EP2908189A2 - Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk - Google Patents

Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk Download PDF

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Publication number
EP2908189A2
EP2908189A2 EP14184155.1A EP14184155A EP2908189A2 EP 2908189 A2 EP2908189 A2 EP 2908189A2 EP 14184155 A EP14184155 A EP 14184155A EP 2908189 A2 EP2908189 A2 EP 2908189A2
Authority
EP
European Patent Office
Prior art keywords
oscillator
axis
plane
guide means
flexible blade
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Withdrawn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
EP14184155.1A
Other languages
English (en)
French (fr)
Other versions
EP2908189A3 (de
Inventor
Pascal Winkler
Davide Sarchi
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
Priority claimed from EP14155429.5A external-priority patent/EP2908186B1/de
Priority claimed from EP14155431.1A external-priority patent/EP2908187B1/de
Priority claimed from EP14155433.7A external-priority patent/EP2908188B1/de
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP14184155.1A priority Critical patent/EP2908189A3/de
Priority to EP14186911.5A priority patent/EP2995999B1/de
Priority to RU2016150515A priority patent/RU2680411C1/ru
Priority to JP2016566664A priority patent/JP6224854B2/ja
Priority to CN201580033896.6A priority patent/CN106537264B/zh
Priority to US15/308,508 priority patent/US9958832B2/en
Priority to EP15730171.4A priority patent/EP3191897B1/de
Priority to PCT/EP2015/063892 priority patent/WO2016037717A2/fr
Publication of EP2908189A2 publication Critical patent/EP2908189A2/de
Publication of EP2908189A3 publication Critical patent/EP2908189A3/de
Withdrawn legal-status Critical Current

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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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/04—Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction

