US3528308A - Mechanical resonator of rotation - Google Patents

Mechanical resonator of rotation Download PDF

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Publication number
US3528308A
US3528308A US737002A US3528308DA US3528308A US 3528308 A US3528308 A US 3528308A US 737002 A US737002 A US 737002A US 3528308D A US3528308D A US 3528308DA US 3528308 A US3528308 A US 3528308A
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United States
Prior art keywords
springs
axis
resonator
symmetry
support
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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.)
Expired - