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EP0115740B1 - Foldable fastener for a bracelet - Google Patents

Foldable fastener for a bracelet Download PDF

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Publication number
EP0115740B1
EP0115740B1 EP19830810041 EP83810041A EP0115740B1 EP 0115740 B1 EP0115740 B1 EP 0115740B1 EP 19830810041 EP19830810041 EP 19830810041 EP 83810041 A EP83810041 A EP 83810041A EP 0115740 B1 EP0115740 B1 EP 0115740B1
Authority
EP
European Patent Office
Prior art keywords
blades
bracelet
cylinders
articulated arm
fastener according
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.)
Expired
Application number
EP19830810041
Other languages
German (de)
French (fr)
Other versions
EP0115740A1 (en
Inventor
Jacques Favre
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.)
Cornu & Cie SA
Original Assignee
Cornu & Cie 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 Cornu & Cie SA filed Critical Cornu & Cie SA
Priority to DE8383810041T priority Critical patent/DE3362646D1/en
Priority to EP19830810041 priority patent/EP0115740B1/en
Publication of EP0115740A1 publication Critical patent/EP0115740A1/en
Application granted granted Critical
Publication of EP0115740B1 publication Critical patent/EP0115740B1/en
Expired legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a folding clasp for a bracelet with a central part with side members comprising at each of its ends a leaflet capable of being folded over and made integral with said central part.
  • a clasp of this type is already known (for example described in US-A-1 839 788) in which, in the folded position, the leaflets in the form of massive pieces of rectangular section are made integral with the central part with side members by tightening with notch of their free end on cross members disposed between the side members.
  • the security of closure of such a device leaves something to be desired by the fact that it is relatively easy to disengage the free ends of the leaflets from the crosspieces on which they clamp.
  • notch tightening requires a relatively large material thickness of the leaflets not allowing the production of a thin clasp.
  • Document FR-E-41 138 also describes a clasp of the same type and in which projections are provided on each side of the folding arms, these projections engaging in housings provided in the internal lateral faces of the notches.
  • the elasticity necessary for the notch closure is given by longitudinal slots made in the section of the longitudinal members of the connecting element is insufficient to allow projections and housings of a length sufficient to ensure reliability and closing security of the clasp and also reducing wear on the parts of the notch closure.
  • the object of the present invention is therefore to produce a clasp for a bracelet, in particular for a watch, having a high closing security and capable of being produced in a thin version.
  • the leaflets are formed of blades whose profiled outer edge fits notch into the inner edge of the complementary profile of the side members, the security of the closure is increased and the clasp can be produced in a thin version.
  • the clasp consists of a central part 1 with side members 2 and 3 assembled in their middle by a cross member 4.
  • a leaflet 5 which, in a first embodiment of the invention is formed by two parallel blades 6 and 7 each assembled in a rotary manner to the side members 2 and 3 by a hinge 9 around an axis 8 set in the side members.
  • the blades 6 and 7 are separated from each other by a spring 10 shown in Figure 4 and mounted around the axis 8 in the hinges 9.
  • the blades 6 and 7 are welded to spring cylinders 11 and 12 shown in FIG. 3.
  • the cylinders 11 and 12, each carrying a bar 14, fit into one another and are separated from each other with the bars 14 by a spring 13 mounted inside the cylinders, around the bars.
  • Figure 3 shows that the outer edge of the blades 6 and 7 has a profile P1, formed for example of the intersection of two inclined planes and that the side members 2 and 3 have in their inner edge a profile P2 of complementary shape.
  • the profiles P1 and P2 can be provided over the entire length of the blades and the side members or over only part of this length.
