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EP2871535B1 - Uhranker mit optimierten Hörnern - Google Patents

Uhranker mit optimierten Hörnern Download PDF

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Publication number
EP2871535B1
EP2871535B1 EP13191770.0A EP13191770A EP2871535B1 EP 2871535 B1 EP2871535 B1 EP 2871535B1 EP 13191770 A EP13191770 A EP 13191770A EP 2871535 B1 EP2871535 B1 EP 2871535B1
Authority
EP
European Patent Office
Prior art keywords
radius
pin
horn
lever
pallet lever
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
EP13191770.0A
Other languages
English (en)
French (fr)
Other versions
EP2871535A1 (de
Inventor
Andrés Cabezas Jurin
Arthur Queval
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
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP13191770.0A priority Critical patent/EP2871535B1/de
Priority to US14/514,549 priority patent/US9075395B2/en
Priority to JP2014222321A priority patent/JP5941119B2/ja
Priority to CN201420679902.8U priority patent/CN204270013U/zh
Priority to CN201410643378.3A priority patent/CN104635468B/zh
Publication of EP2871535A1 publication Critical patent/EP2871535A1/de
Priority to HK15110067.0A priority patent/HK1209499A1/xx
Application granted granted Critical
Publication of EP2871535B1 publication Critical patent/EP2871535B1/de
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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • 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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements

