easily understood that, the teeth of the rack teeth are small, the higher the manufacturing tolerances, which increases the cost of such a clasp.
  • the present invention aims to overcome the drawbacks mentioned above as well as others by providing a clasp for the fine adjustment of the length of a watch strap or a belt allowing in particular to keep the setting the length of the bracelet or belt without the risk of losing it inadvertently.
  • the present invention relates to a clasp for a watch strap or belt comprising a cover connected from one side to a first strand of bracelet or belt and from a second side to a second strand of bracelet or belt, connecting means being interposed between the second strap or belt strand and the cover of the clasp, these connecting means comprising a terminal link sliding in a longitudinal direction of the clasp between a first position in which the terminal link is at least partially engaged in the lid of the clasp, and a second position in which the end link is disengaged from the lid of the clasp, the end element comprising a push-button by pressure on which it is possible to pass a toothed element of a first position in the toothed element is engaged with a toothed rack integral with the lid of the clasp, at a second position wherein the toothed element is released from its engagement with the rack teeth, the clasp being characterized in that the terminal link comprises a housing in which is disposed at least one spring, the spring being capped by the push button.
  • the present invention provides a watchband clasp or belt in which the disengagement between the toothed element and the rack teeth is controlled by at least one spring.
  • a spring provides the push button a substantial stroke, this stroke being determined only by the length of the spring.
  • the push button directly controls the passage of the toothed element from its first position in which it is engaged with the rack teeth to its second position in which it is released from its engagement with the rack teeth, the race of the toothed element between its two extreme positions is also larger.
  • the teeth of the rack teeth can be made higher than was the case in the state of the art and therefore the spaces between the deeper teeth.
  • the force of the notching between the toothed element and the rack tooth is therefore higher, so that the position of the end link can not be deindexed, except to destroy the clasp.
  • the manufacturing tolerances are less stringent, which allows for gains in terms of cost.
  • the pushbutton is equipped with a stop means preventing extraction of the end link from the clasp cover.
  • the connecting means between the clasp cover and the second strap or belt strand are captive, except to destroy the clasp.
  • the stop means is removable, which makes it possible, if necessary, to replace the end link or the push-button during a return of the wristwatch or the belt. in after-sales service.
  • FIG. 1 is a perspective view and in the dissociated state of the clasp according to the invention.
  • FIG. 2 is a perspective view of the clasp of Figure 1 in the assembled state, the end adjusting end link being in the retracted position;
  • FIG. 3 is a view similar to that of Figure 2, the fine adjustment link being in the extended position;
  • FIG. 4 is a cross-sectional view of the end link fine adjustment according to the invention.
  • FIG. 5 is a view similar to that of FIG. 4 in which the coil springs have been replaced by a leaf spring
  • FIG. 6 is a partial perspective view of a belt equipped with the clasp according to the invention.
  • the present invention proceeds from the general inventive idea of using a spring as an elastic means controlling the uncoupling between a toothed element and a rack tooth of a fine adjustment link of a clasp for a watch strap or belt.
  • a spring provides a greater stroke to the pushbutton associated therewith, so that the displacement of the toothed element controlled by the push button from its first position in which it is engaged with the rack teeth at its second position in which it is released from engagement with the rack teeth is also more important.
  • the teeth of the rack teeth can therefore be provided higher with deeper teeth recesses, which ensures a better notch of the toothed element and reduces the manufacturing tolerances of the teeth of the rack teeth.
  • the present invention will be described in connection with a watch strap. It goes without saying, however, that this example is given for purely illustrative and non-limiting purposes only and that the clasp according to the invention can also be used for a belt.
  • FIG 1 is a perspective view in the dissociated state of the clasp according to the invention while Figure 2 is a perspective view of the same clasp in the assembled state.
  • the clasp according to the invention comprises a lid 2 connected on one side to a first strand of bracelet 4, of which only one link is visible in the drawing with the interposition of a closure system. with folding clasp 6 whose structure is known per se and therefore will not be described further here.
  • the clasp closure system 6 can be omitted and the cover 2 can be connected to the first strand of bracelet 4 directly.
  • the lid 2 is connected on the second side to a second strand of bracelet 8, three links of which are visible in the drawing with the interposition of a terminal link 10 for fine adjustment of the length of the wristband of the watch.
  • the cover 2 has a U-shaped general section and is provided with two flanges 12 facing each other, these flanges 12 each bearing on their inwardly facing face a
  • a groove 1 6 is formed in the bottom of the cover 2 and defines two end stops18 whose role will be described in detail later.
  • the end link 10 comprises lateral guide surfaces 19 so as to be slidably guided in the cover 2 between the bottom of the cover 2 and the wings 12. It will be appreciated by comparative examination of FIGS.
  • the end link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position ( Figure 2) in which the end link 10 is engaged in the cover 2 of the clasp 1, and a second position ( Figure 3) in which the end link 1 0 is released from the lid 2 of the clasp 1.
  • the length available for adjustment the bracelet is determined by the race of the terminal link 1 0 between its first and second positions.
  • the end link 10 comprises two end knuckles 20 between which the middle knuckle 22 of the adjoining link of the second strand of bracelet 8 is interlocked.
  • the assembly between the links is ensured by a bar 24 freely traversing the knuckles 20 and 22 and which is held by two end screws 26.
  • the terminal link 10 comprises at least one and, preferably, two cylindrical blind housings 28 in each of which is disposed a helical spring 30, these springs 30 being capped by a push-button 32.