Definitions

  • the invention relates to a watchmaking mechanism comprising a plate and, mounted movable, at least pivotally relative to said plate, an escape wheel which pivots about an exhaust axis and is arranged to receive a torque motor, via a gear train, and a first oscillator having a first rigid structure connected to said plate by first elastic return means.
  • the invention relates to a watch movement comprising such a regulating mechanism.
  • the invention relates to a timepiece comprising such a movement.
  • the invention relates to the field of the regulation of mechanical timepieces, in particular mechanical watches.
  • the Swiss lever escapement generally used has a fairly low efficiency (of the order of 35%).
  • the invention proposes to create mechanisms that have a performance greater than the efficiency of the Swiss lever escapement.
  • the invention consists of a system for synchronizing a wheel, particularly driven by a motor spring, with a resonator.
  • the invention relates to a timepiece control mechanism comprising a plate and, mounted mobile, at least pivotally relative to said plate, an escape wheel which pivots about an exhaust axis and is arranged for receiving a driving torque, by means of a gear train, and a first oscillator comprising a first rigid structure connected to said plate by first elastic return means, characterized in that said regulating mechanism also comprises at least one second oscillator having a second rigid structure which is connected to said first rigid structure by second elastic return means which are arranged to allow at least a pivotal movement of said second rigid structure with respect to said first rigid structure, and in that said second rigid structure structure comprises guiding means arranged to cooperate with complementary guiding means that e comprises said escape wheel, synchronizing said first oscillator and said second oscillator with said wheel.
  • the invention relates to a watch movement comprising such a regulating mechanism.
  • the invention relates to a timepiece comprising such a movement, characterized in that it is a watch.
  • the invention consists of a system for synchronizing a gear driven by a motor spring with a resonator.
  • the invention relates more particularly to the regulation of mechanical movements.
  • the principle of the invention is to equip a mechanical watch with a movement comprising at least two oscillators connected in series with each other, in particular stacked, synchronized with a gear by a mechanical cooperation between the last oscillator of the cascade and a component of the train, between guide means and complementary guide means, in particular a finger and a cam, or more particularly a finger and a grooved wheel.
  • the invention is illustrated, without limitation, with only two oscillators mounted in cascade.
  • This regulating mechanism 100 comprises a plate 1 and, mounted mobile, at least pivotally relative to this plate 1, an escape wheel 51 and a first oscillator 110.
  • the escapement wheel 51 pivots about an exhaust axis D and is arranged to receive, via a train, a driving torque.
  • this driving torque is provided by an energy storage means, such as a cylinder, of a movement 200 to which the regulating mechanism 100 is intended to be incorporated.
  • the first oscillator 110 comprises a first rigid structure 310, which is connected to the plate 1 by first elastic return means 210.
  • the regulator mechanism 100 further comprises at least one second oscillator 120.
  • This second oscillator 120 comprises a second rigid structure 320, which is connected to the first rigid structure 310 of the first oscillator 110 by second elastic return means 220 .
  • These second elastic return means 220 are arranged to allow at least a pivoting movement of the second rigid structure 320 with respect to the first rigid structure 310.
  • this second structure 320 comprises guide means 42, which are arranged to cooperate with complementary guiding means 52 that includes the escape wheel 51.
  • These guide means 42 and these complementary guide means 52 together form a means of transmission of motion, for synchronizing the first oscillator 110 and the second oscillator 120 with the wheelwork to which the escape wheel 51 belongs.
  • This means of transmitting motion can take different forms: groove-pin system, as illustrated in a non-limiting manner by the figures, crank-handle system, or other.
  • the invention is described here with two oscillators connected in series. Naturally, it is also applicable to a cascade of oscillators connected in series with each other.
  • the first oscillator 110 and the second oscillator 120 have equal eigenfrequencies.
  • the first oscillator 110 and the second oscillator 120 have between them an angular phase shift substantially constant and close to 90 °.
  • At least two resonators formed by the first oscillator 110 and the second oscillator 120, preferably of the same natural frequency, each having a degree of angular freedom, are stacked so that a particular point of the second resonator travels a path patato ⁇ de 53 closed around a fixed point, which is here the pivot 151 of the escape wheel 51, for the mechanisms illustrated in the figures.
  • the trajectory 53 is more generally an ellipse whose eccentricity depends on the geometry of the mechanism, in particular at the level of the connection between the guide means 42 and the complementary guide means 52.
  • the first oscillator 110 pivots around a first pivot axis O1, and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1
  • the second oscillator 120 pivots around of a second pivot axis 02 and oscillates in a plane parallel to the plate 1 about a second plane axis A2
  • the first plane axis A1 and the second plane axis A2 make the with each other an angle between 60 ° and 120 °.
  • this angle is between 80 ° and 100 °. In a particular embodiment, it is 90 °.
  • the most downstream oscillator here the second oscillator 120
  • the second oscillator 120 has, at a particular point, an interaction means, such as a pin, constituting the guide means 42 for cooperating with each other. with the escape wheel 51.
  • the oscillations of the two resonators, first oscillator 110 and second oscillator 120 are maintained by the escape wheel 51 which also has an interaction means, such as a cam or a groove, and in particular a radial groove constituting the complementary guide means 52.
  • the escape wheel 51 is subjected to a motor torque. Its speed is synchronized by the frequency of the two resonators.
  • the movement of each oscillator of the regulator mechanism 100 is preferably plane.
  • the mobility plans of the different oscillators constituting the regulator mechanism 100 can be confused, or parallel to each other.
  • the regulating mechanism 100 comprises first plane guide means, which are arranged to allow at least a pivoting movement of the first structure 310 with respect to a point of the plate 1, in a plane P parallel to that of the plate 1.
  • the regulating mechanism 100 comprises second planar guide means, which are arranged to allow at least a pivoting movement of the second structure 320 relative to the first structure 310 in the plane P or in a plane parallel to said plane P.
  • the second rigid structure 320 is pivotally mounted on the first rigid structure 310.
  • the figure 1 illustrates a first variant, in which two conventionally pivoted swivel balances, stacked one on the other, are synchronized with a gear through a groove-pin interaction.
  • the first oscillator 110 comprises a first balance spring-spiral assembly 11.