  • the leaflets 5 When the bracelet is open, the leaflets 5 are spread outwards and the blades 6 and 7 are separated from one another by the springs 10 and 13.
  • the profiles P1 and P2 interpenetrate against the action of the springs, which produces a mutual approximation of the blades 6 and 7, the profile P1 of which is then inserted into the complementary profile P2 of the stringers.
  • the blades and the side members are then kept nested by the action of the springs. This ensures, in the closed state, a notched fixing of the blades with the side members.
  • To open the bracelet simply release the leaflets by removing them outwards against the force of the springs.
  • the clasp according to the invention can be produced in a thin execution by the fact that the notch fixing is produced using profiles included in the thickness of the blades and the longitudinal members of the clasp.
  • the security of the fixing is all the higher as the profiles P1 and P2 extend over a greater length in the blades and the side members.
  • the reliability of the clasp is increased by the fact that the springs 10 and 13 are only very slightly stressed. There is therefore practically no risk of destruction of the springs by repeated fatigue.
  • the notch fixing effect is manifested over a considerable length of the profiles P1 and P2, the effect of the wear of the edges of these profiles is much less significant than in the case of a notch fixing in a single point.
  • the spring 10 of the hinges 9 is not absolutely necessary and it can without further elimination. It is also obvious that the complementary profiles P1 and P2 can be interchanged, the profile P1 then being provided on the side members 2 and 3 and the profile P2 on the blades 6 and 7. Similarly, any other pair of appropriate complementary profiles can be used.
  • FIG. 5 shows a second embodiment of the clasp according to the invention in which the blades 15 and 16 of the leaflets, similar to the blades 6 and 7 of the first embodiment are connected to a common base 18 to form the branches an elastic piece in the form of a tuning fork.
  • the hinge 17 allowing the rotation of the leaflets 5 around the axis 8 is in one piece and has no spring.
  • the cylinders 11 and 12 also have no spring and, when the bracelet is closed, the pressure exerted on the folded flyers on the central part 1 allows the interpenetration of the profiles P1 and P2 against the elasticity of the branches of the tuning fork, the notched fixing of the branches 15 and 16 with the side members 2 and 3 being ensured, in the closed state, by the elasticity of the branches of the tuning fork.
  • the profiles P2 are preferably provided over a certain length of the longitudinal members, adjacent to the central cross-member 4 and the profiles P1 of the blades 15 and 16 of the tuning fork on a corresponding part of at least length equal to or preferably greater than that of P2 profiles.
  • This second embodiment is therefore considerably simpler in design than that of the first embodiment. It does not have any spring which makes it even more reliable. It also offers the advantage of allowing precise metering of the pressure of the notch fixing.
  • FIGS 6 and 7 show a third embodiment of the clasp according to the invention in which the leaflets are each formed from a single solid blade 19 fixed to the hinge 17 to allow their rotation about the axis 8.
  • the other end of the blade 19 is fixed to a cylinder 20 carrying two bars 14 allowing the attachment of a strand of the bracelet (not shown).
  • the profiles P2 are provided over a certain length of the inner edges of the side members 2 and 3, themselves elastic, at equal distance between the central span 4 and the ends of the side members.
  • the profiles P1 of the blade 19 are located on a corresponding central part of the edges of this blade and their length is at least equal to or greater than that of the profiles P2.
  • the third embodiment of the invention is of very simple design.
  • it allows the production of a clasp in an economical version and it offers the main advantage of eliminating the milling necessary for the separation of the blades 15 and 16 of the tuning fork of FIG. 5, milling which is a source of machining difficulties when 'it is made for example in a stainless steel part.