  • This push-button 32 is substantially in the form of a rectilinear actuating bar which extends transversely to the longitudinal axis of symmetry of the clasp 1 and which has at each of its ends a toothed element 34 for example in the form of a half-cylinder. These toothed elements 34 are intended to come into engagement with the toothing of the racks 14. It will be understood that when the terminal link 1 0 and its pushbutton 32 are slid between the two wings 1 2 inside the cover 2 of the clasp 1 As illustrated in FIG.
  • the coil springs 30 which are compressed force the push-button 32 towards the racks 14, so that the toothed elements 34 engage with the teeth of the racks 14. Conversely, when pressed on the pushbutton 32 along the arrow A against the elastic restoring force of the springs 30, the toothed elements 34 are released from their engagement with the toothed racks 14. It will also be understood that the coil springs 30 give the button pusher 32 and therefore to the toothed elements 34 a large stroke, so that the teeth of the toothed racks 14 can be high and the spaces between these deep teeth. As a result, the toothed elements 34 are perfectly notched in the teeth of the racks 14, so that it is impossible to accidentally lose the setting of the terminal link 1 0. In addition, the requirements on the tolerances rack toothings 14 are lower, which allows for gains in terms of production costs.
  • FIGS. 1 and 4 also show that between the two blind cylindrical housings 28 formed in the end link 1 0 there is provided a first threaded through hole 36 into which is screwed a screw 38 whose tip projects into the groove 1 6 formed in the bottom of the lid 2.
  • a first threaded through hole 36 into which is screwed a screw 38 whose tip projects into the groove 1 6 formed in the bottom of the lid 2.
  • this groove 16 is bounded at each of its ends by a stop 18 which marks the bottom of the groove 16
  • the end link 10 of fine adjustment is completely captive once the screw 38 screwed.
  • a second through hole 40 aligned with the first threaded through hole 36 is machined in the pushbutton 32.
  • a plug (not shown) is driven or glued into the second through hole 40 to hide the screw 38 and not to reveal a hole in front of the user.
  • the pushbutton 32 is permanently unmountable.
  • a screw 42 is screwed into the second through hole 40. This screw 42 masks the screw 38 with respect to the user. However, the assembly remains removable to the extent that it is sufficient to remove the screw 42 to then be able to remove the screw 38.
  • These two variants are preferred to the variant in which only one screw is provided that is long enough for the head of this screw is flush with the surface of the pushbutton 32. Indeed, in this embodiment, the head of the screw protrudes from the pushbutton 32 when it is pressed against the elastic return force of the 30 springs, which is not aesthetic.
  • this leaf spring 48 has a V-shaped profile. is fixed at its center by means of a screw 50 in the bottom 52 of the terminal link 1 0 and the push-button 32 is in elastic support on the two arms 54 of the leaf spring 48.
  • the degree of deflection of these arms 54 determines the stroke of the push-button 32 and thus of the toothed elements 34. The greater this degree of deflection, the greater the stroke of the push-button and the more the teeth of the rack teeth 14 can be high and the spaces between these deep teeth.
  • the toothed elements 34 are perfectly notched in the teeth of the racks 14, so that it is impossible to accidentally lose the setting of the end link 10.
  • the requirements on the tolerances of the toothed racks 14 are smaller, which allows to realize gains in terms of production costs.
  • the tip of the screw 50 protrudes into the groove 16 formed in the bottom of the cover 4, so that the end link 10 of fine adjustment is completely captive once the screw 50 screwed.
  • a screw 58 screwed into the push button 32 is aligned with the screw 50 to hide the screw 50 and not to reveal a hole in front of the user.
  • the clasp according to the invention can also be used for a clothing belt.
  • a first end 60 of the belt 62 is connected directly to the lid 2 of the clasp, while the second end 64 of the belt 62 is connected to the lid 2 of the clasp with the interposition of the connecting means according to the invention which comprise the terminal link 10.

Landscapes

  • Buckles (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

Clasp for a watch strap comprising a cover (2) connected at a first end to a first length of strap (4) and at a second end to a second length of strap (8), connecting means being interposed between the second length of strap (8) and the cover (2) of the clasp (1), these connecting means comprising a terminal link (10) sliding in a longitudinal direction of the clasp (1) between a first position in which the terminal link (10) is at least partially engaged in the cover (2) of the clasp (1), and a second position in which the terminal link (10) is free of the cover (2) of the clasp (1), the terminal link (10) comprising a push-button (32), the pressing of which makes it possible to cause a toothed element (34) to move from a first position in which the toothed element (34) is in gnash with rack teeth (14) secured to the cover (2) of the clasp (1), into a second position in which the toothed element (34) is released of its engagement with the rack teeth (14), the clasp being characterized in that the terminal link (10) has a housing (28) in which there is at least one spring (30), this spring (30) being capped by the push-button (32).

Description

FERMOIR POUR BRACELET DE MONTRE OU CEINTURE  CLASP FOR WATCH BRACELET OR BELT
La présente invention concerne un fermoir pour bracelet de montre ou ceinture. Plus précisément, la présente invention concerne un fermoir pour bracelet de montre ou ceinture comprenant des moyens qui permettent un réglage fin de la longueur du bracelet ou de la ceinture. The present invention relates to a clasp for a watch strap or belt. More specifically, the present invention relates to a clasp for a watch strap or belt comprising means that allow a fine adjustment of the length of the bracelet or the belt.
