EP3488297B1 - Regulator key - Google Patents

Regulator key Download PDF

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Publication number
EP3488297B1
EP3488297B1 EP17742705.1A EP17742705A EP3488297B1 EP 3488297 B1 EP3488297 B1 EP 3488297B1 EP 17742705 A EP17742705 A EP 17742705A EP 3488297 B1 EP3488297 B1 EP 3488297B1
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EP
European Patent Office
Prior art keywords
arms
key
regulator
interstice
racket
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.)
Active
Application number
EP17742705.1A
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German (de)
French (fr)
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EP3488297A1 (en
Inventor
Laurent Kaelin
Fabien SCHLUP
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.)
ETA SA Manufacture Horlogere Suisse
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ETA SA Manufacture Horlogere Suisse
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Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Publication of EP3488297A1 publication Critical patent/EP3488297A1/en
Application granted granted Critical
Publication of EP3488297B1 publication Critical patent/EP3488297B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/02—Regulator or adjustment devices; Indexing devices, e.g. raquettes
    • G04B18/026—Locking the hair spring in the indexing device, e.g. goupille of the raquette
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block

Definitions

  • the invention relates to a racket key making it possible to guarantee the play of the hairspring even in the event of shocks.
  • the object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a new racket key whose arms make it possible to guarantee the play of the hairspring even in the event of shocks while remaining compact.
  • the invention relates to a racket key as defined in claim 1.
  • the invention relates to a watch movement comprising a balance resonator - hairspring and a gear system making it possible to adjust the active length of the hairspring, characterized in that the gear system comprises a gear key according to one of the variants previous.
  • the invention relates to a rack system 3 for a movement 1 of a timepiece.
  • the watch movement 1 further includes a resonator 5 of the balance 6 - hairspring 4 type mounted on a shaft 7 pivoting between a bridge 8 and a plate (not shown).
  • the racket system 3 is intended to adjust the active length of the hairspring 4. It mainly comprises a racket 9 and a racket key 11.
  • the racket 9 is mounted in its central part on the bridge 8 and supports the racket key 11 at using two blades 10a, 10b. As best seen at the figure 2 , the two blades 10a, 10b are used to lock the racket key 9 between its head 13 and its base 15.
  • the base 15 attached to the racket 9 will make it possible to adjust, by rotation of the racket 9 on the bridge 8, the relative position of the racket key 11 with respect to the length of the outer turn 2 of the hairspring 4 and, by rotation of the racket key 11 between the blades 10a, 10b, the movement of the outer turn 2 of the hairspring 4 between the arms 17a, 17b of the racket key 11.
  • the two arms 17a, 17b project from the base 15 parallel to each other, leaving a gap 16 arranged to receive the hairspring 4 as seen in figure 2 .
  • the two arms 17a, 17b each comprise a projecting surface which decreases as it moves away from the base 15 in order to limit the size of the end of the racket key 11.
  • the two arms 17a, 17b if they were joined together, would form an outer surface close to a truncated cone. Looking at the figure 2 , we see that this shape of the arms 17a, 17b provides compactness allowing more spatial freedom for the balance 6 as, for example, at the level of its flyweights 12.
  • the arms 17a, 17b each comprise a central portion 18a, 18b partially hollowed out so that the free end of each arm forms a hook 19a, 19b running along the gap 16, that is to say by not being protruding steps in gap 16.
  • the racket key 11 has an axis S of symmetry passing through the center of the base 15. This feature is particularly desired to avoid having a mounting direction of the racket key 11 between the two arms 10a, 10b.
  • this symmetry offers particular characteristics to the faces Fa, Fb of the arms 17a, 17b running along the gap 16.
  • the face Fa of the arm 17a is substantially C-shaped or inverted C-shaped. Consequently, the outer coil 2 of the hairspring 4 may, advantageously according to the invention, be received not only in the gap 16 but also in the partially hollowed central portions 18a, 18b of the arms 17a, 17b. It is therefore understood that the movement of the outer coil 2 of the hairspring 4 between the arms 17a, 17b of the racket key 11 will be provided by the abutment of the vertical part of the C or the inverted C of the faces Fa, Fb of the arms 17a , 17b along gap 16.
  • the faces Fa, Fb of the arms 17a, 17b running along the gap 16 are preferably flat and parallel.
  • the surfaces V of the faces Fa, Fb of the arms 17a, 17b along the gap 16 which face each other are substantially I-shaped.
  • the racket key 11 could be of different geometry to adapt to another type of hairspring and/or another type of balance wheel and/or another type of racket and/or another type of bridge.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Food-Manufacturing Devices (AREA)
  • Stringed Musical Instruments (AREA)
  • Toys (AREA)
  • Clamps And Clips (AREA)
  • Electric Clocks (AREA)

