EP2230572B1 - Radial gripping system for a timepiece component - Google Patents

Radial gripping system for a timepiece component Download PDF

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Publication number
EP2230572B1
EP2230572B1 EP09155376A EP09155376A EP2230572B1 EP 2230572 B1 EP2230572 B1 EP 2230572B1 EP 09155376 A EP09155376 A EP 09155376A EP 09155376 A EP09155376 A EP 09155376A EP 2230572 B1 EP2230572 B1 EP 2230572B1
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EP
European Patent Office
Prior art keywords
timepiece component
crown
timepiece
radial force
clamping system
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
EP09155376A
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German (de)
French (fr)
Other versions
EP2230572A1 (en
Inventor
Marco Verardo
Thierry Conus
Jean-Philippe Thiébaud
Jean-Bernard Peters
Pierre Cusin
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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 Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP09155376A priority Critical patent/EP2230572B1/en
Priority to TW099105975A priority patent/TWI479286B/en
Priority to KR1020100022016A priority patent/KR20100105405A/en
Priority to RU2010109850/28A priority patent/RU2525321C2/en
Priority to US12/725,682 priority patent/US8277117B2/en
Priority to JP2010061430A priority patent/JP5189612B2/en
Priority to CN2010101364666A priority patent/CN101840196B/en
Publication of EP2230572A1 publication Critical patent/EP2230572A1/en
Priority to HK10110804.3A priority patent/HK1144212A1/en
Application granted granted Critical
Publication of EP2230572B1 publication Critical patent/EP2230572B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft

Definitions

  • the invention relates to a radial clamping system for a watch component and more, particularly, such a system for securing said component to a support member such as, for example, a pivot axis.
  • the document CH 282 774 discloses a needle whose head is formed by a cylindrical body of metal whose thickness is greater than the rest of the needle forming a barrel.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by providing a clock component whose radial clamping system uses only the elastic deformation zone of the material to become integral with its support member.
  • the invention relates to a watch component according to claim 1.
  • the invention also relates to a timepiece characterized in that it comprises at least one watch component according to one of the preceding variants.
  • the invention relates to a generally annotated watch component 1 intended to cooperate with a support element 3.
  • the watch component 1 is a substantially discoidal mobile and the support element 3, a cylindrical axis with circular section, however, they can not be limited.
  • a watch component 1 mounted on a support element 3 can be seen.
  • the support element 3 comprises an axis 2 formed integrally with a pinion 4.
  • the watch component 1 comprises a hub 5 comprising an opening 7, four arm 9 and a toothed serge 11.
  • the watch component 1 is mounted on the support member 3 by means of a clamping system 13 located around the opening 7 passing through said component.
  • the clamping system 13 is intended to exert a radial stress on the axis 2 to secure the watch component 1 with the support member 3.
  • the clamping system 13 is an alternative to driving that is not always possible for materials such as silicon carbide, crystallized silicon, crystallized silica or crystallized alumina.
  • the clamping system 13 preferably comprises a radial clamping device 15 and a locking device 17.
  • the clamping device 15 mainly comprises a ring 6 and a recess 8.
  • the ring 6 is intended to clamp the outer surface of the axis 2 It is preferably crenellated and comprises several blades 12 whose section inner 14 forms the edge of the opening 7 to better locally manage the movement of the crown 6.
  • each blade 12 is independent and moves elastically according to the own stress that is subject to it.
  • the inner section 14 is frustoconical at an angle ⁇ in order to locally increase the pinch stress.
  • the upper section of the opening 7 is thus smaller than the lower section.
  • the angle ⁇ may be between substantially 0 and 5 degrees. It is therefore understood that the clamping stress of the ring 6 of the clamping device 15 will be maximum at its free end, that is to say at the end of the blades 12.
  • the recess 8 is intended to allow a clearance of the crown 6.
  • the recess 8 is preferably blind and communicates between each blade 12 with the opening 7.
  • Each blade 12 can thus glide independently between the 8 and the opening 7.
  • the recess 8 is also intended to cooperate with the locking device 17.
  • the recess 8 may have a depth of between 5 and 85% of the thickness of the watch component.
  • the locking device 17 is intended to maintain a minimum stress of the clamping system 13 against the axis 2 by limiting the sway of the blades 12 when the overall positioning is considered satisfactory.
  • the locking device 17 comprises a substantially discoidal locking key 10 comprising a hole 16 and on the lower face a collar 18.
  • the hole 16 is through and of larger internal section than the outer diameter of the axis 2 in order to slide without fat friction.
  • the collar 18 of general annular shape has a substantially frustoconical inner section 19 in order to progressively lock the positioning of the blades 12.
  • the locking key 10 is slid against the axis 2 through its hole 16 so that its flange 18 is received in the recess 8.
  • the flange 18, once inserted, thus prevents the displacement of the blades 12 towards the recess 8 by abutment of its inner section 19 by locking their positioning.
  • the watch component 1 is made of micro-machinable material so as to obtain a precision less than one micron.
  • Such materials may be, for example, but not exclusively silicon carbide, crystallized silicon, crystallized alumina or crystalline silica. Indeed, such materials can be etched according to the required accuracy, in particular by means of a process of the deep reactive ion etching (DRIE) type.
  • the locking key 10 is formed of a ductile material such as, for example, a metal.
  • the present invention which is defined by the appended claims, is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • the dimensions of the recess 8 and the flange 18 may differ as their spacing relative to the opening 7.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
  • Adornments (AREA)
  • Jigs For Machine Tools (AREA)