Des fermoirs comprenant des moyens pour un réglage fin de la longueur du bracelet d'une montre sont déjà connus de l'état de la technique. Par fermoir pour réglage fin de la longueur d'un bracelet, on entend des fermoirs qui permettent de régler sur une faible course la longueur d'un bracelet afin de permettre d'adapter au plus juste cette longueur pour un confort optimal au porter de la montre. De tels fermoirs comprennent usuellement un maillon terminal par l'intermédiaire duquel l'un des brins du bracelet est relié au couvercle du fermoir. Ce maillon terminal est apte à coulisser selon une direction longitudinale du fermoir entre une première position rétractée dans laquelle il vient se loger dans le couvercle du fermoir et une seconde position sortie dans laquelle il est dégagé du fermoir. Par conséquent, la longueur disponible pour le réglage fin est déterminée par la course du maillon terminal entre ses première et seconde positions. Pour l'indexation de la position du maillon terminal, le maillon terminal coopère via un élément denté avec une denture de crémaillère. A titre d'exemple, la crémaillère peut être solidaire du couvercle du fermoir et l'élément denté être porté par le maillon terminal. La permutation de la denture de crémaillère et de l'élément denté est également envisageable.  Clasps comprising means for a fine adjustment of the length of the wristband of a watch are already known from the state of the art. Clasp for fine adjustment of the length of a bracelet, means clasps that allow to adjust the length of a short strap to allow to fit the fairest length for optimal comfort when wearing the bracelet. shows. Such clasps usually include a terminal link through which one of the strands of the bracelet is connected to the lid of the clasp. This terminal link is slidable in a longitudinal direction of the clasp between a first retracted position in which it is housed in the lid of the clasp and a second extended position in which it is disengaged from the clasp. Therefore, the length available for the fine adjustment is determined by the travel of the end link between its first and second positions. For indexing the position of the end link, the end link cooperates via a toothed element with a toothed rack. For example, the rack can be secured to the lid of the clasp and the toothed element be carried by the terminal link. The permutation of the rack teeth and the toothed element is also possible.
Lorsque l'élément denté est en prise avec la denture de crémaillère, le maillon terminal est immobilisé. Pour désengager l'élément denté de sa prise avec la denture de crémaillère, on prévoit des moyens élastiques de désaccouplement. Ces moyens élastiques offrent habituellement une faible course de désaccouplement. Du fait de la faible course des moyens élastiques de désaccouplement, les dents de la denture de crémaillère ne peuvent pas être très hautes. Par conséquent, la force du crantage entre l'élément denté et la denture à crémaillère est relativement faible, de sorte que la position du maillon terminal peut être facilement désindexée, par exemple en tirant ou en poussant le maillon terminal, ce qui n'est pas acceptable. En outre, on comprend aisément que, plus les dents de la denture de crémaillère sont petites, plus les tolérances de fabrication sont élevées, ce qui renchérit le prix de revient d'un tel fermoir. When the toothed element is engaged with the rack teeth, the end link is immobilized. To disengage the toothed element from its engagement with the rack teeth, resilient means of uncoupling are provided. These elastic means usually offer a low uncoupling race. Due to the short stroke of the elastic disengagement means, the teeth of the rack teeth can not be very high. Consequently, the force of the notching between the toothed element and the rack tooth is relatively small, so that the position of the end link can be easily deindexed, for example by pulling or pushing the end link, which is not not acceptable. In addition, it is easily understood that, the teeth of the rack teeth are small, the higher the manufacturing tolerances, which increases the cost of such a clasp.
La présente invention a pour but de remédier aux inconvénients mentionnés ci-dessus ainsi qu'à d'autres encore en procurant un fermoir pour le réglage fin de la longueur d'un bracelet de montre ou d'une ceinture permettant notamment de conserver le réglage de la longueur du bracelet ou de la ceinture sans risque de le perdre par inadvertance.  The present invention aims to overcome the drawbacks mentioned above as well as others by providing a clasp for the fine adjustment of the length of a watch strap or a belt allowing in particular to keep the setting the length of the bracelet or belt without the risk of losing it inadvertently.
A cet effet, la présente invention concerne un fermoir pour bracelet de montre ou ceinture comprenant un couvercle relié d'un premier côté à un premier brin de bracelet ou de ceinture et d'un second côté à un second brin de bracelet ou de ceinture, des moyens de liaison étant interposés entre le second brin de bracelet ou de ceinture et le couvercle du fermoir, ces moyens de liaison comprenant un maillon terminal coulissant suivant une direction longitudinale du fermoir entre une première position dans laquelle le maillon terminal est au moins partiellement engagé dans le couvercle du fermoir, et une seconde position dans laquelle le maillon terminal est dégagé du couvercle du fermoir, l'élément terminal comprenant un bouton-poussoir par pression sur lequel il est possible de faire passer un élément denté d'une première position dans laquelle l'élément denté est en prise avec une denture de crémaillère solidaire du couvercle du fermoir, à une seconde position dans laquelle l'élément denté est libéré de son engagement avec la denture de crémaillère, le fermoir étant caractérisé en ce que le maillon terminal comprend un logement dans lequel est disposé au moins un ressort, ce ressort étant coiffé par le bouton-poussoir. Grâce à ces caractéristiques, la présente invention procure un fermoir pour bracelet de montre ou ceinture dans lequel le désengagement entre l'élément denté et la denture de crémaillère est commandé par au moins un ressort. Un tel ressort procure au bouton-poussoir une course