Description

Domaine de l'inventionField of invention

L'invention se rapporte à une clé de raquette permettant de garantir l'ébat du spiral même en cas de chocs.The invention relates to a racket key making it possible to guarantee the play of the hairspring even in the event of shocks.

Arrière-plan de l'inventionBackground of the invention

Il est connu dans les systèmes de raquetterie d'utiliser une raquette munie de deux goupilles ou d'une clé de raquette pour régler la longueur active d'un spiral. De plus, ces systèmes sont parfois pourvus d'un dispositif antichoc empêchant au spiral de sortir de l'interstice entre les goupilles ou de la clé de raquette lorsque le mouvement subit des chocs.It is known in racket systems to use a racket provided with two pins or a racket key to adjust the active length of a hairspring. In addition, these systems are sometimes provided with an anti-shock device preventing the hairspring from coming out of the gap between the pins or the racket key when the movement is subjected to shocks.

On connaît par exemple le document US 2007/091729 A1 qui divulgue une clé de raquette.We know, for example, the document US 2007/091729 A1 which discloses a racket key.

Toutefois, les systèmes de raquetterie actuels pourvus d'un dispositif antichoc sont encombrants et/ou ne permettent pas d'intervenir en après-vente pour, par exemple, changer le spiral.However, current rack systems provided with an anti-shock device are bulky and/or do not allow after-sales intervention to, for example, change the hairspring.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est de pallier tout ou partie les inconvénients cités précédemment en proposant une nouvelle clé de raquette dont les bras permettent de garantir l'ébat du spiral même en cas de chocs tout en restant compacts.The object of the present invention is to overcome all or part of the aforementioned drawbacks by proposing a new racket key whose arms make it possible to guarantee the play of the hairspring even in the event of shocks while remaining compact.

A cet effet, l'invention se rapporte à une clé de raquette telle que définie dans la revendication 1.To this end, the invention relates to a racket key as defined in claim 1.

Conformément à d'autres variantes avantageuses de l'invention :

  • la clé de raquette comporte un axe de symétrie passant par le centre de la base ;
  • les faces des bras longeant ledit interstice sont sensiblement en forme de C ;
  • les faces des bras longeant ledit interstice sont planes ;
  • les faces des bras longeant ledit interstice sont parallèles ;
  • les surfaces des faces des bras longeant ledit interstice qui se font vis-à-vis sont sensiblement en forme de I.
In accordance with other advantageous variants of the invention:
  • the racket key has an axis of symmetry passing through the center of the base;
  • the faces of the arms along said interstice are substantially C-shaped;
  • the faces of the arms along said interstice are flat;
  • the faces of the arms along said interstice are parallel;
  • the surfaces of the faces of the arms along said interstice which face each other are substantially I-shaped.

De plus, l'invention se rapporte à un mouvement horloger comportant un résonateur balancier - spiral et un système de raquetterie permettant de régler la longueur active du spiral caractérisé en ce que le système de raquetterie comprend une clé de raquette selon l'une des variantes précédentes.Furthermore, the invention relates to a watch movement comprising a balance resonator - hairspring and a gear system making it possible to adjust the active length of the hairspring, characterized in that the gear system comprises a gear key according to one of the variants previous.

