EP1826634A1 - Micromechanical element provided with form-locking opening for axle assembly - Google Patents

Micromechanical element provided with form-locking opening for axle assembly Download PDF

Info

Publication number
EP1826634A1
EP1826634A1 EP20060004074 EP06004074A EP1826634A1 EP 1826634 A1 EP1826634 A1 EP 1826634A1 EP 20060004074 EP20060004074 EP 20060004074 EP 06004074 A EP06004074 A EP 06004074A EP 1826634 A1 EP1826634 A1 EP 1826634A1
Authority
EP
European Patent Office
Prior art keywords
opening
micro
characterized
mechanical part
part 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.)
Withdrawn
Application number
EP20060004074
Other languages
German (de)
French (fr)
Inventor
Frédéric Vaucher
Raymond Gabus
Marco Verardo
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 EP20060004074 priority Critical patent/EP1826634A1/en
Publication of EP1826634A1 publication Critical patent/EP1826634A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00Escapements
    • G04B15/14Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00Gearwork
    • G04B13/02Wheels; Pinions; Spindles; Pivots
    • G04B13/021Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/022Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft with parts made of hard material, e.g. silicon, diamond, sapphire, quartz and the like
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49462Gear making
    • Y10T29/49465Gear mounting
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/46Rod end to transverse side of member
    • Y10T403/4634Rod and side deformingly interlocked

Abstract

The piece is made from a plate (1) made of a brittle material, such as glass, quartz or silicon and has at least one opening (2,4,6) for driving an axis (3). , 5). This opening alternately comprises zones (8) of stiffening and positioning and zones (10) with elastic deformation. Application to the fixation of an axis on mobiles of a watch movement.