  • This first balance-spring balance 11 comprises a first balance 31, constituting the first rigid structure 310, and a first balance spring 21, which constitutes the first elastic return means 210 , and whose outer turn is fixed to the plate 1 at a first pin 61, and which pivots about a first pivot axis O1.
  • the first rocker 31 comprises a first pivot 41, eccentric with respect to the first pivot axis O1.
  • This first pivot 41 defines a second pivot axis 02 about which pivots a second balance-spiral assembly 12, which constitutes the second oscillator 120.
  • This second balance spring-spiral assembly 12 comprises a second balance 32, which constitutes the second rigid structure 320, and a second balance spring 22, which constitutes the second elastic return means 220, and whose outer turn is fixed to the first balance 31 at the a second stud 62. And this second rocker 32 constitutes the second structure 320 comprising the guide means 42.
  • the figure 2 illustrates a second variant, wherein two cross-beam rockers, cascading with each other, are synchronized with a gear through a groove-pin interaction.
  • a first beam constituted here and without limitation of two circular sectors end to end, is the first rigid structure 310.
  • a second beam constituted here and in a non-limiting manner of a circular sector, constitutes the second rigid structure 320. More particularly, this first rocker 310 and this second rocker 320 are coplanar.
  • the first elastic return means 210 comprise at least a first flexible blade 210A and a second flexible blade 210B, which are crossed with each other, and which together constitute the first guide means plan arranged to allow at least one pivoting movement of the first structure 310 relative to a portion 101 of the plate 1 in a plane P parallel to that of the plate 1.
  • This portion 101 of the plate 1 may be an insert, or a part of the plate 1.
  • the first flexible blade 210A is fixed to the portion 101 of the plate 1 at a point 211, and the first rocker 310 at a point 214, and the second flexible blade 210B is attached to the portion 101 of the plate 1 at a point 212, and the first rocker 310 at a point 213.
  • first flexible blade 210A and the second flexible blade 210B are spaced from each other and arranged in two distinct planes parallel to the plate 1.
  • the second elastic return means 220 similarly comprise at least a third flexible blade 220A and a fourth flexible blade 220B crossed with each other and together constitute the second plane guide means arranged to allow at least one movement. pivoting the second structure 320 relative to the first structure 310 in a plane P parallel to that of the plate 1, and to provide an elastic return function.
  • the third flexible blade 220A is fixed to the first rocker 310 at a point 312, and the second rocker 320 at a point 313, and the fourth flexible blade 220B is fixed to the first rocker 310 at a point 311, and the second rocker 320 in one point 314.
  • the third flexible blade 220A and the fourth flexible blade 220B are spaced from each other and arranged in two distinct planes parallel to the plate 1.
  • the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second rocker 320 form a set monoblock of micro-machinable material such as silicon or the like.
  • the entire plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second rocker 320 form a monobloc assembly in micro-machinable material such as silicon or the like.
  • the guide means 42 and the complementary guide means 52 may take different forms.
  • the guide means 42 comprise a finger, which is carried by the second rigid structure 320, and which is arranged to cooperate with two opposite surfaces of a cam constituting the complementary guide means 52, and that comprises the escape wheel 51.
  • This cam is eccentric with respect to the exhaust axis D, and the trajectory 53 of the finger surrounds the exhaust axis D.
  • this cam is a groove with parallel faces that includes the escape wheel 51.
  • the portion 101 of the plate 1, the first flexible blade 210A and the second flexible blade 210B, the first rocker 310, the third flexible blade 220A and the fourth flexible blade 220B, the second balance 320 , and the finger 42 form a one-piece assembly of micro-machinable material such as silicon or the like.
  • the cam is a groove that is substantially radial, or strictly radial in the case of the figures, of the escape wheel 51.
  • the cam groove has a radial first inner portion with respect to the exhaust axis D, which is tangential to a second curve portion of constant concavity or decreasing away from the exhaust axis D so to compensate for isochronism defects.
  • the finger is a pin which is arranged to cooperate at minimum clearance with the groove, the motion transmission means thus being a groove-pin system.
  • the guide means 42 comprise a bearing finger of an inner race of a ball bearing.
  • the outer race of this bearing is advantageously mounted in a frictionally rubbing slider in a radial groove of the escape wheel. This rubbing slider makes it possible to promote a phase shift of 90 ° between the two resonators and thus to prevent the trajectory from collapsing on a line.
  • the first oscillator 110 pivots around a first pivot axis O1 and oscillates in a plane parallel to the plate 1 on either side of a first plane axis A1
  • the second oscillator 120 pivots around a second pivot axis 02 and oscillates in a plane parallel to the plate 1 about a second plane axis A2
  • the first axis Pivoting O1, the second pivot axis 02, and the finger together define an angle e between 60 ° and 120 °.
  • This angle e is preferably between 80 ° and 100 °.
  • the cooperation between the guide means 42 and the complementary guide means 52 is magnetic and / or electrostatic.
  • the guide means 42 comprise at least one magnet or a ferromagnetic track arranged to cooperate with at least one magnet or one magnet.
  • ferromagnetic track that comprises the complementary guide means 52.
  • the guide means 42 comprise at least one electrified or electrostatically conductive track, arranged to cooperate with at least one electrified or electrically conductive track that comprises the means of supplementary guidance 52.
  • the invention also relates to a watch movement 200 comprising such a regulating mechanism 100.
  • the invention also relates to a timepiece 300 comprising such a movement 200, and in particular this timepiece 300 is a watch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Electric Clocks (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electromechanical Clocks (AREA)
EP14184155.1A 2014-02-17 2014-09-09 Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk Withdrawn EP2908189A3 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP14184155.1A EP2908189A3 (de) 2014-02-17 2014-09-09 Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk
EP14186911.5A EP2995999B1 (de) 2014-09-09 2014-09-29 Synchronisierung der resonatoren eines uhrwerks
PCT/EP2015/063892 WO2016037717A2 (fr) 2014-09-09 2015-06-22 Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage
EP15730171.4A EP3191897B1 (de) 2014-09-09 2015-06-22 Mechanismus zur synchronisierung von zwei uhrenoszillatoren mit einen rädersatz
US15/308,508 US9958832B2 (en) 2014-09-09 2015-06-22 Method for synchronization of two timepiece oscillators with one gear train
RU2016150515A RU2680411C1 (ru) 2014-02-17 2015-06-22 Способ синхронизации двух осцилляторов часов с одной зубчатой передачей
JP2016566664A JP6224854B2 (ja) 2014-02-17 2015-06-22 ２つの計時器用発振器を１つの歯車列と同期する方法
CN201580033896.6A CN106537264B (zh) 2014-09-09 2015-06-22 钟表调节机构、钟表机芯以及钟表