Description sommaire des dessinsBrief description of the drawings

D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation partielle en perspective d'un mouvement selon l'invention ;
  • la figure 2 est une représentation en coupe de la figure 1 ;
  • la figure 3 est une représentation en perspective d'une clé de raquette selon l'invention ;
  • la figure 4 est une vue de dessus de la figure 3 ;
  • la figure 5 est une vue selon la coupe A-A de la figure 4 ;
  • la figure 6 est une vue selon la coupe B-B de la figure 4.
Other features and advantages will emerge clearly from the description given below, by way of indication and in no way limiting, with reference to the appended drawings, in which:
  • the figure 1 is a partial representation in perspective of a movement according to the invention;
  • the figure 2 is a cross-sectional representation of the figure 1 ;
  • the picture 3 is a representation in perspective of a racket key according to the invention;
  • the figure 4 is a top view of the picture 3 ;
  • the figure 5 is a view according to section AA of the figure 4 ;
  • the figure 6 is a view according to the BB section of the figure 4 .

Description détaillée des modes de réalisation préférésDetailed Description of Preferred Embodiments

Comme illustrée aux figures 1 et 2, l'invention se rapporte à un système de raquetterie 3 pour un mouvement 1 de pièce d'horlogerie. A ces figures 1 et 2, on peut voir que le mouvement 1 horloger comporte en outre un résonateur 5 du type balancier 6 - spiral 4 monté sur un arbre 7 pivotant entre un pont 8 et une platine (non représentée).As illustrated in figures 1 and 2 , the invention relates to a rack system 3 for a movement 1 of a timepiece. To these figures 1 and 2 , it can be seen that the watch movement 1 further includes a resonator 5 of the balance 6 - hairspring 4 type mounted on a shaft 7 pivoting between a bridge 8 and a plate (not shown).

Le système de raquetterie 3 est destiné à régler la longueur active du spiral 4. Il comporte principalement une raquette 9 et une clé de raquette 11. La raquette 9 est montée dans sa partie centrale sur le pont 8 et supporte la clé de raquette 11 à l'aide de deux lames 10a, 10b. Comme mieux visible à la figure 2, les deux lames 10a, 10b servent à bloquer la clé de raquette 9 entre sa tête 13 et sa base 15.The racket system 3 is intended to adjust the active length of the hairspring 4. It mainly comprises a racket 9 and a racket key 11. The racket 9 is mounted in its central part on the bridge 8 and supports the racket key 11 at using two blades 10a, 10b. As best seen at the figure 2 , the two blades 10a, 10b are used to lock the racket key 9 between its head 13 and its base 15.

On comprend donc que la base 15 attachée sur la raquette 9 va permettre de régler, par rotation de la raquette 9 sur le pont 8, la position relative de la clé de raquette 11 par rapport à la longueur de la spire externe 2 du spiral 4 et, par rotation de la clé de raquette 11 entre les lames 10a, 10b, l'ébat de la spire externe 2 du spiral 4 entre les bras 17a, 17b de la clé de raquette 11.It is therefore understood that the base 15 attached to the racket 9 will make it possible to adjust, by rotation of the racket 9 on the bridge 8, the relative position of the racket key 11 with respect to the length of the outer turn 2 of the hairspring 4 and, by rotation of the racket key 11 between the blades 10a, 10b, the movement of the outer turn 2 of the hairspring 4 between the arms 17a, 17b of the racket key 11.

Comme illustré aux figures 3 à 6, les deux bras 17a, 17b se projettent de la base 15 parallèlement l'un par rapport à l'autre en laissant un interstice 16 agencé pour recevoir le spiral 4 comme visible à la figure 2. De plus, les deux bras 17a, 17b comportent chacun une surface en projection qui diminue en s'éloignant de la base 15 afin de limiter l'encombrement de l'extrémité de la clé de raquette 11. Comme parfaitement visible à la figure 3, les deux bras 17a, 17b, s'ils étaient réunis, formeraient une surface externe proche d'un tronc de cône. En regardant la figure 2, on s'aperçoit que cette forme des bras 17a, 17b apporte une compacité permettant plus de liberté spatiale pour le balancier 6 comme, par exemple, au niveau de ses masselottes 12.As shown in figures 3 to 6 , the two arms 17a, 17b project from the base 15 parallel to each other, leaving a gap 16 arranged to receive the hairspring 4 as seen in figure 2 . In addition, the two arms 17a, 17b each comprise a projecting surface which decreases as it moves away from the base 15 in order to limit the size of the end of the racket key 11. As is perfectly visible in picture 3 , the two arms 17a, 17b, if they were joined together, would form an outer surface close to a truncated cone. Looking at the figure 2 , we see that this shape of the arms 17a, 17b provides compactness allowing more spatial freedom for the balance 6 as, for example, at the level of its flyweights 12.