Description

    Technical area
  • The present invention relates to a micro-mechanical part comprising a shaped opening intended to facilitate assembly on an axis for a moving part, or on a stud for a fixed part, and to limit or eliminate the risk of breaking the part during the driving on the axis or the stud, especially when said part is made of a brittle material.
  • Technological background
  • In the field of micro-mechanics, which will subsequently be more particularly illustrated by the watchmaking field, the driving technique is very widely used, for example for securing a wheel on a shaft. When material constituting the part has a plastic domain, which is the case of metals and alloys, it is known to calculate the tolerances necessary for the shaft and the bore so as to have a tight fit without risk of breaking the part, or of to deform it. When the material does not have, or very little, plastic field, which is the case of glass, quartz or silicon, there is a great risk of breaking the workpiece during assembly.
  • However, these materials are increasingly used in watchmaking due in particular to their insensitivity to magnetic fields, their very low coefficient of thermal expansion, and their density much lower than that of metals or alloys. In addition, modern machining technologies enable complex shapes to be produced with great precision.
  • If a greasy adjustment is made to avoid stresses in the brittle material, then there is a risk of disengagement or non-driving of a movable member by the shaft. To overcome this drawback, it is possible to use the bonding technique long used to fix a hairspring on a ferrule, as described, for example, in the patent. FR 1 447 142 . The patent US 3,906,714 describes an embodiment in which the point of glue makes it possible both to fix the hairspring to a ferrule ring and said ring to the balance shaft.
  • The use of an adhesive, however, has the disadvantage of requiring additional machining steps to provide housing for the glue, and additional tasks at the time of assembly. In addition aging phenomena can cause a certain game over time.
  • Summary of the invention
  • The present invention therefore aims to overcome the disadvantages of the aforementioned prior art by providing a micromechanical part, in particular watchmaker, made of a brittle material which can be assembled by driving on an axis or a stud without risk of rupture.
  • For this purpose the invention relates to a micro-mechanical part made from a plate of a brittle material having an opening for driving an axis or a stud. By "brittle" material is meant a material having no plastic deformation domain, such as glass, quartz or silicon.
  • The invention is characterized in that the opening is a "shape opening", that is to say an opening that does not have a perfectly circular contour, said opening alternately comprising zones of stiffening and positioning and zones with elastic deformation ensuring the tightening of the axis. The zones with elastic deformation consist of plate portions having on both sides a recess joining the opening and the end of which penetrates into said opening. These plate portions may have the shape of a tongue coming to support tangentially on the axis during the driving.
  • According to another aspect of the invention, when the micro-mechanical part is a mobile, for example a cogwheel of a watch movement, the opening and the axis may furthermore have a contour providing an anti-rotation effect. , for example a contour of oblong or triangular shape.
  • Brief description of the drawings
  • Other features and advantages of the present invention will appear in the following description of various embodiments, given by way of illustration and without limitation with reference to the accompanying drawings in which:
    • Figure 1 is a perspective representation of a first embodiment of an assembly according to the invention;
    • Figure 2 is a top view of the first embodiment applied to an escape wheel;
    • FIG. 3 is a view from above, of a second embodiment applied to a star, and
    • Figure 4 is a top view of a third embodiment applied to a toothed wheel.
    Detailed description of the invention
  • Reference is made to FIGS. 1 and 2 to describe a first embodiment. FIG. 1 is a perspective view of a plate portion 1 to be secured to a support block 11 by means of a cylindrical stud 3 passing through an opening 2 formed in said plate 1.
  • The plate 1 consists of a brittle material, ie a material that does not have a plastic domain in normal temperatures of use, such as glass, quartz or silicon. The plate 1 may simply be a construction element, for example a plate, a bridge or a dial of a timepiece. It can also have a functional role by supporting a printed circuit or a MEMs to be secured to the block 11. To avoid breaking the workpiece during assembly by driving, the opening 2 is a shaped opening shown in plan view on a larger scale in Figure 2.
  • FIG. 2 shows, by way of example, a silicon escapement wheel mounted on a cylindrical shaft intended to be pivoted between two bearings. As can be seen, the contour of the opening 2 does not follow the circular contour of the shaft 5 by alternately presenting stiffening and positioning zones 8 and zones 10 with elastic deformation. To show that the stiffening zones 8 exert no clamping function on the shaft 5, the space 9 between said zones 8 and the shaft 5 has been greatly exaggerated. The areas with elastic deformation 10 are obtained by producing in the wafer 1 recesses 13, 15 opening into the central opening and delimiting in this example a tongue 12 whose end 14 extends beyond the theoretical contour of the shaft 5 and thus ensures a clamping function when the shaft 5 in place by driving.
  • Figure 3 corresponds to a second embodiment showing a timer star having in its center a shape of opening 4 providing an anti-rotation effect. Indeed, the end 7 of the shaft 5 is machined with a non-circular contour in the shape of a triangle with rounded corners. The shape opening 4 follows this contour, but having, as in the first embodiment, a succession of zones 8 for stiffening and positioning and zones 10 for elastic deformation.
  • FIG. 4 corresponds to a third embodiment in which the part, for example made of silicon, is a toothed wheel having at its center a shaped opening 6 having as before an "anti-rotation" function. In this example, the shape opening 7 is oblong.
  • It is of course possible to imagine any other non-circular contour to provide an anti-rotation effect, without departing from the scope of the present invention.
  • It is furthermore possible, in any of the embodiments which has just been described, to provide the ends 14 of the zones of elastic deformation 10 and the shaft 5 with roughnesses, for example grooves, to further reduce the risk. rotation of the workpiece on the tree.
  • The examples given in the foregoing description concern parts in continuous rotation, but it is quite obvious that the person skilled in the art can adapt the same principle to parts having reciprocating movement, such as a lever, a rocker, a ferrule , an anchor or an escape wheel.

Claims (10)

  1. Micro-mechanical part made from a plate (1) made of a brittle material comprising at least one opening intended to drive a shaft (3,5), characterized in that the opening is a shape opening ( 2, 4, 6) alternately comprising zones (8) of stiffening and positioning and zones (10) with elastic deformation ensuring the clamping of the axis (3, 5).
  2. Micro-mechanical part according to Claim 1, characterized in that the regions with elastic deformation (10) are constituted by portions (12) of plate (1) having on both sides a recess (13, 15) joining the opening and whose end (14) penetrates into said opening.
  3. Micro-mechanical part according to claim 2 characterized in that the portions (12) of plate (1) for elastic deformation have the shape of a tongue whose end (14) opens tangentially into the opening.
  4. Micro-mechanical part according to claim 1, characterized in that it is immobilized by driving on a support block (11) comprising a positioning stud (3).
  5. Micro-mechanical part according to claim 1, characterized in that it constitutes a rotating part, continuous or alternative, being fixed by driving on a shaft (5).
  6. Micro-mechanical part according to claim 5, characterized in that it constitutes a part of a watch movement chosen from an escape wheel, a star, a toothed wheel, a shell, a lever and an anchor.
  7. Micro-mechanical part according to claim 5, characterized in that the axis and the opening further have contours providing an anti-rotation effect.
  8. Micro-mechanical part according to claim 7, characterized in that the contour of the axis and the opening is of oblong or triangular shape.
  9. Micro-mechanical part according to claim 7, characterized in that the regions in contact with the axis and the opening are provided with roughness or grooves.
  10. micro-mechanical part according to any one of the preceding claims, characterized in that the brittle material is selected from glass, quartz and silicon.
EP20060004074 2006-02-28 2006-02-28 Micromechanical element provided with form-locking opening for axle assembly Withdrawn EP1826634A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060004074 EP1826634A1 (en) 2006-02-28 2006-02-28 Micromechanical element provided with form-locking opening for axle assembly