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un système de serrage radial pour un composant horloger et plus, particulièrement, un tel système pour solidariser ledit composant à un élément de support comme, par exemple, un axe pivotant.The invention relates to a radial clamping system for a watch component and more, particularly, such a system for securing said component to a support member such as, for example, a pivot axis.

Arrière plan de l'inventionBackground of the invention

Il est connu de solidariser des mobiles horlogers en chassant leur trou central traversant sur un axe pivotant entre un pont et la platine. Cette configuration est très répandue avec des matériaux métalliques, cependant, elle n'est pas applicable pour des matériaux cassants dont la zone de déformation plastique est sensiblement inexistante.It is known to secure watchmakers by driving their central hole through a pivoting axis between a bridge and the plate. This configuration is widespread with metallic materials, however, it is not applicable for brittle materials whose plastic deformation zone is substantially non-existent.

Le document CH 282 774 divulgue une aiguille dont la tête est formée par un corps cylindrique en métal dont l'épaisseur est supérieure au reste de l'aiguille en formant un canon.The document CH 282 774 discloses a needle whose head is formed by a cylindrical body of metal whose thickness is greater than the rest of the needle forming a barrel.

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 un composant horloger dont le système de serrage radial utilise uniquement la zone de déformation élastique du matériau pour se solidariser avec son élément de support.The object of the present invention is to overcome all or part of the disadvantages mentioned above by providing a clock component whose radial clamping system uses only the elastic deformation zone of the material to become integral with its support member.

A cet effet, l'invention se rapporte à un composant horloger selon la revendication 1.For this purpose, the invention relates to a watch component according to claim 1.

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

  • ladite couronne est crénelée permettant de former plusieurs lames indépendantes autour de ladite ouverture ;
  • la section intérieure de la couronne est tronconique afin d'augmenter localement ladite contrainte radiale ;
  • ladite section est plus faible au niveau de l'extrémité libre de la couronne afin d'exercer une contrainte radiale maximale au niveau de l'extrémité libre de chaque lame contre ledit élément de support ;
  • la section intérieure de la collerette est tronconique afin de rendre progressif ledit verrouillage ;
  • le composant horloger est de forme généralement discoïdale et comporte une denture circonférentielle afin de former un mobile.
According to other advantageous features of the invention:
  • said ring is crenellated to form a plurality of independent blades around said opening;
  • the inner section of the crown is frustoconical to locally increase said radial stress;
  • said section is lower at the free end of the ring to provide maximum radial stress at the free end of each blade against said support member;
  • the inner section of the collar is frustoconical in order to make said locking progressively;
  • the watch component is of generally discoidal shape and has a circumferential toothing to form a mobile.

L'invention se rapporte également à une pièce d'horlogerie caractérisée en ce qu'elle comporte au moins un composant horloger selon l'une des variantes précédentes.The invention also relates to a timepiece characterized in that it comprises at least one watch component according to one of the preceding variants.