En outre, les bras 17a, 17b comportent chacun une portion centrale 18a, 18b partiellement évidée afin que l'extrémité libre de chaque bras forme un crochet 19a, 19b longeant l'interstice 16, c'est-à-dire en n'étant pas saillants dans l'interstice 16.In addition, the arms 17a, 17b each comprise a central portion 18a, 18b partially hollowed out so that the free end of each arm forms a hook 19a, 19b running along the gap 16, that is to say by not being protruding steps in gap 16.

En regardant les figures 3 à 6, on s'aperçoit que la clé de raquette 11 comporte un axe S de symétrie passant par le centre de la base 15. Cette caractéristique est notamment souhaitée pour éviter d'avoir un sens de montage de la clé de raquette 11 entre les deux bras 10a, 10b.Looking at the figures 3 to 6 , we see that the racket key 11 has an axis S of symmetry passing through the center of the base 15. This feature is particularly desired to avoid having a mounting direction of the racket key 11 between the two arms 10a, 10b.

De plus, cette symétrie offre des caractéristiques particulières aux faces Fa, Fb des bras 17a, 17b longeant l'interstice 16. Ainsi, comme visible à la figure 6, la face Fa du bras 17a est sensiblement en forme de C ou de C inversé. Par conséquent, la spire externe 2 du spiral 4 pourra, avantageusement selon l'invention, être reçue non seulement dans l'interstice 16 mais également dans les portions centrales 18a, 18b partiellement évidée des bras 17a, 17b. On comprend donc que l'ébat de la spire externe 2 du spiral 4 entre les bras 17a, 17b de la clé de raquette 11 sera apporté par la butée de la partie verticale du C ou du C inversé des faces Fa, Fb des bras 17a, 17b longeant l'interstice 16.In addition, this symmetry offers particular characteristics to the faces Fa, Fb of the arms 17a, 17b running along the gap 16. Thus, as visible in figure 6 , the face Fa of the arm 17a is substantially C-shaped or inverted C-shaped. Consequently, the outer coil 2 of the hairspring 4 may, advantageously according to the invention, be received not only in the gap 16 but also in the partially hollowed central portions 18a, 18b of the arms 17a, 17b. It is therefore understood that the movement of the outer coil 2 of the hairspring 4 between the arms 17a, 17b of the racket key 11 will be provided by the abutment of the vertical part of the C or the inverted C of the faces Fa, Fb of the arms 17a , 17b along gap 16.

En outre, les faces Fa, Fb des bras 17a, 17b longeant l'interstice 16 sont préférentiellement planes et parallèles. On remarque enfin, grâce à la partie grisée à la figure 6, que les surfaces V des faces Fa, Fb des bras 17a, 17b longeant l'interstice 16 qui se font vis-à-vis sont sensiblement en forme de I.Furthermore, the faces Fa, Fb of the arms 17a, 17b running along the gap 16 are preferably flat and parallel. Finally, we notice, thanks to the shaded part at the figure 6 , that the surfaces V of the faces Fa, Fb of the arms 17a, 17b along the gap 16 which face each other are substantially I-shaped.