substantielle, cette course étant seulement déterminée par la longueur du ressort. Comme le bouton-poussoir commande directement le passage de l'élément denté de sa première position dans laquelle il est en prise avec la denture de crémaillère à sa seconde position dans laquelle il est libéré de son engagement avec la denture de crémaillère, la course de l'élément denté entre ses deux positions extrêmes est également plus importante. Par voie de conséquence, les dents de la denture de crémaillère peuvent être réalisées plus hautes que tel n'était le cas dans l'état de la technique et donc les espaces entres les dents plus profonds. La force du crantage entre l'élément denté et la denture à crémaillère est donc plus élevée, de sorte que la position du maillon terminal ne peut être désindexée, sauf à détruire le fermoir. En outre, comme les dents de la denture de crémaillère sont plus hautes, les tolérances de fabrication sont moins strictes, ce qui permet de réaliser des gains en termes de prix de revient. For this purpose, the present invention relates to a clasp for a watch strap or belt comprising a cover connected from one side to a first strand of bracelet or belt and from a second side to a second strand of bracelet or belt, connecting means being interposed between the second strap or belt strand and the cover of the clasp, these connecting means comprising a terminal link sliding in a longitudinal direction of the clasp between a first position in which the terminal link is at least partially engaged in the lid of the clasp, and a second position in which the end link is disengaged from the lid of the clasp, the end element comprising a push-button by pressure on which it is possible to pass a toothed element of a first position in the toothed element is engaged with a toothed rack integral with the lid of the clasp, at a second position wherein the toothed element is released from its engagement with the rack teeth, the clasp being characterized in that the terminal link comprises a housing in which is disposed at least one spring, the spring being capped by the push button. Thanks to these features, the present invention provides a watchband clasp or belt in which the disengagement between the toothed element and the rack teeth is controlled by at least one spring. Such a spring provides the push button a substantial stroke, this stroke being determined only by the length of the spring. As the push button directly controls the passage of the toothed element from its first position in which it is engaged with the rack teeth to its second position in which it is released from its engagement with the rack teeth, the race of the toothed element between its two extreme positions is also larger. As a result, the teeth of the rack teeth can be made higher than was the case in the state of the art and therefore the spaces between the deeper teeth. The force of the notching between the toothed element and the rack tooth is therefore higher, so that the position of the end link can not be deindexed, except to destroy the clasp. In addition, as the teeth of the rack teeth are higher, the manufacturing tolerances are less stringent, which allows for gains in terms of cost.
Selon une caractéristique complémentaire de l'invention, le bouton- poussoir est équipé d'un moyen d'arrêt empêchant l'extraction du maillon terminal du couvercle de fermoir.  According to a complementary feature of the invention, the pushbutton is equipped with a stop means preventing extraction of the end link from the clasp cover.
Grâce à cette autre caractéristique, les moyens de liaison entre le couvercle du fermoir et le second brin de bracelet ou de ceinture sont imperdables, sauf à détruire le fermoir. Additionnellement, selon une variante préférée de l'invention, le moyen d'arrêt est démontable, ce qui permet, si nécessaire, de remplacer le maillon terminal ou le bouton- poussoir lors d'un retour de la montre-bracelet ou de la ceinture en service après-vente.  With this other characteristic, the connecting means between the clasp cover and the second strap or belt strand are captive, except to destroy the clasp. Additionally, according to a preferred variant of the invention, the stop means is removable, which makes it possible, if necessary, to replace the end link or the push-button during a return of the wristwatch or the belt. in after-sales service.
D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation du fermoir pour bracelet de montre ou pour ceinture selon l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement en liaison avec le dessin annexé sur lequel: Other features and advantages of the present invention will become more apparent from the following detailed description of an embodiment of the wristband or belt clasp according to the present invention. the invention, this example being given for purely illustrative and nonlimiting purposes only in connection with the appended drawing in which:
- la figure 1 est une vue en perspective et à l'état dissocié du fermoir selon l'invention;  - Figure 1 is a perspective view and in the dissociated state of the clasp according to the invention;
- la figure 2 est une vue en perspective du fermoir de la figure 1 à l'état assemblé, le maillon terminal de réglage fin étant en position rentrée;  - Figure 2 is a perspective view of the clasp of Figure 1 in the assembled state, the end adjusting end link being in the retracted position;
- la figure 3 est une vue analogue à celle de la figure 2, le maillon de réglage fin étant en position sortie;  - Figure 3 is a view similar to that of Figure 2, the fine adjustment link being in the extended position;
- la figure 4 est une vue en coupe transversale du maillon terminal de réglage fin selon l'invention;  - Figure 4 is a cross-sectional view of the end link fine adjustment according to the invention;
- la figure 5 est une vue analogue à celle de la figure 4 dans laquelle les ressorts hélicoïdaux ont été remplacés par une lame-ressort, et  FIG. 5 is a view similar to that of FIG. 4 in which the coil springs have been replaced by a leaf spring, and
- la figure 6 est une vue partielle en perspective d'une ceinture équipée du fermoir selon l'invention.  - Figure 6 is a partial perspective view of a belt equipped with the clasp according to the invention.
