EP1705537A1 - Stoßdämpfende Lagerung für Uhren - Google Patents
Stoßdämpfende Lagerung für Uhren Download PDFInfo
- Publication number
- EP1705537A1 EP1705537A1 EP05405263A EP05405263A EP1705537A1 EP 1705537 A1 EP1705537 A1 EP 1705537A1 EP 05405263 A EP05405263 A EP 05405263A EP 05405263 A EP05405263 A EP 05405263A EP 1705537 A1 EP1705537 A1 EP 1705537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- arms
- shock
- connecting arms
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims description 32
- 230000035939 shock Effects 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 8
- 238000013519 translation Methods 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 3
- 238000003801 milling Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005323 electroforming Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/02—Shock-damping bearings
- G04B31/04—Shock-damping bearings with jewel hole and cap jewel
Definitions
- the present invention relates to a shock-absorbing bearing for a timepiece, comprising a bearing body, a pierced bearing stone, a seat for positioning this bearing stone in this bearing body, a counter-pivot, a locating position of this counter-pivot in this bearing body and a shock-absorbing spring for holding said counter-pivot against said positioning seat, said shock-absorbing spring being connected to said bearing body by four connecting arms, parallel to said a plane containing the axis of pivoting of said bearing and forming, on each side of this plane, a suspension element comprising two of said connecting arms connected to each other by an arcuate branch centered on said axis of pivoting and whose radius is different from that of said pivot, these suspension elements being connected to each other by two diametral arms located on either side of a central support element.
- shock-absorbing bearings intended in particular for the balance shaft have been the subject of a great deal of research work which culminated between the beginning of the 1930s and the end of the 1950s. this area of which 250 in the aforementioned period.
- the solutions that are currently used give overall satisfaction, which probably explains why this subject is practically no longer subject to new developments.
- shock-absorbing spring One of the essential elements of such a bearing is the shock-absorbing spring. It should be kept in mind that the dimensions of such a spring are less than 2 mm and are generally around 1.5 mm. These dimensions pose design problems as well with regard to the elastic limits and the plastic deformation, in particular during its fixing, the maintenance of the spring in the event of shocks, the assembly of the spring, the assembly and the disassembly of the bearing.
- the object of the present invention is to overcome, at least in part, the aforementioned drawbacks.
- this invention relates to a shock absorbing bearing for a timepiece according to claim 1.
- the main advantage of the shock absorbing bearing according to the present invention comes from the fact that the attachment of the two diametral arms of the central support element to two of the four connecting arms to the bearing support, allows to form, share and other diametrical arms connecting the central support element to the two suspension elements, two elastic elements allowing an easier installation of the spring, by the significant increase in the range of elastic deformation, while the diametral arms attached on the one hand to the central support part and on the other hand to two connecting arms, constitutes a more rigid element passing through the center of pivoting. This greater rigidity improves the impact resistance.
- the bearing spring object of the present invention is therefore designed to offer a specialization of functions between its different parts
- the free ends of the connecting arms are terminated by hooking elements, the elements Each pair of link arms located opposite each other is rotated on the outer side of each pair of link arms.
- the two pairs of connecting arms of the suspension spring formed by the connecting arms located opposite one another of the two suspension elements, have a central symmetry with respect to the axis of pivoting of the bearing.
- This characteristic has the advantage of being able to fix the spring on the bearing support in one or other of the two possible positions, at 180 ° to each other around the pivot axis of the bearing, this which significantly facilitates its assembly operations.
- any pair of connecting arms of the suspension spring, formed by the connecting arms located opposite one another of the two suspension elements can be used indifferently to opening of the bearing or play the role of spring hinge on the support.
- this spring has no mounting direction on the bearing support, which significantly simplifies the assembly work.
- the damping spring is of constant thickness and is plane in the rest state. This feature means that any face of the spring can be put on or under. In combination with the central symmetry characteristic, the spring can be put into place in the bearing bracket without prior selection of a face to be oriented above or below or a side to be used for opening or hinge.
- the profile of the central support portion of the damping spring is chosen to serve as a gauge of the amount of oil in the bearing and for this purpose has at least two radial marks of different radii for determining respectively the maximum and minimum oil quantities, and the centering of this oil with respect to said pivot axis.
- the attachment elements of the two connecting arms which are not connected to the outer ends of the two diametral arms are longer than the attachment elements of the other two connecting arms.
- the bearing support comprises a diametrical passage which extends on either side of the seat of said counter pivot, to receive the connecting arms of the damping spring and is of symmetrical conformation with respect to any plane passing through said pivot axis.