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP14155433.7A EP2908188B1 (de) 2014-02-17 2014-02-17 Regulierung eines resonators einer uhr durch einwirkung auf die steifheit eines elastischen rückstellmittels
EP14155431.1A EP2908187B1 (de) 2014-02-17 2014-02-17 Regulierung eines Resonators einer Uhr durch Einwirkung auf die aktive Länge einer Spiralfeder
EP14155429.5A EP2908186B1 (de) 2014-02-17 2014-02-17 Frequenzregelung eines resonators einer uhr durch bewegung der spiralfeder
EP14184155.1A EP2908189A3 (de) 2014-02-17 2014-09-09 Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk

Publications (2)

Publication Number Publication Date
EP2908189A2 true EP2908189A2 (de) 2015-08-19
EP2908189A3 EP2908189A3 (de) 2016-06-01

Family

ID=53539324

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14184155.1A Withdrawn EP2908189A3 (de) 2014-02-17 2014-09-09 Mechanismus zur Synchronisation von zwei Oszillatoren eines Uhrwerks mit einem Räderwerk
EP14184631.1A Active EP2908190B1 (de) 2014-02-17 2014-09-12 Kombinierter Resonator mit minimaler Reibung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14184631.1A Active EP2908190B1 (de) 2014-02-17 2014-09-12 Kombinierter Resonator mit minimaler Reibung

Country Status (3)

Country Link
EP (2) EP2908189A3 (de)
JP (1) JP6224854B2 (de)
RU (1) RU2680411C1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037717A3 (fr) * 2014-09-09 2016-05-19 Eta Sa Manufacture Horlogère Suisse Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage
CH711559A1 (en) * 2015-09-23 2017-03-31 Audemars Piguet (Renaud Et Papi) Sa Regulating device for a timepiece, a watch sub-assembly and a clockwork movement.
EP3312682A1 (de) 2016-10-18 2018-04-25 ETA SA Manufacture Horlogère Suisse Qualitativ hochwertiger resonator für mechanische armbanduhr
EP3312683A1 (de) 2016-10-18 2018-04-25 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit resonator mit zwei freiheitsgraden und wartungsmechanismus über eine auf einer laufpiste rollenden laufrolle
CN113805456A (zh) * 2020-06-16 2021-12-17 蒙特雷布勒盖股份有限公司 钟表旋转调节器机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3435170B1 (de) * 2017-07-28 2021-06-30 The Swatch Group Research and Development Ltd Uhrwerkoszillator mit flexiblen führungen mit grosser winkelförmiger laufbahn