La présente invention procède de l'idée générale inventive qui consiste à utiliser un ressort comme moyen élastique contrôlant le désaccouplement entre un élément denté et une denture de crémaillère d'un maillon de réglage fin d'un fermoir pour bracelet de montre ou pour ceinture. Un tel ressort procure une course plus importante au bouton- poussoir qui lui est associé, de sorte que le déplacement de l'élément denté commandé par le bouton-poussoir de sa première position dans laquelle il est en prise avec la denture de crémaillère à sa seconde position dans laquelle il est libéré de son engagement avec la denture de crémaillère est également plus important. Les dents de la denture de crémaillère peuvent donc être prévues plus hautes avec des creux entre les dents plus profonds, ce qui assure un meilleur crantage de l'élément denté et permet de réduire les tolérances de fabrication des dents de la denture de crémaillère. La présente invention va être décrite en liaison avec un bracelet de montre. Il va cependant de soi que cet exemple est donné à titre purement illustratif et non limitatif seulement et que le fermoir selon l'invention peut également être utilisé pour une ceinture. The present invention proceeds from the general inventive idea of using a spring as an elastic means controlling the uncoupling between a toothed element and a rack tooth of a fine adjustment link of a clasp for a watch strap or belt. Such a spring provides a greater stroke to the pushbutton associated therewith, so that the displacement of the toothed element controlled by the push button from its first position in which it is engaged with the rack teeth at its second position in which it is released from engagement with the rack teeth is also more important. The teeth of the rack teeth can therefore be provided higher with deeper teeth recesses, which ensures a better notch of the toothed element and reduces the manufacturing tolerances of the teeth of the rack teeth. The present invention will be described in connection with a watch strap. It goes without saying, however, that this example is given for purely illustrative and non-limiting purposes only and that the clasp according to the invention can also be used for a belt.
La figure 1 est une vue en perspective à l'état dissocié du fermoir selon l'invention tandis que la figure 2 est une vue en perspective de ce même fermoir à l'état assemblé. Désigné dans son ensemble par la référence numérique générale 1 , le fermoir selon l'invention comprend un couvercle 2 relié d'un premier côté à un premier brin de bracelet 4 dont un seul maillon est visible au dessin avec interposition d'un système de fermeture à boucle déployante 6 dont la structure est connue en soi et qui ne sera donc pas décrit davantage ici. On notera que le système de fermeture à boucle déployante 6 peut être omis et que le couvercle 2 peut être relié au premier brin de bracelet 4 directement. Le couvercle 2 est relié d'un second côté à un second brin de bracelet 8 dont trois maillons sont visibles au dessin avec interposition d'un maillon terminal 10 de réglage fin de la longueur du bracelet de la montre.  Figure 1 is a perspective view in the dissociated state of the clasp according to the invention while Figure 2 is a perspective view of the same clasp in the assembled state. Designated as a whole by the general numerical reference 1, the clasp according to the invention comprises a lid 2 connected on one side to a first strand of bracelet 4, of which only one link is visible in the drawing with the interposition of a closure system. with folding clasp 6 whose structure is known per se and therefore will not be described further here. Note that the clasp closure system 6 can be omitted and the cover 2 can be connected to the first strand of bracelet 4 directly. The lid 2 is connected on the second side to a second strand of bracelet 8, three links of which are visible in the drawing with the interposition of a terminal link 10 for fine adjustment of the length of the wristband of the watch.
Comme on peut le voir à l'examen de la figure 1 , le couvercle 2 présente une section générale en forme de U et est muni de deux ailes 12 se faisant face, ces ailes 12 portant chacune sur leur face dirigée vers l'intérieur une denture de crémaillère 14. Par ailleurs, une rainure 1 6 est ménagée dans le fond du couvercle 2 et définit deux butées d'extrémité18 dont le rôle sera décrit en détail ultérieurement. Enfin, le maillon terminal 10 comprend des surfaces de guidage latérales 19 afin d'être guidé à coulissement dans le couvercle 2 entre le fond du couvercle 2 et les ailes 12. On appréciera par examen comparé des figures 2 et 3 que le maillon terminal 10 est capable de coulisser suivant une direction longitudinale du fermoir 1 entre une première position (figure 2) dans laquelle le maillon terminal 10 est engagé dans le couvercle 2 du fermoir 1 , et une seconde position (figure 3) dans laquelle le maillon terminal 1 0 est dégagé du couvercle 2 du fermoir 1 . La longueur disponible pour le réglage du bracelet est déterminée par la course du maillon terminal 1 0 entre ses première et seconde positions. As can be seen from the examination of FIG. 1, the cover 2 has a U-shaped general section and is provided with two flanges 12 facing each other, these flanges 12 each bearing on their inwardly facing face a In addition, a groove 1 6 is formed in the bottom of the cover 2 and defines two end stops18 whose role will be described in detail later. Finally, the end link 10 comprises lateral guide surfaces 19 so as to be slidably guided in the cover 2 between the bottom of the cover 2 and the wings 12. It will be appreciated by comparative examination of FIGS. 2 and 3 that the end link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position (Figure 2) in which the end link 10 is engaged in the cover 2 of the clasp 1, and a second position (Figure 3) in which the end link 1 0 is released from the lid 2 of the clasp 1. The length available for adjustment the bracelet is determined by the race of the terminal link 1 0 between its first and second positions.
Le maillon terminal 10 comprend deux charnons extrêmes 20 entre lesquels vient s'imbriquer le charnon médian 22 du maillon voisin du second brin de bracelet 8. L'assemblage entre les maillons est assuré par une barrette 24 traversant librement les charnons 20 et 22 et qui est maintenue par deux vis d'extrémité 26.  The end link 10 comprises two end knuckles 20 between which the middle knuckle 22 of the adjoining link of the second strand of bracelet 8 is interlocked. The assembly between the links is ensured by a bar 24 freely traversing the knuckles 20 and 22 and which is held by two end screws 26.