- the bearing with its diametrical passage is designed to receive the central symmetric spring in this diametral passage in any of the two possible positions. No order must be observed for the installation of the damping spring. This symmetry also significantly simplifies the manufacture of the bearing support and requires no stud for the articulation of the spring, which pad is still, given its size, a fragile element and difficult to manufacture.
- the chamfers exert a force which brings the two connecting arms situated opposite each other closer to one another. the other.
- the bearing illustrated by FIGS. 1 and 2 comprises a bearing body 1 comprising a frustoconical cup-shaped seat 1a for the positioning of a kitten 2 in the a cylindrical portion from which is thrown a pierced stone 3 and having a seat 2a for a counter-pivot 4.
- a shock-absorbing spring 5 is fixed to the bearing body 1 to hold the kitten 2 and the counter-pivot 4 resiliently on their respective seats 1a, 2a.
- the bearing body 1 has the particularity of being entirely symmetrical with respect to all the planes containing the pivot axis X of the bearing.
- a diametrical milling 1b is formed on the upper part of this bearing body and two parallel milling 1c, perpendicular to the diametrical milling 1b are formed outside the bearing body 1, in its thickness, at a distance from its upper face. .
- These three millings 1b, 1c are intended for fixing the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the damping spring 5, the two arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 located opposite each other being parallel.
- the width of the diametrical milling 1b corresponds to that of each pair of parallel arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 located vis-à-vis one another.
- the two parallel milling operations 1c are intended to receive the respective hooking ends 5b 1 , 5b 2 , 5b 3 , 5b 4 facing outwards of each pair of parallel arms, of the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 , thus ensuring the attachment of the damping spring 5 to the bearing body 1.
- the connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 are parallel in pairs and the spacing between the two pairs of arms 5a 1 , 5a 4 , respectively 5a 2 , 5a 3 being equal, so that, for its attachment, the damping spring 5 can be disposed in the milling 1b in any of two symmetrical positions, located 180 ° from each other.
- the two connecting arms 5a 1 , 5a 2 , respectively 5a 3 , 5a 4 , situated in the extension of one another are connected to each other by two branches in arcs of circles 5c 1 , respectively 5c 2 , centered on the axis of rotation X and whose respective radii are greater than that of the pivoting pivot 4.
- These two branches in arcs of circles form with the connecting arms 5a 1 , 5a 2 , respectively 5a 3 , 5a 4 , two suspension elements on either side of a plane passing through the pivot axis X of the bearing and by the middle of the diametrical milling 1b.
- the damping spring 5 further comprises a central support element 5d connected to each of the two suspension elements 5a 1 , 5c 1 , 5a 2 , respectively 5a 3 , 5c 2 , 5a 4 , by two arms 5e aligned diametrically, but connected, in this example, at the junctions between the arm 5a 4 and the arcuate branch 5c 2 , respectively between the arm 5a 2 and the arcuate branch 5c 1 .
- This particular arrangement makes it possible to have two branches 5a 1 , 5c 1 , respectively 5a 3 , 5c 2 , having a substantially greater elasticity than the arms 5a 2 , 5a 4 and intended to facilitate the installation of the spring and especially to avoid the risk of plastic deformation of the arms during this manipulation.
- the arms 5a 2 , 5a 4 connected to the diametral arms 5e and the central support member 5d form a substantially more rigid assembly for supporting shocks.
- damping spring 5 in the undeformed state is flat, so that it has neither top nor bottom, and thus, that any of its faces can be put on or under for its fixation.
- This feature also facilitates its manufacture which can be obtained for example by the LIGA process, electroforming, stamping, chemical milling or wire.
- the support element 5d of the spring can advantageously serve as an oil dipstick, for measuring the amount of oil and the centering of the drop of oil between the pierced stone 3 and the counter pivot 4.
- the shape given to the central support element is chosen so as to enable the presence of oil, its centering and the quantity of oil to be observed by transparency through the pivoting pivot 4.
- the first condition consists in disengaging the central part of the counter pivot 4.
- this support element 5d close to a rectangle, but with its two narrow sides in the form of arcs of a circle centered on the pivot axis X of the bearing, according to FIG. choose the spacing between the two long sides of this kind of rectangle, corresponding to the minimum diameter of the drop of oil, while its two opposite sides in arcs of circles can define the maximum diameter of the drop of oil.