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  • Adornments (AREA)

Description

La présente invention concerne un fermoir dépliant pour bracelet avec une partie centrale à longerons comportant à chacune de ses extrémités un dépliant susceptible d'être rabattu sur et rendu solidaire de ladite partie centrale.The present invention relates to a folding clasp for a bracelet with a central part with side members comprising at each of its ends a leaflet capable of being folded over and made integral with said central part.

On connaît déjà un fermoir de ce type (par exemple décrit dans US-A-1 839 788) dans lequel, en position rabattue, les dépliants en forme de pièces massives de section rectangulaire sont rendus solidaires de la partie centrale à longerons par serrage à cran de leur extrémité libre sur des traverses disposées entre les longerons. Cependant, la sécurité de fermeture d'un tel dispositif laisse à désirer par le fait qu'il est relativement facile de dégager les extrémités libres des dépliants des traverses sur lesquelles elles serrent à cran. En outre, le serrage à cran nécessite une épaisseur de matière relativement grande des dépliants ne permettant pas la réalisation d'un fermoir mince.A clasp of this type is already known (for example described in US-A-1 839 788) in which, in the folded position, the leaflets in the form of massive pieces of rectangular section are made integral with the central part with side members by tightening with notch of their free end on cross members disposed between the side members. However, the security of closure of such a device leaves something to be desired by the fact that it is relatively easy to disengage the free ends of the leaflets from the crosspieces on which they clamp. In addition, notch tightening requires a relatively large material thickness of the leaflets not allowing the production of a thin clasp.

Le document FR-E-41 138 décrit aussi un fermoir de ce même type et dans lequel sont prévues des saillies de chaque côté des bras dépliants, ces saillies s'engageant dans des logements prévus dans les faces latérales intérieures des échancrures. Toutefois l'élasticité nécessaire à la fermeture à cran est donnée par des lumières longitudinales réalisées dans la section des longerons de l'élément de liaison est insuffisante pour permettre de prévoir des saillies et des logements d'une longueur suffisante pour assurer la fiabilité et la sécurité de fermeture du fermoir et aussi diminuer l'usure des parties de la fermeture à cran.Document FR-E-41 138 also describes a clasp of the same type and in which projections are provided on each side of the folding arms, these projections engaging in housings provided in the internal lateral faces of the notches. However, the elasticity necessary for the notch closure is given by longitudinal slots made in the section of the longitudinal members of the connecting element is insufficient to allow projections and housings of a length sufficient to ensure reliability and closing security of the clasp and also reducing wear on the parts of the notch closure.

Le but de la présente invention est donc de réaliser un fermoir pour bracelet, notamment de montre, présentant une sécurité de fermeture élevée et susceptible d'être réalisé en version mince.The object of the present invention is therefore to produce a clasp for a bracelet, in particular for a watch, having a high closing security and capable of being produced in a thin version.

Pour atteindre ce but, le fermoir selon l'invention est réalisé comme défini dans les revendications.To achieve this object, the clasp according to the invention is produced as defined in the claims.

Par le fait que les dépliants sont formés de lames dont le bord extérieur profilé s'emboîte à cran dans le bord intérieur de profil complémentaire des longerons, la sécurité de la fermeture est augmentée et le fermoir peut être réalisé en version mince.By the fact that the leaflets are formed of blades whose profiled outer edge fits notch into the inner edge of the complementary profile of the side members, the security of the closure is increased and the clasp can be produced in a thin version.

L'invention va être décrite ci-après, à titre d'exemple et à l'aide du dessin dans lequel :

  • La figure 1 est une vue latérale du fermoir ;
  • La figure 2 est une vue en plan du fermoir de la figure 1 ;
  • La figure 3 est une vue en coupe selon la ligne III-III de la figure 1 ;
  • La figure 4 est une vue en coupe selon la ligne IV-IV de la figure 1 ;
  • La figure 5 est une vue en plan d'une deuxième forme d'exécution du fermoir ;
  • La figure 6 est une vue en perspective d'une troisième forme d'exécution du fermoir, et
  • La figure 7 est une coupe transversale du fermoir de la figure 6 en position rabattue.
The invention will be described below, by way of example and with the aid of the drawing in which:
  • Figure 1 is a side view of the clasp;
  • Figure 2 is a plan view of the clasp of Figure 1;
  • Figure 3 is a sectional view along line III-III of Figure 1;
  • Figure 4 is a sectional view along line IV-IV of Figure 1;
  • Figure 5 is a plan view of a second embodiment of the clasp;
  • FIG. 6 is a perspective view of a third embodiment of the clasp, and
  • Figure 7 is a cross section of the clasp of Figure 6 in the folded position.