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 en perspective d'un composant horloger monté sur un élément de support selon l'invention ;
  • la figure 2 est une section d'un composant horloger selon l'invention ;
  • la figure 3 est une représentation agrandie d'une partie de la figure 2;
  • la figure 4 est une représentation vue de dessus d'un composant horloger selon l'invention.
Other particularities and advantages will emerge clearly from the description which is given hereinafter, by way of indication and in no way limiting, with reference to the appended drawings, in which:
  • the figure 1 is a perspective representation of a watch component mounted on a support member according to the invention;
  • the figure 2 is a section of a watch component according to the invention;
  • the figure 3 is an enlarged representation of some of the figure 2 ;
  • the figure 4 is a top view of a watch component according to the invention.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

Comme illustré aux figures 1 à 4, l'invention se rapporte à un composant horloger généralement annoté 1 destiné à coopérer avec un élément de support 3. Dans l'exemple utilisé ci-dessous, le composant horloger 1 est un mobile sensiblement discoïdal et l'élément de support 3, un axe cylindrique à section circulaire, cependant, ils ne sauraient s'y limiter.As illustrated in Figures 1 to 4 the invention relates to a generally annotated watch component 1 intended to cooperate with a support element 3. In the example used below, the watch component 1 is a substantially discoidal mobile and the support element 3, a cylindrical axis with circular section, however, they can not be limited.

Dans l'exemple visible à la figure 1, on peut voir un composant horloger 1 monté sur un élément de support 3. Préférentiellement, l'élément de support 3 comporte un axe 2 venu de matière avec un pignon 4. Le composant horloger 1 comporte un moyeu 5 comportant une ouverture 7, quatre bras 9 et une serge dentée 11. Avantageusement selon l'invention, le composant horloger 1 est monté sur l'élément de support 3 au moyen d'un système de serrage 13 situé autour de l'ouverture 7 traversant ledit composant.In the example visible at figure 1 a watch component 1 mounted on a support element 3 can be seen. Preferably, the support element 3 comprises an axis 2 formed integrally with a pinion 4. The watch component 1 comprises a hub 5 comprising an opening 7, four arm 9 and a toothed serge 11. Advantageously according to the invention, the watch component 1 is mounted on the support member 3 by means of a clamping system 13 located around the opening 7 passing through said component.

Le système de serrage 13 est destiné à exercer une contrainte radiale sur l'axe 2 afin de solidariser le composant horloger 1 avec l'élément de support 3. Le système de serrage 13 est une alternative au chassage qui n'est pas toujours possible pour des matériaux comme le carbure de silicium, la silicium cristallisé, la silice cristallisée ou encore l'alumine cristallisée.The clamping system 13 is intended to exert a radial stress on the axis 2 to secure the watch component 1 with the support member 3. The clamping system 13 is an alternative to driving that is not always possible for materials such as silicon carbide, crystallized silicon, crystallized silica or crystallized alumina.

Le système de serrage 13 comporte préférentiellement un dispositif de pincement radial 15 et un dispositif de verrouillage 17. Le dispositif de pincement 15 comporte principalement une couronne 6 et un évidement 8. La couronne 6 est destinée à pincer la surface externe de l'axe 2. Elle est préférentiellement crénelée et comporte plusieurs lames 12 dont la section intérieure 14 forme le bord de l'ouverture 7 afin de mieux gérer localement le débattement de la couronne 6. Ainsi, avantageusement selon l'invention, chaque lame 12 est indépendante et se déplace élastiquement suivant la contrainte propre qui lui est soumise.The clamping system 13 preferably comprises a radial clamping device 15 and a locking device 17. The clamping device 15 mainly comprises a ring 6 and a recess 8. The ring 6 is intended to clamp the outer surface of the axis 2 It is preferably crenellated and comprises several blades 12 whose section inner 14 forms the edge of the opening 7 to better locally manage the movement of the crown 6. Thus, advantageously according to the invention, each blade 12 is independent and moves elastically according to the own stress that is subject to it.

Comme visible à la figure 3, la section intérieure 14 est tronconique selon un angle α afin d'augmenter localement la contrainte de pincement. Dans l'exemple illustré aux figures 1 à 4, la section supérieure de l'ouverture 7 est ainsi plus petite que la section inférieure. Selon l'invention, l'angle α peut être compris entre sensiblement 0 et 5 degrés. On comprend donc que la contrainte de pincement de la couronne 6 du dispositif de pincement 15 sera maximale au niveau de son extrémité libre, c'est-à-dire à l'extrémité des lames 12.As visible at figure 3 , the inner section 14 is frustoconical at an angle α in order to locally increase the pinch stress. In the example shown in Figures 1 to 4 , the upper section of the opening 7 is thus smaller than the lower section. According to the invention, the angle α may be between substantially 0 and 5 degrees. It is therefore understood that the clamping stress of the ring 6 of the clamping device 15 will be maximum at its free end, that is to say at the end of the blades 12.