Ces caractéristiques permettent avantageusement selon l'invention de régler, par rotation de la raquette 9 sur le pont 8, la position relative de la clé de raquette 11 par rapport à la longueur de la spire externe 2 du spiral 4 et, par rotation de la clé de raquette 11 entre les lames 10a, 10b, l'ébat de la spire externe 2 du spiral 4 entre les bras 17a, 17b de la clé de raquette 11.These characteristics advantageously allow according to the invention to adjust, by rotation of the racket 9 on the bridge 8, the relative position of the racket key 11 with respect to the length of the outer turn 2 of the hairspring 4 and, by rotation of the racket key 11 between the blades 10a, 10b, the movement of the outer turn 2 of the hairspring 4 between the arms 17a, 17b of the racket key 11.

Comme visible à la figure 1, lorsque la clé de raquette 11 est tournée par rapport aux lames 10a, 10b, la spire externe 2 du spiral 4 est emprisonnée dans l'interstice 16 et les portions centrales 18a, 18b partiellement évidée des bras 17a, 17b. En effet, la courbure de la spire externe 2 du spiral 4 s'étendant dans les portions centrales 18a, 18b partiellement évidée des bras 17a, 17b, les crochets 19a, 19b empêchent au spiral 4 de pouvoir sortir de l'interstice 16 de la clé de raquette 11 même en cas de chocs subit par le mouvement.As seen at figure 1 , when the racket key 11 is turned relative to the blades 10a, 10b, the outer turn 2 of the hairspring 4 is trapped in the gap 16 and the partially recessed central portions 18a, 18b of the arms 17a, 17b. Indeed, the curvature of the outer turn 2 of the hairspring 4 extending in the partially hollowed central portions 18a, 18b of the arms 17a, 17b, the hooks 19a, 19b prevent the hairspring 4 from being able to come out of the gap 16 of the racket key 11 even in the event of shocks suffered by the movement.

Toutefois, il est toujours possible de libérer à nouveau le spiral 4 de la clé de raquette 11 comme, par exemple, pour une intervention en après-vente. Il suffit de tourner la clé de raquette 11 de manière à ce que les faces Fa, Fb des bras 17a, 17b soit parallèles par rapport à la hauteur de la spire externe 2 du spiral 4 puis de sortir le spiral le long de l'interstice 16.However, it is always possible to release the hairspring 4 from the racket key 11 again, for example for an after-sales intervention. It suffices to turn the racket key 11 so that the faces Fa, Fb of the arms 17a, 17b are parallel with respect to the height of the outer turn 2 of the hairspring 4 then take the hairspring out along the gap 16.

Bien entendu, la présente invention ne se limite pas à l'exemple illustré mais est susceptible de diverses variantes et modifications qui apparaîtront à l'homme de l'art. En particulier, la clé de raquette 11 pourrait être de géométrie différente pour s'adapter à un autre type de spiral et/ou un autre type de balancier et/ou un autre type de raquette et/ou un autre type de pont.Of course, the present invention is not limited to the example illustrated but is susceptible to various variants and modifications which will become apparent to those skilled in the art. In particular, the racket key 11 could be of different geometry to adapt to another type of hairspring and/or another type of balance wheel and/or another type of racket and/or another type of bridge.

On comprend, à titre d'exemple, que suivant l'épaisseur d'un autre spiral, il peut être souhaité une distance plus ou moins grande entre les faces Fa, Fb des bras 17a, 17b ou que suivant la distance entre une autre raquette et un autre spiral, il peut être souhaité une longueur plus ou moins grande des bras 17a, 17b.It is understood, by way of example, that depending on the thickness of another hairspring, a greater or lesser distance may be desired between the faces Fa, Fb of the arms 17a, 17b or that depending on the distance between another racket and another hairspring, a greater or lesser length of the arms 17a, 17b may be desired.