Comme indiqué dans les figures 1 et 2, le fermoir se compose d'une partie centrale 1 à longerons 2 et 3 assemblés en leur milieu par une traverse 4. A chaque extrémité de la partie centrale 1 est monté un dépliant 5 qui, dans une première forme d'exécution de l'invention est formé de deux lames parallèles 6 et 7 assemblées chacune de manière rotative aux longerons 2 et 3 par une charnière 9 autour d'un axe 8 serti dans les longerons. Les lames 6 et 7 sont écartées l'une de l'autre par un ressort 10 représenté en figure 4 et monté autour de l'axe 8 dans les charnières 9. A l'extrémité libre opposée, les lames 6 et 7 sont soudées à des cylindres à ressort 11 et 12 représentés en figure 3. Les cylindres 11 et 12, portant chacun une barrette 14, s'emboîtent l'un dans l'autre et sont écartés l'un de l'autre avec les barrettes 14 par un ressort 13 monté à l'intérieur des cylindres, autour des barrettes. Ces dernières permettent le montage d'un brin du bracelet (non représenté).As shown in Figures 1 and 2, the clasp consists of a central part 1 with side members 2 and 3 assembled in their middle by a cross member 4. At each end of the central part 1 is mounted a leaflet 5 which, in a first embodiment of the invention is formed by two parallel blades 6 and 7 each assembled in a rotary manner to the side members 2 and 3 by a hinge 9 around an axis 8 set in the side members. The blades 6 and 7 are separated from each other by a spring 10 shown in Figure 4 and mounted around the axis 8 in the hinges 9. At the opposite free end, the blades 6 and 7 are welded to spring cylinders 11 and 12 shown in FIG. 3. The cylinders 11 and 12, each carrying a bar 14, fit into one another and are separated from each other with the bars 14 by a spring 13 mounted inside the cylinders, around the bars. These allow the mounting of a strand of the bracelet (not shown).

La figure 3 montre que le bord extérieur des lames 6 et 7 comporte un profil P1, formé par exemple de l'intersection de deux plans inclinés et que les longerons 2 et 3 comportent dans leur bord intérieur un profil P2 de forme complémentaire. Les profils P1 et P2 peuvent être prévus sur toute la longueur des lames et des longerons ou sur une partie seulement de cette longueur.Figure 3 shows that the outer edge of the blades 6 and 7 has a profile P1, formed for example of the intersection of two inclined planes and that the side members 2 and 3 have in their inner edge a profile P2 of complementary shape. The profiles P1 and P2 can be provided over the entire length of the blades and the side members or over only part of this length.

Lorsque le bracelet est ouvert, les dépliants 5 sont écartés vers l'extérieur et les lames 6 et 7 sont écartées l'une de l'autre par les ressorts 10 et 13. En rabattant les dépliants sur la partie centrale 1 pour fermer le bracelet et en exerçant une pression sur ces dépliants, les profils P1 et P2 s'interpénètrent contre l'action des ressorts, ce qui produit un rapprochement mutuel des lames 6 et 7 dont le profil P1 vient alors s'insérer dans le profil complémentaire P2 des longerons. Les lames et les longerons sont alors maintenus emboîtés par l'action des ressorts. Ceci assure, à l'état fermé, une fixation à cran des lames avec les longerons. Pour ouvrir le bracelet, il suffit de dégager les dépliants en les retirant vers l'extérieur contre la force des ressorts.When the bracelet is open, the leaflets 5 are spread outwards and the blades 6 and 7 are separated from one another by the springs 10 and 13. By folding the leaflets on the central part 1 to close the bracelet and by exerting pressure on these leaflets, the profiles P1 and P2 interpenetrate against the action of the springs, which produces a mutual approximation of the blades 6 and 7, the profile P1 of which is then inserted into the complementary profile P2 of the stringers. The blades and the side members are then kept nested by the action of the springs. This ensures, in the closed state, a notched fixing of the blades with the side members. To open the bracelet, simply release the leaflets by removing them outwards against the force of the springs.