- a damping spring 15 comprises a central support member 15d whose central opening is formed by the alternation of eight arcs of concave convex circles, the four convex arcs being coaxial with the axis X rotation of the bearing and the same radii, while the four concave arches have the same radii, their centers being located on the same circle concentric with the pivot axis X of the bearing and spaced 90 ° from each other around the pivot axis X of the bearing.
- the two diametral arms 15e are connected to the central support element 15d by two arcs of opposite concave circles.
- the two other concave profile portions of the central support member 15d are delimited externally by two arcs of concentric circles respectively to these two other concave profile parts but smaller radii, which can also be used to measure the amount of oil.
- the attachment ends 15b 1 , 15b 2 , 15b 3 , 15b 4 , connecting arms 15a 1 , 15a 2 , 15a 3 , 15a 4 can be elongated with respect to those of Figure 2. It could also only extend the ends 15b 1 , 15b 3 of the most elastic link arm, since they are more likely to fall off in case of shocks than the other two.
- FIG. 4 shows yet another variant of the shape of the bearing element 25d of the spring 25 which comprises, on one side of the diametral arms 25e, a part in circular arc concentric with the pivot axis X of the bearing and on the other side of these diametrical arms 25e, two portions of the arc of a circle exceeding these diametrical arms 25e of the same angular value and whose ends are connected to one another by an arcuate segment of concave circle of radius substantially greater than that of the arcuate portion centered on the pivot axis X, or by a straight segment.
- the central support element 35d has an annular shape. Since such a form has the drawback of not being able to detect the presence or absence of oil if the edge of the meniscus formed by the drop of oil is in the width of the ring, the latter a radial cut 35f which allows to see the meniscus.
- chamfers are provided, in particular on both sides of the diametrical milling 1b of the bearing body 1. These chamfers can be used to transform a pressure exerted on the connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the damping spring in forces which tend to bring the two parallel arms 5a 1 , 5a 4 and 5a 2 , 5a 3 situated opposite one another, so that it is possible to set up the damping spring by a simple translation simultaneously exerting pressure on the four connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 .
- Clearances are formed in the upper face of the bearing body 1 in places where the parallel edges of the diametrical milling 1b open into the frustoconical seat 1a of the kitten 2. These clearances 1e are used to introduce tweezers or dowels to release the attachment ends 5b 1 , 5b 2 , 5b 3 , 5b 4 , connecting arms 5a 1 , 5a 2 , 5a 3 , 5a 4 of the bearing body 1. Note that it can be identified that a pair of parallel connecting arms 5a 1 , 5a 4 , or 5a 2 , 5a 3 situated opposite one another, the other pair being used as a hinge to release the pivoting pivot 4.
- the variant of the damping spring 45 illustrated in FIG. 6 differs from the other springs previously described essentially in that the diametral arms 45e are no longer connected to the junctions between two connecting arms 5a 2 , 5a 4 and the branches in arcs of circles 5c 1 , respectively 5c 2 , as in the case of Figure 2 for example, but these diametrical arms 45e are connected to the outer ends of the connecting arms 45a 2 , respectively 45a 4 , by a connecting segment 45f 1 , respectively 45f 2 .
- the diametral arms 45e are in fact connected to the respective attachment ends 45b 2 , 45b 4 of these link arms 45a 2 , 45a 4 .
- the elastic branches are more elongated since they each comprise all of the two suspension elements 45a 1 , 45c 1 , 45a 2 , respectively 45a 3 , 45c 2 , 45a 4 .