Claims (7)

  1. Regulator key (11) for a timepiece movement (1) comprising a base (15) arranged to be attached to a regulator (9) and carrying two arms (17a, 17b) arranged to limit the clearance of a balance spring (4) wherein the two arms (17a, 17b) project from the base (15) parallel to each other, leaving an interstice (16) arranged to receive said balance spring, the two arms (17a, 17b) each comprising a projecting surface which decreases away from the base (15) in order to limit the dimensions of the end of the regulator key (11) characterized in that the two arms (17a, 17b) each comprise a partially hollow central portion (18a, 18b) so that the free end of each arm forms a hook (19a, 19b) extending mainly parallel to the longitudinal direction of the interstice and running alongside said interstice arranged for receiving said balance spring and in that the two hooks extend in opposite directions.
  2. Regulator key (11) according to claim 1, characterized in that the regulator key (11) has an axis of symmetry (S) passing through the centre of the base (15).
  3. Regulator key (11) according to any of claims 1 and 2, characterized in that the sides (Fa, Fb) of the two arms (17a, 17b) running alongside said interstice are substantially C-shaped.
  4. Regulator key (11) according to any of the preceding claims, characterized in that the sides (Fa, Fb) of the two arms (17a, 17b) running alongside said interstice are flat.
  5. Regulator key (11) according to any of the preceding claims, characterized in that the sides (Fa, Fb) of the two arms (17a, 17b) running alongside said interstice are parallel.
  6. Regulator key (11) according to any of the preceding claims, characterized in that the surfaces of the sides (Fa, Fb) of the two arms (17a, 17b) running alongside said interstice, which face each other, are substantially I-shaped.
  7. Timepiece movement (1) comprising a resonator (5) with a balance (6) and balance spring (4) and a regulator system (3) for adjusting the active length of the balance spring (4), characterized in that the regulator system (3) comprises a regulator key (11) according to any of the preceding claims.
EP17742705.1A 2016-07-20 2017-07-13 Regulator key Active EP3488297B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16180431.5A EP3273310A1 (en) 2016-07-20 2016-07-20 Regulator key
PCT/EP2017/067772 WO2018015277A1 (en) 2016-07-20 2017-07-13 Index key

Publications (2)

Publication Number Publication Date
EP3488297A1 EP3488297A1 (en) 2019-05-29
EP3488297B1 true EP3488297B1 (en) 2022-02-23

Family

ID=56497672

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16180431.5A Withdrawn EP3273310A1 (en) 2016-07-20 2016-07-20 Regulator key
EP17742705.1A Active EP3488297B1 (en) 2016-07-20 2017-07-13 Regulator key

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16180431.5A Withdrawn EP3273310A1 (en) 2016-07-20 2016-07-20 Regulator key

Country Status (5)

Country Link
US (1) US11226592B2 (en)
EP (2) EP3273310A1 (en)
JP (1) JP6775664B2 (en)
CN (1) CN109478038B (en)
WO (1) WO2018015277A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1422975A4 (en) * 1975-11-04 1977-04-15
CH622150GA3 (en) * 1977-05-12 1981-03-31
JP4688627B2 (en) * 2005-10-24 2011-05-25 セイコーインスツル株式会社 Whistle stick structure, slow and quick needle equipped with the same, balance structure and mechanical watch
EP2290477B1 (en) * 2009-08-25 2014-06-11 Glashütter Uhrenbetrieb GmbH Assembly for fixing the peripheral end of the hairspring of a device with balance wheel-hairspring for a timepiece
CH702156B1 (en) * 2009-11-13 2017-08-31 Nivarox Far Sa Spiral balance resonator for a timepiece.
EP2474871B1 (en) * 2011-01-06 2017-05-10 ETA SA Manufacture Horlogère Suisse Index pin for sprung balance
JP6118037B2 (en) * 2012-05-08 2017-04-19 セイコーインスツル株式会社 Beardball, balance and watch
EP2876504B1 (en) * 2013-11-20 2017-07-26 ETA SA Manufacture Horlogère Suisse Screwless clock stud holder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP6775664B2 (en) 2020-10-28
CN109478038A (en) 2019-03-15
EP3273310A1 (en) 2018-01-24
CN109478038B (en) 2021-08-20
EP3488297A1 (en) 2019-05-29
US20200292992A1 (en) 2020-09-17
US11226592B2 (en) 2022-01-18
JP2019525165A (en) 2019-09-05
WO2018015277A1 (en) 2018-01-25

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