Ce qui précède montre que le fermoir selon l'invention peut être réalisé en exécution mince par le fait que la fixation à cran est produite à l'aide de profils compris dans l'épaisseur des lames et des longerons du fermoir. La sécurité de la fixation est d'autant plus élevée que les profils P1 et P2 s'étendent sur une plus grande longueur dans les lames et les longerons. La fiabilité du fermoir est augmentée par le fait que les ressorts 10 et 13 ne sont que très faiblement sollicités. Il n'existe donc pratiquement pas de risque de destruction des ressorts par une fatigue répétée. Par le fait que l'effet de fixation à cran se manifeste sur une longueur notable des profils P1 et P2, l'effet de l'usure des arêtes de ces profils est beaucoup moins important que dans le cas d'une fixation à cran en un seul point.The above shows that the clasp according to the invention can be produced in a thin execution by the fact that the notch fixing is produced using profiles included in the thickness of the blades and the longitudinal members of the clasp. The security of the fixing is all the higher as the profiles P1 and P2 extend over a greater length in the blades and the side members. The reliability of the clasp is increased by the fact that the springs 10 and 13 are only very slightly stressed. There is therefore practically no risk of destruction of the springs by repeated fatigue. By the fact that the notch fixing effect is manifested over a considerable length of the profiles P1 and P2, the effect of the wear of the edges of these profiles is much less significant than in the case of a notch fixing in a single point.

Dans la première forme d'exécution décrite ci- dessus, le ressort 10 des charnières 9 n'est pas absolument nécessaire et il peut sans autre être éliminé. Il est d'autre part évident que les profils complémentaires P1 et P2 peuvent être inter- changés, le profil P1 étant alors prévu sur les longerons 2 et 3 et le profil P2 sur les lames 6 et 7. De même, toute autre paire de profils complémentaires appropriés peut être utilisée.In the first embodiment described below above, the spring 10 of the hinges 9 is not absolutely necessary and it can without further elimination. It is also obvious that the complementary profiles P1 and P2 can be interchanged, the profile P1 then being provided on the side members 2 and 3 and the profile P2 on the blades 6 and 7. Similarly, any other pair of appropriate complementary profiles can be used.

La figure 5 montre une deuxième forme d'exécution du fermoir selon l'invention dans laquelle les lames 15 et 16 des dépliants, analogues aux lames 6 et 7 de la première forme d'exécution sont raccordées à une base commune 18 pour former les branches d'une pièce élastique en forme de diapason. Dans ce cas, la charnière 17 permettant la rotation des dépliants 5 autour de l'axe 8 est d'une seule pièce et ne comporte aucun ressort. Les cylindres 11 et 12 ne comportent également aucun ressort et, lors de la fermeture du bracelet, la pression exercée sur les dépliants rabattus sur la partie centrale 1 permet l'interpénétration des profils P1 et P2 contre l'élasticité des branches du diapason, la fixation à cran des branches 15 et 16 avec les longerons 2 et 3 étant assurée, à l'état fermé, par l'élasticité des branches du diapason. Dans la forme d'exécution de la figure 5, les profils P2 sont prévus de préférence sur une certaine longueur des longerons, adjacente à la traverse centrale 4 et les profils P1 des lames 15 et 16 du diapason sur une partie correspondante de longueur au moins égale ou de préférence supérieure à celle des profils P2.FIG. 5 shows a second embodiment of the clasp according to the invention in which the blades 15 and 16 of the leaflets, similar to the blades 6 and 7 of the first embodiment are connected to a common base 18 to form the branches an elastic piece in the form of a tuning fork. In this case, the hinge 17 allowing the rotation of the leaflets 5 around the axis 8 is in one piece and has no spring. The cylinders 11 and 12 also have no spring and, when the bracelet is closed, the pressure exerted on the folded flyers on the central part 1 allows the interpenetration of the profiles P1 and P2 against the elasticity of the branches of the tuning fork, the notched fixing of the branches 15 and 16 with the side members 2 and 3 being ensured, in the closed state, by the elasticity of the branches of the tuning fork. In the embodiment of FIG. 5, the profiles P2 are preferably provided over a certain length of the longitudinal members, adjacent to the central cross-member 4 and the profiles P1 of the blades 15 and 16 of the tuning fork on a corresponding part of at least length equal to or preferably greater than that of P2 profiles.