Definitions

  • the invention relates to an anchor for a clockwork escapement mechanism comprising a rocker equipped with an anchor of given radius and oscillating according to a given radius of gyration, said anchor comprising, on either side of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through an anchor pivot axis, and comprise each a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile according to a second cylindrical sector of second radius of curvature.
  • the invention also relates to a rocker equipped with a peg of ankle radius given and oscillating according to a given radius of gyration about a pendulum pivot axis
  • the invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
  • the invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
  • the invention also relates to a watch comprising at least one such mechanical clockwork movement.
  • the invention relates to the field of watch exhaust mechanisms.
  • the functions of the escapement must be preserved whatever the shocks suffered by the watch.
  • the exhaust must be robust and able to withstand axial and radial shocks in all positions of the watch. For that, mechanical elements, called safety of the exhaust, come to limit the running of rotating or oscillating elements, in order to avoid any critical position that could either disturb the march or stop the watch.
  • these securities are provided by at least the horns and the sting.
  • This system has proven its reliability and robustness, but requires however a distinct component, which increases the cost of production and the risk of non-quality.
  • Spreading the horns and the stinger on two separate levels requires sufficient sharing, which has a significant impact on the height of the movement, and therefore on the final thickness of the watch.
  • the document FR 206 876 in the name of MARCKWALD describes an anchor with two horns symmetrical with respect to a median plane each with a concave intrados profile and a convex extrados profile.
  • the document CH704246A2 in the name of NIVAROX-FAR SA describes a micromechanical component, including a balance, comprising a body forming a flywheel, metal alloy or silicon-based material. A one-piece peg with this body protrudes from it. In a variant a spiral spring is made in one piece with this body.
  • the document DE593553C in the name of BONNOUVRIER describes a timepiece component, such as a pendulum ellipse or the like, comprising a plurality of cylinders arranged parallel to each other in the manner of a lantern gear, together defining an interior volume filled with lubricating grease. .
  • the document GB831161A in the name of SMITH & SONS LTD describes a clockwork whose serge is overmolded on a shaft, an attachment pin for spiral spring being also immobilized by the overmoulding material.
  • a recess in the serge faces the ankle.
  • the invention proposes to improve the safety design, by combining the safety functions of the horns and the stinger of an anchor escapement, whether it is a Swiss lever escapement, English anchor, pegs, or the like.
  • the invention optimizes the design of the horns, so as to ensure the safety functions hitherto devolved to the sting, intended to prevent accidental movement of the anchor fork during the additional oscillation arc balance.
  • the anchor according to the invention is an anchor without sting.
  • the anchor according to the invention is on one level, thanks to a specific form of horns, called “crab tongs”, which ensure, all safety.
  • the invention makes it possible to simplify, not only the anchor, which is now possible on one level, which allows the use of all imaginable manufacturing techniques, but also the balance, since the small plate is no longer necessary because of the disappearance of the sting of the anchor.
  • the invention relates to an anchor for a clockwork escapement mechanism comprising a rocker arm equipped with a peg of ankle radius given and oscillating according to a given radius of gyration, said anchor comprising, on the one hand, and other of an opening, a first horn and a second horn for cooperation with such an ankle, wherein said first and second horns have a profile symmetrical to each other with respect to a median plane passing through a pivot axis anchor, and each comprise a concave intrados profile according to a first cylindrical sector bordering said opening and first radius of curvature, said intrados profile being connected to a convex extrados profile in a second cylindrical sector of second radius curvature, characterized in that said first radius of curvature is greater than or equal to the total of said radius of gyration and said ankle radius, and in that said second radius of curvature is less than or equal to the difference between said radius of gyration and said ankle radius and opposite said opening.
  • the invention also relates to an escapement mechanism comprising a rocker pivoting about a rocker pivot axis and equipped with an anchor of given radius according to a given radius of gyration, and such an anchor that includes said exhaust mechanism .
  • the invention also relates to a mechanical clockwork movement comprising at least one such escape mechanism.
  • the invention also relates to a watch comprising at least one such mechanical clockwork movement.
  • the invention relates to the field of watch exhaust mechanisms.
  • the invention improves safety design, combining the safety functions of the horns and the stinger of an anchor escapement.
  • the invention is more precisely described in the preferred and most common, but not limiting, case of the Swiss anchor.