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Springs (AREA)
- Sliding-Contact Bearings (AREA)
- Testing Of Balance (AREA)
- Pivots And Pivotal Connections (AREA)
- Vibration Prevention Devices (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE05405263T DE05405263T1 (de) | 2005-03-23 | 2005-03-23 | Stoßdämpfende Lagerung für Uhren |
DE602005006731T DE602005006731D1 (de) | 2005-03-23 | 2005-03-23 | Stoßdämpfende Lagerung für Uhren |
EP05405263A EP1705537B1 (de) | 2005-03-23 | 2005-03-23 | Stoßdämpfende Lagerung für Uhren |
CN200610071784A CN100578394C (zh) | 2005-03-23 | 2006-03-22 | 用于时钟的吸震轴承 |
US11/387,423 US7234859B2 (en) | 2005-03-23 | 2006-03-23 | Shock-absorbing bearing for timepiece |
JP2006080569A JP4598701B2 (ja) | 2005-03-23 | 2006-03-23 | 時計用緩衝軸受 |
HK06112526A HK1092880A1 (en) | 2005-03-23 | 2006-11-14 | Shock-proof bearing for timepiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05405263A EP1705537B1 (de) | 2005-03-23 | 2005-03-23 | Stoßdämpfende Lagerung für Uhren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1705537A1 true EP1705537A1 (de) | 2006-09-27 |
EP1705537B1 EP1705537B1 (de) | 2008-05-14 |
Family
ID=35094614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05405263A Active EP1705537B1 (de) | 2005-03-23 | 2005-03-23 | Stoßdämpfende Lagerung für Uhren |
Country Status (6)
Country | Link |
---|---|
US (1) | US7234859B2 (de) |
EP (1) | EP1705537B1 (de) |
JP (1) | JP4598701B2 (de) |
CN (1) | CN100578394C (de) |
DE (2) | DE05405263T1 (de) |
HK (1) | HK1092880A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013088178A (ja) * | 2011-10-14 | 2013-05-13 | Seiko Instruments Inc | てんぷの耐振軸受機構、これを備えたてんぷ及びこれを備えた時計 |
EP3291026A1 (de) * | 2016-08-30 | 2018-03-07 | ETA SA Manufacture Horlogère Suisse | Stossdämpfer-gleitlager für eine uhr |
EP3916489A1 (de) | 2020-05-29 | 2021-12-01 | Rolex Sa | Dämpfungsfeder, lagerkörper und lager für uhr |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1696286B1 (de) * | 2005-02-23 | 2010-12-29 | ETA SA Manufacture Horlogère Suisse | Stoßdämpfende Uhrenlagerung |
EP1835050A1 (de) * | 2006-03-15 | 2007-09-19 | Doniar S.A. | Verfahren zur Herstellung einer LIGA-UV metallischen Mehrschichtstruktur, deren Schichten nebeneinanderliegend und nicht völlig überlagert sind. |
JP5455115B2 (ja) * | 2009-10-07 | 2014-03-26 | セイコーインスツル株式会社 | 時計用軸受、ムーブメントおよび携帯用時計 |
CN101853001B (zh) * | 2010-05-17 | 2011-08-17 | 上海关勒铭有限公司 | 防震座生产工艺 |
JP5657106B2 (ja) * | 2010-06-22 | 2015-01-21 | ザ・スウォッチ・グループ・リサーチ・アンド・ディベロップメント・リミテッド | 時計の衝撃吸収軸受 |
EP2469357B2 (de) * | 2010-12-21 | 2016-06-29 | The Swatch Group Research and Development Ltd. | Stoßdämpfer-Gleitlager für eine sich drehende Triebfeder einer Uhr |
CH705861A2 (fr) * | 2011-12-12 | 2013-06-14 | Swatch Group Res & Dev Ltd | Palier antichoc pour pièce d'horlogerie. |
EP2677371A1 (de) * | 2012-06-21 | 2013-12-25 | ETA SA Manufacture Horlogère Suisse | Nicht demontierbares stoßsicheres System für Uhr |
EP2677370A1 (de) * | 2012-06-21 | 2013-12-25 | ETA SA Manufacture Horlogère Suisse | Stoßsicheres System zur vereinfachten Montage für Uhr |
EP2765462B1 (de) * | 2013-02-12 | 2018-04-04 | ETA SA Manufacture Horlogère Suisse | Stoßfestes Minutenrad |
EP2781971B1 (de) * | 2013-03-19 | 2017-11-08 | Nivarox-FAR S.A. | Struktur für Uhrwerksmechanismus |
CN104133362B (zh) * | 2013-05-01 | 2021-05-18 | 劳力士有限公司 | 钟表振荡器的摆锤的减震体 |
EP2806314A1 (de) * | 2013-05-24 | 2014-11-26 | The Swatch Group Research and Development Ltd. | Stoßdämpfer mit Bajonett |
EP2816423A1 (de) * | 2013-06-21 | 2014-12-24 | ETA SA Manufacture Horlogère Suisse | Stoßsicheres System mit gesicherter Montage |
CN104154937A (zh) * | 2014-08-26 | 2014-11-19 | 昆山迈致治具科技有限公司 | 一种气缸动力型pct治具 |