Cette deuxième forme d'exécution est donc de conception passablement plus simple que celle de la première forme d'exécution. Elle ne comporte aucun ressort ce qui la rend encore plus fiable. Elle offre en outre l'avantage de permettre le dosage précis de la pression de la fixation à cran.This second embodiment is therefore considerably simpler in design than that of the first embodiment. It does not have any spring which makes it even more reliable. It also offers the advantage of allowing precise metering of the pressure of the notch fixing.

Les figures 6 et 7 montrent une troisième forme d'exécution du fermoir selon l'invention dans laquelle les dépliants sont formés chacun d'une seule lame pleine 19 fixée à la charnière 17 pour permettre leur rotation autour de l'axe 8. L'autre extrémité de la lame 19 est fixée à un cylindre 20 porteur de deux barrettes 14 permettant la fixation d'un brin du bracelet (non représenté). Dans la forme d'exécution des figures 6 et 7, les profils P2 sont prévus sur une certaine longueur des bords intérieurs des longerons 2 et 3, eux-mêmes élastiques, à égale distance entre la travere centrale 4 et les extrémités des longerons. Les profils P1 de la lame 19 sont situés sur une partie centrale correspondante des bords de cette lame et leur longueur est au moins égale ou supérieure à celle des profils P2. Lors de la fermeture du bracelet, les dépliants sont rabattus sur la partie centrale 1 et une pression exercée sur ces dépliants force les profils P1 et P2 à s'engager à cran contre l'élasticité des moitiés de longerons à partir de la traverse centrale 4.Figures 6 and 7 show a third embodiment of the clasp according to the invention in which the leaflets are each formed from a single solid blade 19 fixed to the hinge 17 to allow their rotation about the axis 8. The other end of the blade 19 is fixed to a cylinder 20 carrying two bars 14 allowing the attachment of a strand of the bracelet (not shown). In the embodiment of Figures 6 and 7, the profiles P2 are provided over a certain length of the inner edges of the side members 2 and 3, themselves elastic, at equal distance between the central span 4 and the ends of the side members. The profiles P1 of the blade 19 are located on a corresponding central part of the edges of this blade and their length is at least equal to or greater than that of the profiles P2. When the bracelet is closed, the leaflets are folded down on the central part 1 and a pressure exerted on these leaflets forces the profiles P1 and P2 to engage notch against the elasticity of the beams halves from the central crosspiece 4 .

Ce qui précède montre que la troisième forme d'exécution de l'invention est de conception très simple. En particulier, elle permet la réalisation d'un fermoir en version économique et elle offre comme avantage principal de supprimer le fraisage nécessaire à la séparation des lames 15 et 16 du diapason de la figure 5, fraisage qui est source de difficultés d'usinage lorsqu'il est réalisé par exemple dans une pièce en acier inoxydable.The above shows that the third embodiment of the invention is of very simple design. In particular, it allows the production of a clasp in an economical version and it offers the main advantage of eliminating the milling necessary for the separation of the blades 15 and 16 of the tuning fork of FIG. 5, milling which is a source of machining difficulties when 'it is made for example in a stainless steel part.

Claims (6)