Le maillon terminal 10 comprend au moins un et, préférentiellement, deux logements borgnes cylindriques 28 dans chacun desquels est disposé un ressort hélicoïdal 30, ces ressorts 30 étant coiffés par un bouton- poussoir 32. Ce bouton-poussoir 32 se présente sensiblement sous la forme d'une barre d'actionnement rectiligne qui s'étend transversalement à l'axe de symétrie longitudinale du fermoir 1 et qui présente à chacune de ses extrémités un élément denté 34 par exemple sous la forme d'un demi- cylindre. Ces éléments dentés 34 sont destinés à venir en prise avec la denture des crémaillères 14. On comprendra que lorsque le maillon terminal 1 0 et son bouton-poussoir 32 sont glissés entre les deux ailes 1 2 à l'intérieur du couvercle 2 du fermoir 1 comme illustré à la figure 2, les ressorts hélicoïdaux 30 qui sont montés comprimés forcent le bouton- poussoir 32 en direction des crémaillères 14, de sorte que les éléments dentés 34 sont en prise avec les dentures des crémaillères 14. Inversement, lorsqu'on appuie sur le bouton-poussoir 32 suivant la flèche A à rencontre de la force de rappel élastique des ressorts 30, les éléments dentés 34 sont libérés de leur engagement avec les dentures de crémaillères 14. On comprendra également que les ressorts hélicoïdaux 30 confèrent au bouton-poussoir 32 et donc aux éléments dentés 34 une course importante, de sorte que les dents des dentures de crémaillères 14 peuvent être hautes et les espaces entre ces dents profonds. Par suite, les éléments dentés 34 sont parfaitement crantés dans les dentures des crémaillères 14, de sorte qu'il est impossible de perdre accidentellement le réglage du maillon terminal 1 0. En outre, les exigences sur les tolérances des dentures de crémaillères 14 sont moindres, ce qui permet de réaliser des gains en termes de coûts de production. The terminal link 10 comprises at least one and, preferably, two cylindrical blind housings 28 in each of which is disposed a helical spring 30, these springs 30 being capped by a push-button 32. This push-button 32 is substantially in the form of a rectilinear actuating bar which extends transversely to the longitudinal axis of symmetry of the clasp 1 and which has at each of its ends a toothed element 34 for example in the form of a half-cylinder. These toothed elements 34 are intended to come into engagement with the toothing of the racks 14. It will be understood that when the terminal link 1 0 and its pushbutton 32 are slid between the two wings 1 2 inside the cover 2 of the clasp 1 As illustrated in FIG. 2, the coil springs 30 which are compressed force the push-button 32 towards the racks 14, so that the toothed elements 34 engage with the teeth of the racks 14. Conversely, when pressed on the pushbutton 32 along the arrow A against the elastic restoring force of the springs 30, the toothed elements 34 are released from their engagement with the toothed racks 14. It will also be understood that the coil springs 30 give the button pusher 32 and therefore to the toothed elements 34 a large stroke, so that the teeth of the toothed racks 14 can be high and the spaces between these deep teeth. As a result, the toothed elements 34 are perfectly notched in the teeth of the racks 14, so that it is impossible to accidentally lose the setting of the terminal link 1 0. In addition, the requirements on the tolerances rack toothings 14 are lower, which allows for gains in terms of production costs.
On observe également à l'examen des figures 1 et 4 qu'entre les deux logements cylindriques borgnes 28 ménagés dans le maillon terminal 1 0 est prévu un premier trou traversant fileté 36 dans lequel est vissée une vis 38 dont la pointe fait saillie dans la rainure 1 6 ménagée dans le fond du couvercle 2. Comme cette rainure 16 est bornée à chacune de ses extrémités par une butée 18 qui marque le fond de la rainure 16, le maillon terminal 10 de réglage fin est totalement imperdable une fois la vis 38 vissée. Enfin, un second trou traversant 40 aligné avec le premier trou traversant fileté 36 est usiné dans le bouton-poussoir 32. Selon une première variante de réalisation de l'invention, un bouchon (non représenté) est chassé ou collé dans le second trou traversant 40 afin de masquer la vis 38 et ne pas laisser apparaître un trou au regard de l'utilisateur. Dans ce cas cependant, le bouton-poussoir 32 est définitivement indémontable. Selon une seconde variante de réalisation de l'invention, une vis 42 est vissée dans le second trou traversant 40. Cette vis 42 masque la vis 38 au regard de l'utilisateur. Cependant, l'ensemble reste démontable dans la mesure où il suffit de déposer la vis 42 pour pouvoir ensuite retirer la vis 38. Ces deux variantes de réalisation sont préférées à la variante dans laquelle ne serait prévue qu'une seule vis suffisamment longue pour que la tête de cette vis affleure la surface du bouton-poussoir 32. En effet, dans ce mode de réalisation, la tête de la vis ferait saillie du bouton-poussoir 32 lorsque celui-ci est pressé à rencontre de la force de rappel élastique des ressorts 30, ce qui n'est pas esthétique.  FIGS. 1 and 4 also show that between the two blind cylindrical housings 28 formed in the end link 1 0 there is provided a first threaded through hole 36 into which is screwed a screw 38 whose tip projects into the groove 1 6 formed in the bottom of the lid 2. As this groove 16 is bounded at each of its ends by a stop 18 which marks the bottom of the groove 16, the end link 10 of fine adjustment is completely captive once the screw 38 screwed. Finally, a second through hole 40 aligned with the first threaded through hole 36 is machined in the pushbutton 32. According to a first embodiment of the invention, a plug (not shown) is driven or glued into the second through hole 40 to hide the screw 38 and not to reveal a hole in front of the user. In this case, however, the pushbutton 32 is permanently unmountable. According to a second variant embodiment of the invention, a screw 42 is screwed into the second through hole 40. This screw 42 masks the screw 38 with respect to the user. However, the assembly remains removable to the extent that it is sufficient to remove the screw 42 to then be able to remove the screw 38. These two variants are preferred to the variant in which only one screw is provided that is long enough for the head of this screw is flush with the surface of the pushbutton 32. Indeed, in this embodiment, the head of the screw protrudes from the pushbutton 32 when it is pressed against the elastic return force of the 30 springs, which is not aesthetic.