CH711219A2 (fr) * | 2015-06-16 | 2016-12-30 | Montres Breguet Sa | Dispositif magnétique de pivotement d'un arbre dans un mouvement horloger. |
EP3220211B1 (de) * | 2016-03-14 | 2018-10-10 | ETA SA Manufacture Horlogère Suisse | Stosssicherungssystem mit rotationssperre |
CH712502A2 (fr) * | 2016-05-18 | 2017-11-30 | Montres Breguet Sa | Dispositif antichoc pour un mouvement horloger. |
EP3291025B1 (de) * | 2016-08-30 | 2020-08-19 | Montres Breguet S.A. | Stossdämpfer mit multileaf-blattfedern |
EP3579060B1 (de) * | 2018-06-05 | 2023-10-18 | The Swatch Group Research and Development Ltd | Thermoelektrische uhr |
EP3792702A1 (de) * | 2019-09-13 | 2021-03-17 | ETA SA Manufacture Horlogère Suisse | Lager für uhrwerk, insbesondere stossdämpfer, für eine achse einer sich drehenden triebfeder |
EP3839661B1 (de) * | 2019-12-18 | 2022-08-10 | ETA SA Manufacture Horlogère Suisse | Stossdämpfervorrichtung mit winkelverriegelung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH294058A (fr) * | 1949-12-17 | 1953-10-31 | Tech De L Ind Horlogere Centre | Palier amortisseur de chocs pour mobiles de pièces d'horlogerie. |
CH325895A (fr) * | 1955-06-25 | 1957-11-30 | Seitz & Co | Palier pare-chocs |
US3306028A (en) * | 1966-01-04 | 1967-02-28 | Citizen Watch Co Ltd | Shock-proof device for watches |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH201334A (fr) * | 1937-11-08 | 1938-11-30 | Fritz Marti | Dispositif de fixation élastique de palier. |
CH427657A (fr) * | 1961-11-29 | 1966-09-15 | Parechoc Sa | Palier amortisseur de chocs pour mobile d'horlogerie |
JPS42214Y1 (de) * | 1964-03-17 | 1967-01-09 | ||
CH493021A (fr) * | 1967-09-11 | 1970-03-13 | Portescap Le Porte | Palier amortisseur de chocs pour pivot d'horlogerie |
CH559384A (de) * | 1971-07-15 | 1975-02-28 | ||
CH615311B (fr) * | 1976-11-22 | Ebauches Bettlach Sa | Palier amortisseur de chocs pour mouvement d'horlogerie. |
-
2005
- 2005-03-23 EP EP05405263A patent/EP1705537B1/de active Active
- 2005-03-23 DE DE05405263T patent/DE05405263T1/de active Pending
- 2005-03-23 DE DE602005006731T patent/DE602005006731D1/de active Active
-
2006
- 2006-03-22 CN CN200610071784A patent/CN100578394C/zh active Active
- 2006-03-23 JP JP2006080569A patent/JP4598701B2/ja active Active
- 2006-03-23 US US11/387,423 patent/US7234859B2/en active Active
- 2006-11-14 HK HK06112526A patent/HK1092880A1/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH294058A (fr) * | 1949-12-17 | 1953-10-31 | Tech De L Ind Horlogere Centre | Palier amortisseur de chocs pour mobiles de pièces d'horlogerie. |
CH325895A (fr) * | 1955-06-25 | 1957-11-30 | Seitz & Co | Palier pare-chocs |
US3306028A (en) * | 1966-01-04 | 1967-02-28 | Citizen Watch Co Ltd | Shock-proof device for watches |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013088178A (ja) * | 2011-10-14 | 2013-05-13 | Seiko Instruments Inc | てんぷの耐振軸受機構、これを備えたてんぷ及びこれを備えた時計 |
EP3291026A1 (de) * | 2016-08-30 | 2018-03-07 | ETA SA Manufacture Horlogère Suisse | Stossdämpfer-gleitlager für eine uhr |
EP3916489A1 (de) | 2020-05-29 | 2021-12-01 | Rolex Sa | Dämpfungsfeder, lagerkörper und lager für uhr |
Also Published As
Publication number | Publication date |
---|---|
US20060215499A1 (en) | 2006-09-28 |
CN1837993A (zh) | 2006-09-27 |
EP1705537B1 (de) | 2008-05-14 |
JP2006267106A (ja) | 2006-10-05 |
HK1092880A1 (en) | 2007-02-16 |
DE602005006731D1 (de) | 2008-06-26 |
JP4598701B2 (ja) | 2010-12-15 |
DE05405263T1 (de) | 2007-05-03 |
US7234859B2 (en) | 2007-06-26 |
CN100578394C (zh) | 2010-01-06 |
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Legal Events
Date | Code | Title | Description |
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