1. Foldable fastener for a bracelet with a stiff support (1) having longitudinal beams (2, 3) and comprising at each of its extremities an articulated arm (5) fastened at one extremity to a strap of the bracelet and capable of being pressed down on said support for being rendered integral thereof, characterized in that each articulated arm (5) is provided on its external lateral sides with a profile (P1) having a length equal to at least half of the length of the articulated arm (5), said profile (P1) engaging, in the pressed down position of the articulated arm, in a profile (P2) of complementary form and of corresponding length provided in the internal lateral sides of the longitudinal beams (2, 3), the articulated arms (5) comprising elastic means operable to be adjusted for ensuring a snap fitting of the articulated arms (5) on the stiff support (1).
2. Fastener according to claim 1, characterized in that each articulated arm comprises two blades (6, 7) arranged side by side, each of said blades (6, 7) being assembled to the extremity of said stiff support (1) by a hinge joint (9) pivoting about a pin (8).
3. Fastener according to claim 2, characterized in that said blades (6, 7) are spaced apart by a spring (10) provided about the pin (8) in said hinge joint (9).
4. Fastener according to claim 2 or 3, characterized in that said blades (6, 7) are assembled at their free end to cylinders (11, 12) having a lug (14) permitting the fastening of a strap of the bracelet, said cylinders engaging mutually and being spaced apart with said lugs by a spring (13) provided about said lugs (14) inside said cylinders.
5. Fastener According to claim 4, characterized in that in the pressed down condition of the fastener, said blades (6, 7) and said longitudinal beams (2, 3) engage mutually by snap fitting, said profiles of complementary form (P1, P2) being held within each other under the action of the pressure exerted by at least one of said springs (13).
6. Fastener according to claim 1, characterized in that each articulated arm comprises two blades (15, 16) arranged side by side, said blades forming the branches of a tuning fork fastened at the extremity of the stiff support (1) by a hinge joint (17), the branches (15, 16) being fastened at their free extremity to cylinders (11, 12) having a lug (14) permitting the fastening of a strap of the bracelet, said cylinders engaging mutually and being spaced apart with the lugs by the elasticity of the branches (15, 16) of the tuning fork.
EP19830810041 1983-02-02 1983-02-02 Foldable fastener for a bracelet Expired EP0115740B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8383810041T DE3362646D1 (en) 1983-02-02 1983-02-02 Foldable fastener for a bracelet
EP19830810041 EP0115740B1 (en) 1983-02-02 1983-02-02 Foldable fastener for a bracelet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830810041 EP0115740B1 (en) 1983-02-02 1983-02-02 Foldable fastener for a bracelet

Publications (2)

Publication Number Publication Date
EP0115740A1 EP0115740A1 (en) 1984-08-15
EP0115740B1 true EP0115740B1 (en) 1986-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830810041 Expired EP0115740B1 (en) 1983-02-02 1983-02-02 Foldable fastener for a bracelet

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DE (1) DE3362646D1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0216658Y2 (en) * 1985-06-18 1990-05-09
CH674447A5 (en) * 1987-11-19 1990-06-15 G Et F Chatelain S A
CH678002A5 (en) * 1989-02-16 1991-07-31 Petitjean Sa
CH684151A5 (en) * 1990-11-28 1994-07-29 Cornu & Cie S A Bracelet clasp
FR2704120B1 (en) * 1993-04-19 1995-06-30 Maier Folding clasp for bracelet.
FR2723824A1 (en) * 1994-08-31 1996-03-01 Alain Bonnet Fastener for bracelet with arms articulated on base
CH690894A5 (en) * 1996-07-01 2001-02-28 Vacheron & Constantin S A Folding clasp, in particular with button.
CN1248889A (en) * 1997-01-13 2000-03-29 劳力士钟表有限公司 Clasp with triple folding
DE60005479T2 (en) * 2000-03-23 2004-07-01 Richemont International S.A. strap closure
FR2821725A1 (en) * 2001-03-07 2002-09-13 Luigi Ferrario FOLDING CLASP FOR BRACELET
US6792652B2 (en) 2003-02-25 2004-09-21 Luigi Ferrario Unfolding clasp for bracelet
EP4176757B1 (en) * 2021-11-08 2024-05-08 Dexel S.A. Clasp with extensible loop

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US1791037A (en) * 1931-02-03 And george d
CH134431A (en) * 1929-01-10 1929-07-31 Goitry Jean Dispositif de fermeture pour pièces telles que montres-bracelets, bracelets, necklaces, etc.
US1839788A (en) * 1930-05-29 1932-01-05 Gen Chain Company Foldable extension device
US1832734A (en) * 1931-02-17 1931-11-17 Gemex Co Extension device
FR537072A (en) * 1931-04-14 1922-05-15 Etablissements Ed Jaeger Soc D Closing system for bracelets, watch holders, etc. and new products resulting from its application
FR826561A (en) * 1936-12-18 1938-04-04 Chatenoud & Cie J Clasp for expandable metal watch straps and the like
CH633698A5 (en) * 1979-09-26 1982-12-31 Nemi Sa Bracelet with clasp

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EP0115740A1 (en) 1984-08-15
DE3362646D1 (en) 1986-04-30

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