  • the invention thus relates to an anchor 1, in particular a Swiss anchor, for a watchmaking escapement mechanism, which comprises a rocker 11 equipped with a pin 12 of given pin radius R0, this rocker 11 oscillating according to a radius given gyration RG.
  • the anchor 1 according to the invention is preferably designed for a given type of balance, as a function of these parameters of given ankle radius R0 and given radius of gyration RG.
  • the anchor 1 comprises, on either side of an opening 3, a first horn 2A and a second horn 2B for cooperation with such an anchor 12.
  • the dimensioning of the opening 3 depends on the cooperation with the pendulum 11, and also the lever arm L of the anchor head relative to an anchor pivot axis D.
  • the horns 2A, 2B each describe a circular path.
  • the first radius of curvature RC1 is equal to the total of the radius of gyration RG, the radius of ankle R0, and one horn step EC
  • the second radius of curvature RC2 is equal to the difference between on the one hand the radius of gyration RG and on the other hand the total of the radius of ankle R0 and this ecstasy of horn EC.
  • this horn freckle EC is less than or equal to 0.050 mm.
  • the intrados and extrados profiles 25 are thus arranged relative to each other so that a cylinder parallel to the anchor pivot axis D and radius equal to the radius of gyration RG is remote, with the horn fretting, the value of the radius of ankle R0, a profile resulting from the combination between, on the one hand, the extrados profile 25A, 25B, of one of the horns 2A, 2B, and on the other hand the lower surface profile 20B, 20A, on the other of the horns 2B, 2A, so that these lower profile 20 and extrados profile 25 are tangent to the trajectory 15 or 16 of a pin 12 of such a rocker 11 whose pivoting axis of balance D1 is located in the median plane P in a symmetrical rest position of the exhaust mechanism 10, visible on the figure 2 .
  • such a lower profile 20 prevents any overturning of the anchor 1 in the event of impact
  • such an extrados profile 25 prevents in turn any reversal of the anchor 1 in case of shock.
  • the figure 3 illustrates such an anchor 1, in a bearing position on a limit stop 13B of the escape mechanism 10, during a clockwise oscillation, the trajectory 15 of the pin 12 is shown in broken lines, and, in the same way, the figure 4 represents the same anchor 1, in a bearing position on a limit stop 13A of the mechanism 10 during a oscillation in the clockwise direction, the trajectory 16 of the pin 12 is shown in broken lines.
  • the anchor 1 comprises, at the ends of the extrados profiles 25A; 25B closest to the anchor pivot axis D, the end-of-travel zones 19A, 19B, which are arranged to constitute stop-stops for such an anchor 12.
  • the intrados 20 profile of each of the horns 2A, 2B is centered on the intrados profile of the opposite horn respectively 2B, 2A, at a center OB, OA, which is also the center of the profile of extrados 25 of the horn considered 2A, 2B.
  • the figure 6 illustrates a Swiss anchor 1 which comprises, around the horns 2A, 2B, an outer ring 17 of ankle stroke limitation, having a first inner limiting surface 17A facing the extrados profile 25A of the first horn 2A, and a second inner limiting surface 17B facing the extrados profile 25B of the second first horn 2B.
  • the gap between the outer ring 17 and the extrados profiles 17A, 17B is equal to twice the radius of ankle R0 plus a radial clearance J less than or equal to 0.100 mm.
  • the safety is further increased, especially during the occurrence of a shock when the ankle 12 leaves the distal end of one of the horns before joining the opposite horn.
  • the figure 7 illustrates a Swiss anchor 1, variant of that of the figure 6 , and which comprises, at each of the intrados profiles 20A, 20B, a notch 18A, 18B, which is dimensioned for the passage of a shaft 110 of such a rocker 11. These notches can also be made on other anchor variants such as those of Figures 2 to 5 .
  • the anchor 1 according to the invention is flat and devoid of dart.
  • the invention also relates to a rocker arm 11 equipped with an anchor 12 of given ankle radius R0 and oscillating according to a given radius of gyration RG about a rocker pivot axis D1.
  • the rocker 11 comprises a single plate carrying the pin 12. This rocker 11 is suitable for cooperating with an anchor 1 as described above.
  • the sole plate carrying the ankle 12 is constituted by the serge of the balance 11.
  • the invention also relates to an escapement mechanism 10 comprising a rocker arm 11 pivoting about a rocker pivot axis D1 and equipped with an anchor 12 of given radius R0 according to a given radius of gyration RG, and such an anchor 1 according to the invention.
  • the rocker 11 comprises a single plate carrying the peg 12. More particularly, the single plate carrying the peg 12 is constituted by the serge of the rocker 11.
  • the figure 9 shows a variant where the limiting abutments 13A, 13B are formed by protrusions of a bridge 111 of the exhaust mechanism, and the overall number of components is greatly reduced in this advantageous variant of the invention.
  • the horns 2 can advantageously, as visible on the figure 5 , have recesses 29 and / or chambers, to reduce the inertia and unbalance of the anchor 1.
  • the invention also relates to a mechanical clockwork movement 30 comprising at least one such escape mechanism 10.
  • the invention also concerns a timepiece 40, in particular a watch, comprising at least one such mechanical clockwork movement 30.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Vibration Dampers (AREA)
  • Transmission Devices (AREA)