On notera qu'en fond des logements borgnes cylindriques 28 sont prévus deux tenons 44 pour le centrage des ressorts 30. Par ailleurs, le bouton-poussoir 32 est muni sur sa surface en regard du maillon terminal 1 0 de réglage fin de deux logements cylindriques 46 coaxiaux avec les logements borgnes cylindriques 28 pour le guidage et le maintien des ressorts 30. II va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples pourront être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées. Note that at the bottom of the cylindrical blind housings 28 are provided two pins 44 for centering the springs 30. Furthermore, the push button 32 is provided on its surface opposite the end link 1 0 fine adjustment of two cylindrical housings 46 coaxial with cylindrical blind housings 28 for guiding and holding springs 30. It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants may be envisaged by those skilled in the art without departing from the scope of the invention as defined by the appended claims.
En particulier, comme illustré à la figure 5, il peut être envisagé de remplacer les deux ressorts hélicoïdaux 30 par une lame-ressort 48. Dans l'exemple représenté au dessin, cette lame-ressort 48 présente un profil en forme de V. Elle est fixée en son centre au moyen d'une vis 50 dans le fond 52 du maillon terminal 1 0 et le bouton-poussoir 32 est en appui élastique sur les deux bras 54 de la lame-ressort 48. Le degré de fléchissement de ces bras 54 détermine la course du bouton-poussoir 32 et donc des éléments dentés 34. Plus ce degré de fléchissement est important, plus la course du bouton-poussoir est grande et plus les dents des dentures de crémaillères 14 peuvent être hautes et les espaces entre ces dents profonds. Par suite, les éléments dentés 34 sont parfaitement crantés dans les dentures des crémaillères 14, de sorte qu'il est impossible de perdre accidentellement le réglage du maillon terminal 10. En outre, les exigences sur les tolérances des dentures de crémaillères 14 sont moindres, ce qui permet de réaliser des gains en termes de coûts de production. Comme précédemment, la pointe de la vis 50 fait saillie dans la rainure 16 ménagée dans le fond du couvercle 4, de sorte que le maillon terminal 10 de réglage fin est totalement imperdable une fois la vis 50 vissée. De même, comme déjà décrit ci-dessus, une vis 58 vissée dans le bouton-poussoir 32 est alignée avec la vis 50 afin de masquer la vis 50 et de ne pas laisser apparaître un trou au regard de l'utilisateur.  In particular, as illustrated in FIG. 5, it may be envisaged to replace the two coil springs 30 with a leaf spring 48. In the example shown in the drawing, this leaf spring 48 has a V-shaped profile. is fixed at its center by means of a screw 50 in the bottom 52 of the terminal link 1 0 and the push-button 32 is in elastic support on the two arms 54 of the leaf spring 48. The degree of deflection of these arms 54 determines the stroke of the push-button 32 and thus of the toothed elements 34. The greater this degree of deflection, the greater the stroke of the push-button and the more the teeth of the rack teeth 14 can be high and the spaces between these deep teeth. As a result, the toothed elements 34 are perfectly notched in the teeth of the racks 14, so that it is impossible to accidentally lose the setting of the end link 10. In addition, the requirements on the tolerances of the toothed racks 14 are smaller, which allows to realize gains in terms of production costs. As before, the tip of the screw 50 protrudes into the groove 16 formed in the bottom of the cover 4, so that the end link 10 of fine adjustment is completely captive once the screw 50 screwed. Similarly, as already described above, a screw 58 screwed into the push button 32 is aligned with the screw 50 to hide the screw 50 and not to reveal a hole in front of the user.
De même, comme illustré à la figure 6, il va de soi que le fermoir selon l'invention peut également être utilisé pour une ceinture vestimentaire. Dans ce cas, une première extrémité 60 de la ceinture 62 est reliée directement au couvercle 2 du fermoir, tandis que la seconde extrémité 64 de la ceinture 62 est reliée au couvercle 2 du fermoir avec interposition des moyens de liaison selon l'invention qui comprennent le maillon terminal 10.  Similarly, as illustrated in Figure 6, it goes without saying that the clasp according to the invention can also be used for a clothing belt. In this case, a first end 60 of the belt 62 is connected directly to the lid 2 of the clasp, while the second end 64 of the belt 62 is connected to the lid 2 of the clasp with the interposition of the connecting means according to the invention which comprise the terminal link 10.