L'évidement 8 est destiné à autoriser un débattement de la couronne 6. Selon l'invention, l'évidement 8 est préférentiellement borgne et communique entre chaque lame 12 avec l'ouverture 7. Chaque lame 12 peut ainsi louvoyer de manière indépendante entre l'évidement 8 et l'ouverture 7. Préférentiellement selon l'invention, l'évidement 8 est également destiné à coopérer avec le dispositif de verrouillage 17.The recess 8 is intended to allow a clearance of the crown 6. According to the invention, the recess 8 is preferably blind and communicates between each blade 12 with the opening 7. Each blade 12 can thus glide independently between the 8 and the opening 7. Preferably according to the invention, the recess 8 is also intended to cooperate with the locking device 17.

Selon l'invention, en fonction de l'application du composant horloger, l'évidement 8 peut comporter une profondeur comprise entre 5 et 85 % de l'épaisseur du composant horloger.According to the invention, depending on the application of the watch component, the recess 8 may have a depth of between 5 and 85% of the thickness of the watch component.

Le dispositif de verrouillage 17 est destiné à maintenir une contrainte minimale du système de serrage 13 contre l'axe 2 en bornant le louvoiement des lames 12 lorsque le positionnement global est jugé satisfaisant. Ainsi, le dispositif de verrouillage 17 comporte une clé de verrouillage 10 sensiblement discoïdale comprenant un trou 16 et sur la face inférieure une collerette 18.The locking device 17 is intended to maintain a minimum stress of the clamping system 13 against the axis 2 by limiting the sway of the blades 12 when the overall positioning is considered satisfactory. Thus, the locking device 17 comprises a substantially discoidal locking key 10 comprising a hole 16 and on the lower face a collar 18.

Préférentiellement, le trou 16 est traversant et de section intérieure de plus grande taille que le diamètre extérieur de l'axe 2 afin de pouvoir y coulisser sans frottement gras. La collerette 18 de forme générale annulaire comporte une section intérieure 19 sensiblement tronconique afin de rendre progressif le verrouillage du positionnement des lames 12.Preferably, the hole 16 is through and of larger internal section than the outer diameter of the axis 2 in order to slide without fat friction. The collar 18 of general annular shape has a substantially frustoconical inner section 19 in order to progressively lock the positioning of the blades 12.

Par conséquent, à l'aide de la figure 3, on comprend que la clé de verrouillage 10 est coulissée contre l'axe 2 au travers de son trou 16 pour que sa collerette 18 soit reçue dans l'évidement 8. La collerette 18, une fois insérée, empêche ainsi le déplacement des lames 12 vers l'évidement 8 par butée de sa section intérieure 19 en verrouillant leur positionnement.Therefore, using the figure 3 it is understood that the locking key 10 is slid against the axis 2 through its hole 16 so that its flange 18 is received in the recess 8. The flange 18, once inserted, thus prevents the displacement of the blades 12 towards the recess 8 by abutment of its inner section 19 by locking their positioning.

Préférentiellement, le composant horloger 1 est réalisé en matériau micro-usinable afin de pourvoir obtenir une précision inférieure au micron. De tels matériaux peuvent être, par exemple, mais non exclusivement du carbure de silicium, du silicium cristallisé, de l'alumine cristallisé ou de la silice cristallisée. En effet, de tels matériaux peuvent être gravés selon la précision requise notamment au moyen d'un procédé du type gravage ionique réactif profond (DRIE). De plus, de manière préférée, la clé de verrouillage 10 est formé d'un matériau ductile comme, par exemple, un métal.Preferably, the watch component 1 is made of micro-machinable material so as to obtain a precision less than one micron. Such materials may be, for example, but not exclusively silicon carbide, crystallized silicon, crystallized alumina or crystalline silica. Indeed, such materials can be etched according to the required accuracy, in particular by means of a process of the deep reactive ion etching (DRIE) type. In addition, preferably, the locking key 10 is formed of a ductile material such as, for example, a metal.

Bien entendu, la présente invention qui est définie par les revendications annexées, 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, suivant les applications prévues et/ou le matériau utilisé, les dimensions de l'évidement 8 et de la collerette 18 peuvent différer tout comme leur espacement respectif par rapport à l'ouverture 7.Of course, the present invention which is defined by the appended claims, is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art. In particular, according to the intended applications and / or the material used, the dimensions of the recess 8 and the flange 18 may differ as their spacing relative to the opening 7.