Claims (14)

  1. Anker (1) für einen Uhren-Hemmungsmechanismus (10), umfassend eine Unruh (11), die mit einem Stift (12) mit gegebenem Stiftradius (R0) ausgestattet ist und gemäß einem gegebenen Drehbewegungsradius (RG) schwingt, wobei der Anker (1) beiderseits einer Öffnung (3) ein erstes Horn (2A) und ein zweites Horn (2B) für die Zusammenwirkung mit einem solchen Stift (12) aufweist, wobei das erste und das zweite Horn (2A; 2B) in Bezug auf eine durch eine Schwenkachse (D) des Ankers verlaufende Mittelebene (P) ein gegenseitig symmetrisches Profil haben und jeweils ein inneres konkaves Bogenflächenprofil (20) gemäß eines an die Öffnung (3) angrenzenden ersten zylindrischen Bereichs (21) mit einem ersten Krümmungsradius (RC1) aufweisen, wobei das innere Bogenflächenprofil (20) mit einem konvexen Bogenrückenprofil (25) gemäß eines zweiten zylindrischen Bereichs (26) mit einem zweiten Krümmungsradius (RC2) verbunden ist, dadurch gekennzeichnet, dass der erste Krümmungsradius (RC1) größer oder gleich der Summe aus dem Drehbewegungsradius (RG) und dem Stiftradius (R0) ist und dass der zweite Krümmungsradius (RC2) kleiner oder gleich der Differenz zwischen dem Drehbewegungsradius (RG) und dem Stiftradius (R0) ist und sich gegenüber der Öffnung (3) befindet.
  2. Anker (1) nach Anspruch 1, dadurch gekennzeichnet, dass der erste Krümmungsradius (RC1) gleich der Summe aus dem Drehbewegungsradius (RG), dem Stiftradius (R0) und einem Hornspiel (EC) ist und dass der zweite Krümmungsradius (RC2) gleich der Differenz einerseits zwischen dem Drehbewegungsradius (RG) und andererseits der Summe aus dem Stiftradius (R0) und dem Hornspiel (EC) ist.
  3. Anker (1) nach Anspruch 2, dadurch gekennzeichnet, dass das Hornspiel (EC) kleiner oder gleich 0,050 mm ist.
  4. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das innere Bogenflächenprofil (20) jedes der Hörner (2A; 2B) auf das innere Bogenflächenprofil des gegenüberliegenden Horns (2A; 2B) auf Höhe eines Mittelpunkts (OB; OA) zentriert ist, der außerdem jener des Bogenrückenprofils (25) des betrachteten Horns (2A; 2B) ist.
  5. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er um die Hörner (2A; 2B) einen Außenring (17) für die Begrenzung der Stiftbahn umfasst, der eine erste innere Begrenzungsoberfläche (17A), die dem Bogenrückenprofil (25A) des ersten Horns (2A) zugewandt ist, und eine zweite innere Begrenzungsoberfläche (17B), die dem Bogenrückenprofil (25B) des zweiten Horns (2B) zugewandt ist, aufweist.
  6. Anker (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Abstand zwischen dem Außenring (17) und den Bogenrückenprofilen (17A; 17B) gleich dem doppelten Stiftradius (R0), erhöht um ein radiales Spiel (J) kleiner oder gleich 0,100 mm, ist.
  7. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er auf Höhe jedes der inneren Bogenflächenprofile (20A; 20B) eine Einkerbung (18A; 18B) aufweist, die für den Durchgang einer Welle (19) einer Unruh (11) bemessen ist.
  8. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er an den Enden der Bogenrückenprofile (25A; 25B), die sich am nächsten bei der Anker-Schwenkachse (D) befinden, Endlagenbereiche (19A; 19B) aufweist, die angeordnet sind, Anschläge zum Anhalten eines Stifts (12) zu bilden.
  9. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er ein Schweizer Anker ist.
  10. Anker (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er sich auf einer einzigen Ebene befindet.
  11. Hemmungsmechanismus (10), umfassend eine Unruh (11), die mit einem Stift (12) mit gegebenem Stiftradius (R0), der gemäß eines gegebenen Drehbewegungsradius (RG) um eine Schwenkachse (D1) der Unruh schwingt, ausgestattet ist, dadurch gekennzeichnet, dass der Stift (12) mit einem Anker (1) nach einem der Ansprüche 1 bis 10, den der Hemmungsmechanismus (10) umfasst, zusammenwirkt.
  12. Hemmungsmechanismus (10) nach Anspruch 11, dadurch gekennzeichnet, dass die Unruh (11) eine Trägerplatte für den Stift (12) umfasst, die durch den Fußkreis der Unruh (11) gebildet ist.
  13. Mechanisches Uhrwerk (30), das mindestens einen Hemmungsmechanismus (10) nach Anspruch 11 oder 12 umfasst.
  14. Uhr (40), die mindestens ein mechanisches Uhrwerk (30) nach Anspruch 13 umfasst.
EP13191770.0A 2013-11-06 2013-11-06 Uhranker mit optimierten Hörnern Active EP2871535B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP13191770.0A EP2871535B1 (de) 2013-11-06 2013-11-06 Uhranker mit optimierten Hörnern
US14/514,549 US9075395B2 (en) 2013-11-06 2014-10-15 Timepiece pallet lever with optimised horns
JP2014222321A JP5941119B2 (ja) 2013-11-06 2014-10-31 最適化された角状部を有する時計用アンクルレバー
CN201420679902.8U CN204270013U (zh) 2013-11-06 2014-11-06 擒纵杆、摆轮、擒纵机构、机械钟表机芯和钟表
CN201410643378.3A CN104635468B (zh) 2013-11-06 2014-11-06 具有最优角部的钟表擒纵杆
HK15110067.0A HK1209499A1 (en) 2013-11-06 2015-10-14 Timepiece pallet lever with optimised horns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13191770.0A EP2871535B1 (de) 2013-11-06 2013-11-06 Uhranker mit optimierten Hörnern

Publications (2)