Claims

REV E N D I CAT I ON S REV ENDI CAT I ON S
1 . Fermoir pour bracelet de montre ou pour ceinture comprenant un couvercle (2) relié d'un premier côté à un premier brin de bracelet (4) ou de ceinture et d'un second côté à un second brin de bracelet (8) ou de ceinture, des moyens de liaison étant interposés entre le second brin de bracelet (8) ou de ceinture et le couvercle (2) du fermoir (1 ), ces moyens de liaison comprenant un maillon terminal (1 0) coulissant suivant une direction longitudinale du fermoir (1 ) entre une première position dans laquelle le maillon terminal (10) est au moins partiellement engagé dans le couvercle (2) du fermoir (1 ), et une seconde position dans laquelle le maillon terminal (10) est dégagé du couvercle (2) du fermoir (1 ), le maillon terminal (10) comprenant un bouton-poussoir (32) par pression sur lequel il est possible de faire passer un élément denté (34) d'une première position dans laquelle l'élément denté (34) est en prise avec une denture de crémaillère (14) solidaire du couvercle (2) du fermoir (1 ), à une seconde position dans laquelle l'élément denté (34) est libéré de son engagement avec la denture de crémaillère (14), le fermoir étant caractérisé en ce que le maillon terminal (10) comprend un logement (28) dans lequel est disposé au moins un ressort (30), ce ressort (30) étant coiffé par le bouton-poussoir (32). 1. Clasp for a watch strap or belt comprising a cover (2) connected from one side to a first strand of bracelet (4) or belt and from a second side to a second strand of bracelet (8) or belt , connecting means being interposed between the second strap strand (8) or belt and the lid (2) of the clasp (1), these connecting means comprising a terminal link (1 0) sliding in a longitudinal direction of the clasp (1) between a first position in which the end link (10) is at least partially engaged in the cover (2) of the clasp (1), and a second position in which the end link (10) is disengaged from the cover (2). ) of the clasp (1), the terminal link (10) comprising a push-button (32) by pressure on which it is possible to pass a toothed element (34) from a first position in which the toothed element (34) ) is engaged with a rack toothing (14) integral with the aperture (2) of the clasp (1), at a second position in which the toothed element (34) is released from its engagement with the rack teeth (14), the clasp being characterized in that the end link (10) comprises a housing (28) in which is disposed at least one spring (30), this spring (30) being capped by the push button (32).
2. Fermoir selon la revendication 1 , caractérisé en ce que l'élément denté (34) est porté par le bouton-poussoir (32).  2. Clasp according to claim 1, characterized in that the toothed element (34) is carried by the pushbutton (32).
3. Fermoir selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le bouton-poussoir (32) est équipé d'un moyen d'arrêtage empêchant l'extraction du maillon terminal (10) du couvercle (2) de fermoir (1 ).  3. Clasp according to any one of claims 1 or 2, characterized in that the push button (32) is equipped with a stop means preventing the extraction of the end link (10) of the cover (2). clasp (1).
4. Fermoir selon la revendication 3, caractérisé en ce que le moyen d'arrêtage est démontable.  4. Clasp according to claim 3, characterized in that the stop means is removable.
5. Fermoir selon la revendication 4, caractérisé en ce que le moyen d'arrêtage est constitué par une vis (38) qui fait saillie dans une rainure (16) ménagée dans le fond du couvercle (2) et qui définit deux butées d'extrémité (1 8). 5. Clasp according to claim 4, characterized in that the stop means is constituted by a screw (38) which projects into a groove (16) formed in the bottom of the cover (2) and which defines two end stops (1 8).
6. Fermoir selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le moyen d'arrêtage est masqué au regard de l'utilisateur.  6. Clasp according to any one of claims 3 to 5, characterized in that the stop means is hidden from the view of the user.
7. Fermoir selon la revendication 6 en ce qu'elle dépend de la revendication 3, caractérisé en ce que le moyen d'arrêtage est masqué au moyen d'un bouchon chassé ou collé.  7. Clasp according to claim 6 in that it depends on claim 3, characterized in that the stop means is masked by means of a plug or removed.
8. Fermoir selon la revendication 6, caractérisé en ce que le moyen d'arrêtage est masqué au moyen d'une seconde vis (42).  8. Clasp according to claim 6, characterized in that the stop means is masked by means of a second screw (42).
9. Fermoir selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le couvercle (2) présente une section générale en forme de U et est muni de deux ailes (12) se faisant face, ces ailes (12) portant chacune sur leur face dirigée vers l'intérieur une denture de crémaillère (14).  9. Clasp according to any one of claims 1 to 8, characterized in that the cover (2) has a U-shaped general section and is provided with two wings (12) facing each other, these wings (12) bearing each on their inwardly directed face a rack gear (14).
1 0. Fermoir selon la revendication 9, caractérisé en ce que le maillon terminal (1 0) comprend des surfaces de guidage latérales (19) afin d'être guidé à coulissement dans le couvercle (2) entre le fond du couvercle (2) et les ailes (1 2).  Clasp according to claim 9, characterized in that the end link (1 0) comprises lateral guide surfaces (19) to be slidably guided in the cover (2) between the bottom of the cover (2). and the wings (1 2).
EP12759717.7A 2011-12-09 2012-09-17 Watch strap clasp Active EP2765883B1 (en)

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EP11192833.9A EP2601856A1 (en) 2011-12-09 2011-12-09 Watch strap clasp
PCT/EP2012/068255 WO2013083305A1 (en) 2011-12-09 2012-09-17 Clasp for a watch strap or belt
EP12759717.7A EP2765883B1 (en) 2011-12-09 2012-09-17 Watch strap clasp

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JP (1) JP5993461B2 (en)
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EP3769640A1 (en) 2019-07-26 2021-01-27 Omega SA Watch strap clasp

Also Published As

Publication number Publication date
EP2601856A1 (en) 2013-06-12
WO2013083305A1 (en) 2013-06-13
CN103987290B (en) 2016-09-28
JP2015500050A (en) 2015-01-05
CN103987290A (en) 2014-08-13
US9615634B2 (en) 2017-04-11
US20140352119A1 (en) 2014-12-04
EP2765883B1 (en) 2015-01-14
JP5993461B2 (en) 2016-09-14
HK1200669A1 (en) 2015-08-14
IN2014CN04163A (en) 2015-07-17

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