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DE8136793U1 (de) * 1981-12-17 1983-02-24 Gebrüder Junghans GmbH, 7230 Schramberg Uhrwerk mit Leiterplatte für eine elektronische Antriebssteuerschaltung und Trägerplatte für das Räder- und Zeigerwerk zwischen zwei Gehäuseschalen
JP2002307254A (ja) * 2001-04-10 2002-10-23 Okamoto Machine Tool Works Ltd リニアガイド装置
TW200720866A (en) * 2005-10-06 2007-06-01 Seiko Epson Corp Governor, and a power generating device and an apparatus using the governor
DE602008006057D1 (de) * 2008-07-04 2011-05-19 Swatch Group Res & Dev Ltd Gekoppelte Resonatoren für Uhr
HK1146455A2 (en) * 2010-03-12 2011-06-03 Microtechne Res & Dev Ct Ltd An oscillator system
CH703475B1 (fr) * 2010-07-30 2015-06-30 Swatch Group Res & Dev Ltd Procédé de réalisation d'une transmission sans contact dans un mouvement d'horlogerie.
EP2431823A1 (de) * 2010-09-16 2012-03-21 Blancpain S.A. Blancpain-Hemmung mit verbessertem Anker für Uhrwerk
EP2570870B1 (de) * 2011-09-15 2016-04-06 The Swatch Group Research and Development Ltd. Uhr mit permanent gekoppelten Oszillatoren
EP2690506B1 (de) * 2012-07-25 2015-01-14 Nivarox-FAR S.A. Antischwingungsspirale für Uhr
CN106462104B (zh) * 2014-09-09 2019-02-12 斯沃奇集团研究和开发有限公司 具有改善的等时性的组合式谐振器

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* Cited by examiner, † Cited by third party
Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037717A3 (fr) * 2014-09-09 2016-05-19 Eta Sa Manufacture Horlogère Suisse Mecanisme de synchronisation de deux oscillateurs d'horlogerie avec un rouage
US9958832B2 (en) * 2014-09-09 2018-05-01 Eta Sa Manufacture Horlogere Suisse Method for synchronization of two timepiece oscillators with one gear train
CH711559A1 (en) * 2015-09-23 2017-03-31 Audemars Piguet (Renaud Et Papi) Sa Regulating device for a timepiece, a watch sub-assembly and a clockwork movement.
EP3312682A1 (de) 2016-10-18 2018-04-25 ETA SA Manufacture Horlogère Suisse Qualitativ hochwertiger resonator für mechanische armbanduhr
EP3312683A1 (de) 2016-10-18 2018-04-25 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk mit resonator mit zwei freiheitsgraden und wartungsmechanismus über eine auf einer laufpiste rollenden laufrolle
RU2749944C2 (ru) * 2016-10-18 2021-06-21 Эта Са Мануфактюр Орложэр Сюис Механический часовой механизм с резонатором, имеющим две степени свободы, и с поддерживающим механизмом, использующим бегунок, перемещающийся по дорожке
CN113805456A (zh) * 2020-06-16 2021-12-17 蒙特雷布勒盖股份有限公司 钟表旋转调节器机构
EP3926412A1 (de) * 2020-06-16 2021-12-22 Montres Breguet S.A. Regulator eines uhrwerks
US11835925B2 (en) 2020-06-16 2023-12-05 Montres Breguet S.A. Timepiece rotating regulator mechanism

Also Published As

Publication number Publication date
EP2908189A3 (de) 2016-06-01
EP2908190A2 (de) 2015-08-19
JP6224854B2 (ja) 2017-11-01
EP2908190A3 (de) 2015-11-04
EP2908190B1 (de) 2017-11-01
JP2017515119A (ja) 2017-06-08
RU2680411C1 (ru) 2019-02-21

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