Publication Number Publication Date
EP2871535A1 EP2871535A1 (de) 2015-05-13
EP2871535B1 true EP2871535B1 (de) 2017-06-28

Family

ID=49517432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13191770.0A Active EP2871535B1 (de) 2013-11-06 2013-11-06 Uhranker mit optimierten Hörnern

Country Status (5)

Country Link
US (1) US9075395B2 (de)
EP (1) EP2871535B1 (de)
JP (1) JP5941119B2 (de)
CN (2) CN204270013U (de)
HK (1) HK1209499A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2871535B1 (de) * 2013-11-06 2017-06-28 ETA SA Manufacture Horlogère Suisse Uhranker mit optimierten Hörnern
EP2947522B1 (de) 2014-05-20 2017-05-03 Société anonyme de la Manufacture d'Horlogerie Audemars Piguet & Cie Uhranker für mechanischen Oszillator, und Mechanismus zur Zeitauslösung der Uhr
EP3557334A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Uhrhemmungsmechanismus mit ruheanker, und uhr, die mit einem solchen hemmungsmechanismus ausgestattet ist
WO2019219679A1 (fr) * 2018-05-16 2019-11-21 Dominique Renaud Sa Mécanisme d'échappement pour pièce d'horlogerie
US11740589B2 (en) * 2018-07-19 2023-08-29 Werner Janer Multi-cam, continuous-drive escapement mechanism

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Publication number Priority date Publication date Assignee Title
US194744A (en) * 1877-08-28 Improvement in watch-escapements
US179769A (en) * 1876-07-11 champod
FR206876A (de) * 1890-07-08 1890-10-30 Marc Kwald
US372003A (en) * 1887-10-25 Escapement for time-pieces
DE593653C (de) * 1934-03-02 Louis Bonnouvrier Hemmwerk mit Geraeuschdaempfung
US725037A (en) * 1902-09-03 1903-04-14 Edward Buysse Balance-escapement.
US1105062A (en) * 1912-06-25 1914-07-28 Joe Steiner Equalizing unlock and impulse action escapement.
CH286179A (fr) * 1950-06-08 1952-10-15 Luethi Arthur Levée.
GB831161A (en) * 1957-06-20 1960-03-23 Smith & Sons Ltd S Improvements in or relating to balance wheels for time pieces
US3225866A (en) * 1963-11-19 1965-12-28 Marianne K Bernett Lubrication system for fine mechanisms
FR2063101A1 (de) * 1969-09-15 1971-07-09 Lip Horlogerie
CH578754B5 (de) 1972-10-12 1976-08-13 Favre Marc & Co Sa
EP1580625A1 (de) * 2004-03-23 2005-09-28 Asulab S.A. Vorrichtung und Verfahren zur Fixierung einer Palette auf einem Hemmungsanker in einem Uhrwerk
CH699273B1 (fr) * 2006-06-30 2010-02-15 Patek Philippe Sa Ancre d'échappement.
EP1983388B1 (de) * 2007-04-18 2010-01-20 ETA SA Manufacture Horlogère Suisse Direktimpulshemmung für Uhren
CH702156B1 (fr) * 2009-11-13 2017-08-31 Nivarox Far Sa Résonateur balancier-spiral pour une pièce d'horlogerie.
EP2336832B1 (de) * 2009-12-21 2020-12-02 Rolex Sa Schweizer Ankerhemmung
EP2413202B1 (de) * 2010-07-30 2017-11-15 ETA SA Manufacture Horlogère Suisse Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk
CH704246B1 (fr) * 2010-12-21 2014-12-31 Nivarox Sa Pièce de micromécanique monobloc.
EP2871535B1 (de) * 2013-11-06 2017-06-28 ETA SA Manufacture Horlogère Suisse Uhranker mit optimierten Hörnern

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Title
None *

Also Published As

Publication number Publication date
CN104635468B (zh) 2017-10-27
US9075395B2 (en) 2015-07-07
HK1209499A1 (en) 2016-04-01
CN204270013U (zh) 2015-04-15
JP5941119B2 (ja) 2016-06-29
JP2015090366A (ja) 2015-05-11
EP2871535A1 (de) 2015-05-13
CN104635468A (zh) 2015-05-20
US20150124570A1 (en) 2015-05-07

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