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
EP20060004074 EP1826634A1 (en) 2006-02-28 2006-02-28 Micromechanical element provided with form-locking opening for axle assembly
EP20070704705 EP1991916B1 (en) 2006-02-28 2007-02-23 Micromechanical piece with form opening for assembly on a spindle
JP2008556757A JP4894052B2 (en) 2006-02-28 2007-02-23 Micromachined parts with deformed openings for assembly and insertion into shafts
US12/280,836 US8206029B2 (en) 2006-02-28 2007-02-23 Micro-mechanical part with a shaped aperture for assembly on a shaft
PCT/EP2007/051775 WO2007099068A1 (en) 2006-02-28 2007-02-23 Micromechanical piece with form opening for assembly on a spindle
AT07704705T AT488788T (en) 2006-02-28 2007-02-23 Micromechanical component with form opening for assembling on a spindle
KR1020087021187A KR20080111446A (en) 2006-02-28 2007-02-23 Micromechanical piece with form opening for assembly on a spindle
CN 200780006940 CN101390022B (en) 2006-02-28 2007-02-23 Micromechanical parts with forming hole for mounting on the axle
DE200760010593 DE602007010593D1 (en) 2006-02-28 2007-02-23 Micromechanical component with form opening for assembling on a spindle
TW96106845A TWI434155B (en) 2006-02-28 2007-02-27 Micro-mechanical part with a shaped aperture for assembly on a shaft
HK09108235A HK1132050A1 (en) 2006-02-28 2009-09-08 Micromechanical piece with form opening for assembly on a spindle

Publications (1)

Publication Number Publication Date
EP1826634A1 true EP1826634A1 (en) 2007-08-29

Family

ID=37560754

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20060004074 Withdrawn EP1826634A1 (en) 2006-02-28 2006-02-28 Micromechanical element provided with form-locking opening for axle assembly
EP20070704705 Active EP1991916B1 (en) 2006-02-28 2007-02-23 Micromechanical piece with form opening for assembly on a spindle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20070704705 Active EP1991916B1 (en) 2006-02-28 2007-02-23 Micromechanical piece with form opening for assembly on a spindle

Country Status (10)

Country Link
US (1) US8206029B2 (en)
EP (2) EP1826634A1 (en)
JP (1) JP4894052B2 (en)
KR (1) KR20080111446A (en)
CN (1) CN101390022B (en)
AT (1) AT488788T (en)
DE (1) DE602007010593D1 (en)
HK (1) HK1132050A1 (en)
TW (1) TWI434155B (en)
WO (1) WO2007099068A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009162755A (en) * 2007-12-28 2009-07-23 Chopard Technologies Sa Driving and transmitting element for escapement, roller table and escapement equipped with them, and timepiece including them
EP2112565A1 (en) 2008-04-21 2009-10-28 Rolex Sa Micromechanical component with opening for attachment on an axe
EP2458454A1 (en) * 2010-11-25 2012-05-30 ETA SA Manufacture Horlogère Suisse Device for positioning a bridge on a bearing plate
WO2013045706A2 (en) 2011-09-29 2013-04-04 Rolex S.A. Integral assembly of a hairspring and a collet
EP2442190B1 (en) * 2010-10-15 2016-11-09 ETA SA Manufacture Horlogère Suisse Assembly of a part not comprising a plastic range
EP3327514A3 (en) * 2016-11-29 2018-06-06 Seiko Epson Corporation Mechanical component, timepiece, manufacturing method of mechanical component, and manufacturing method of timepiece
US10303121B2 (en) 2015-03-11 2019-05-28 Citizen Watch Co., Ltd. Power transmission body of timepiece and method of manufacturing power transmission body of timepiece