Claims (7)

  1. Timepiece component (1) that has an aperture (7) for receiving a support element (3) and includes a clamping system (13) for exerting radial force to secure said timepiece component to said support element, the clamping system (13) including a radial clamping device (15) that includes a crown (6) for exerting said radial force and a concentric, blind recess (8), spaced apart from said aperture, for allowing said crown to travel, characterised in that the clamping system (13) also has a locking device (17) that includes a locking key (10), provided with a collar (18) for cooperating with said blind recess to limit the travel of the free end of the crown (6).
  2. Timepiece component (1) according to claim 1, characterized in that said crown is notched to form several independent strips (12) around said aperture.
  3. Timepiece component (1) according to claim 2, characterized in that the inner section (14) of the crown (6) is truncated to increase said radial force locally.
  4. Timepiece component (1) according to claim 3, characterized in that said section (14) is smaller at the free end of the crown (6) to exert a maximum amount of radial force against said support element at the free end of each strip (12).
  5. Timepiece component (1) according to any of the preceding claims, characterized in that inner section (19) of the collar (18) is truncated so that said locking is achieved progressively.
  6. Timepiece component (1) according to any of the preceding claims, characterized in that it is of generally discoid shape and has a circumferential toothing to form a wheel set.
  7. Timepiece characterized in that it includes at least one timepiece component (1) according to any of the preceding claims.
EP09155376A 2009-03-17 2009-03-17 Radial gripping system for a timepiece component Active EP2230572B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP09155376A EP2230572B1 (en) 2009-03-17 2009-03-17 Radial gripping system for a timepiece component
TW099105975A TWI479286B (en) 2009-03-17 2010-03-02 Radial clamping system for a timepiece component
KR1020100022016A KR20100105405A (en) 2009-03-17 2010-03-12 Radial clamping system for a timepiece component
RU2010109850/28A RU2525321C2 (en) 2009-03-17 2010-03-16 Apparatus for radial clamping of components in clocks
US12/725,682 US8277117B2 (en) 2009-03-17 2010-03-17 Radial clamping system for a timepiece component
JP2010061430A JP5189612B2 (en) 2009-03-17 2010-03-17 Radial clamping system for watch components
CN2010101364666A CN101840196B (en) 2009-03-17 2010-03-17 Timepiece component and timepiece incorporating same
HK10110804.3A HK1144212A1 (en) 2009-03-17 2010-11-19 Timepiece component and timepiece including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09155376A EP2230572B1 (en) 2009-03-17 2009-03-17 Radial gripping system for a timepiece component

Publications (2)

Publication Number Publication Date
EP2230572A1 EP2230572A1 (en) 2010-09-22
EP2230572B1 true EP2230572B1 (en) 2012-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09155376A Active EP2230572B1 (en) 2009-03-17 2009-03-17 Radial gripping system for a timepiece component

Country Status (8)

Country Link
US (1) US8277117B2 (en)
EP (1) EP2230572B1 (en)
JP (1) JP5189612B2 (en)
KR (1) KR20100105405A (en)
CN (1) CN101840196B (en)
HK (1) HK1144212A1 (en)
RU (1) RU2525321C2 (en)
TW (1) TWI479286B (en)

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ATE469377T1 (en) 2006-11-09 2010-06-15 Eta Sa Mft Horlogere Suisse MOUNTING ELEMENT COMPRISING EXTENSIBLE STRUCTURES IN THE FORM OF SUPPOSED PLACES, AND CLOCK EQUIPPED WITH THIS ELEMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11675312B2 (en) 2016-11-23 2023-06-13 Eta Sa Manufacture Horlogere Suisse Rotating resonator with flexure bearing maintained by a detached lever escapement

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HK1144212A1 (en) 2011-02-02
EP2230572A1 (en) 2010-09-22
US8277117B2 (en) 2012-10-02
JP2010217185A (en) 2010-09-30
RU2010109850A (en) 2011-09-27
KR20100105405A (en) 2010-09-29
RU2525321C2 (en) 2014-08-10
TWI479286B (en) 2015-04-01
CN101840196A (en) 2010-09-22
TW201109869A (en) 2011-03-16
CN101840196B (en) 2012-05-09
US20100238772A1 (en) 2010-09-23
JP5189612B2 (en) 2013-04-24

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