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AT460690T (en) * 2007-01-30 2010-03-15 Longines Montres Comp D Clock converting a drive mechanism of a device for indicating a size associated with time
JP5144291B2 (en) 2008-01-29 2013-02-13 セイコーインスツル株式会社 Clock movement body and clock
JP5080360B2 (en) * 2008-05-29 2012-11-21 セイコーインスツル株式会社 Beard ball, and hairspring structure, balance with hairspring, speed control escapement mechanism and mechanical timepiece having the same
EP2189854A1 (en) * 2008-11-21 2010-05-26 Nivarox-FAR S.A. Method for manufacturing a micromechanical part
JP2011053019A (en) * 2009-08-31 2011-03-17 Seiko Instruments Inc Slip gear structure and timepiece with the same
EP2317407A1 (en) * 2009-10-29 2011-05-04 Nivarox-FAR S.A. Fixation system of a part without force-fitting or bonding
CH702930A2 (en) * 2010-04-01 2011-10-14 Patek Philippe Sa Geneve Exhaust watch to protection against shocks.
EP2400351B1 (en) 2010-06-22 2013-09-25 Omega SA Single-piece mobile element for a clock piece
US9812684B2 (en) 2010-11-09 2017-11-07 GM Global Technology Operations LLC Using elastic averaging for alignment of battery stack, fuel cell stack, or other vehicle assembly
EP2469353A1 (en) * 2010-12-22 2012-06-27 ETA SA Manufacture Horlogère Suisse Assembly of a part not comprising a plastic range
CH704259A2 (en) 2010-12-22 2012-06-29 Nivarox Sa Metal/metal alloy based axially extending unit and plasticless component assembly e.g. steel/steel alloy based pivot pin and balance spring assembly, for timepiece, has deformed part to radially clamp wall for joining component and unit
CH704256A2 (en) * 2010-12-22 2012-06-29 Eta Sa Mft Horlogere Suisse Assembly for assembling e.g. pivoting staff in opening of mobile of timepiece, has intermediate part that is deformed to radially clamp component and to stress deformation units to join together assembly for piece
EP2469351A1 (en) 2010-12-22 2012-06-27 Nivarox-FAR S.A. Assembly of a part not comprising a plastic range
EP2482143A1 (en) * 2011-01-26 2012-08-01 Nivarox-FAR S.A. Assembly by ratchet locking
EP2595005A1 (en) 2011-11-16 2013-05-22 Omega SA Single-block mobile for a timepiece
US9618026B2 (en) 2012-08-06 2017-04-11 GM Global Technology Operations LLC Semi-circular alignment features of an elastic averaging alignment system
CN205157985U (en) 2013-03-22 2016-04-13 奥米加股份有限公司 Integral coaxial escapement lever fork
US9863454B2 (en) 2013-08-07 2018-01-09 GM Global Technology Operations LLC Alignment system for providing precise alignment and retention of components of a sealable compartment
US9458876B2 (en) 2013-08-28 2016-10-04 GM Global Technology Operations LLC Elastically deformable alignment fastener and system
US9463831B2 (en) 2013-09-09 2016-10-11 GM Global Technology Operations LLC Elastic tube alignment and fastening system for providing precise alignment and fastening of components
US20150093179A1 (en) * 2013-10-02 2015-04-02 GM Global Technology Operations LLC Elastic aperture alignment system for providing precise four-way alignment of components
US9457845B2 (en) 2013-10-02 2016-10-04 GM Global Technology Operations LLC Lobular elastic tube alignment and retention system for providing precise alignment of components
US9511802B2 (en) 2013-10-03 2016-12-06 GM Global Technology Operations LLC Elastically averaged alignment systems and methods
US9669774B2 (en) 2013-10-11 2017-06-06 GM Global Technology Operations LLC Reconfigurable vehicle interior assembly
US9481317B2 (en) 2013-11-15 2016-11-01 GM Global Technology Operations LLC Elastically deformable clip and method
US9428123B2 (en) 2013-12-12 2016-08-30 GM Global Technology Operations LLC Alignment and retention system for a flexible assembly
US9447806B2 (en) * 2013-12-12 2016-09-20 GM Global Technology Operations LLC Self-retaining alignment system for providing precise alignment and retention of components
US9599279B2 (en) 2013-12-19 2017-03-21 GM Global Technology Operations LLC Elastically deformable module installation assembly
US9446722B2 (en) 2013-12-19 2016-09-20 GM Global Technology Operations LLC Elastic averaging alignment member
US9541113B2 (en) 2014-01-09 2017-01-10 GM Global Technology Operations LLC Elastically averaged alignment systems and methods
US9428046B2 (en) 2014-04-02 2016-08-30 GM Global Technology Operations LLC Alignment and retention system for laterally slideably engageable mating components
US9657807B2 (en) 2014-04-23 2017-05-23 GM Global Technology Operations LLC System for elastically averaging assembly of components
US9429176B2 (en) 2014-06-30 2016-08-30 GM Global Technology Operations LLC Elastically averaged alignment systems and methods
CH709920A2 (en) * 2014-07-24 2016-01-29 Eta Sa Manufacture Horlogère Suisse Set of mobile watch braking.
US9753433B2 (en) * 2014-09-12 2017-09-05 Seiko Instruments Inc. Mechanical component, movement, and timepiece
EP3023844B1 (en) * 2014-11-20 2017-06-28 Nivarox-FAR S.A. Flexible ferrule
US9758110B2 (en) 2015-01-12 2017-09-12 GM Global Technology Operations LLC Coupling system
EP3106931A1 (en) * 2015-06-16 2016-12-21 Nivarox-FAR S.A. Part with uncoupled welding surface
EP3396470B1 (en) * 2017-04-24 2020-01-01 ETA SA Manufacture Horlogère Suisse Mechanical braking device for a clock wheel
JP2018189386A (en) 2017-04-28 2018-11-29 セイコーエプソン株式会社 Machine part and timepiece

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EP1445670A1 (en) * 2003-02-06 2004-08-11 ETA SA Manufacture Horlogère Suisse Balance-spring resonator spiral and its method of fabrication

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CH338146A (en) * 1957-09-06 1959-04-30 Ebauchesfabrik Eta Ag Slip clutch, particularly for watches
FR1447142A (en) 1964-02-06 1966-07-29 Lip Sa Apparatus for centering the flat layout and adhesive bonding of the spring-spirald'une shows on its ferrule
US3672150A (en) * 1969-12-25 1972-06-27 Citizen Watch Co Ltd Display dial assembly for timepiece
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EP1445670A1 (en) * 2003-02-06 2004-08-11 ETA SA Manufacture Horlogère Suisse Balance-spring resonator spiral and its method of fabrication

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009162755A (en) * 2007-12-28 2009-07-23 Chopard Technologies Sa Driving and transmitting element for escapement, roller table and escapement equipped with them, and timepiece including them
EP2112565A1 (en) 2008-04-21 2009-10-28 Rolex Sa Micromechanical component with opening for attachment on an axe
US7926355B2 (en) 2008-04-21 2011-04-19 Rolex S.A. Micromechanical part with an opening for fastening to a spindle
EP2442190B1 (en) * 2010-10-15 2016-11-09 ETA SA Manufacture Horlogère Suisse Assembly of a part not comprising a plastic range
EP2458454A1 (en) * 2010-11-25 2012-05-30 ETA SA Manufacture Horlogère Suisse Device for positioning a bridge on a bearing plate
US8619504B2 (en) 2010-11-25 2013-12-31 Eta Sa Manufacture Horlogère Suisse Device for positioning a bridge on a plate
WO2013045706A2 (en) 2011-09-29 2013-04-04 Rolex S.A. Integral assembly of a hairspring and a collet
US9411314B2 (en) 2011-09-29 2016-08-09 Rolex Sa Integral assembly of a hairspring and a collet
US10303121B2 (en) 2015-03-11 2019-05-28 Citizen Watch Co., Ltd. Power transmission body of timepiece and method of manufacturing power transmission body of timepiece
EP3327514A3 (en) * 2016-11-29 2018-06-06 Seiko Epson Corporation Mechanical component, timepiece, manufacturing method of mechanical component, and manufacturing method of timepiece

Also Published As

Publication number Publication date
TWI434155B (en) 2014-04-11
JP4894052B2 (en) 2012-03-07
WO2007099068A1 (en) 2007-09-07
JP2009528524A (en) 2009-08-06
CN101390022B (en) 2011-02-02
US20090154303A1 (en) 2009-06-18
HK1132050A1 (en) 2011-09-16
DE602007010593D1 (en) 2010-12-30
US8206029B2 (en) 2012-06-26
CN101390022A (en) 2009-03-18
TW200739291A (en) 2007-10-16
KR20080111446A (en) 2008-12-23
EP1991916B1 (en) 2010-11-17
EP1991916A1 (en) 2008-11-19
AT488788T (en) 2010-12-15

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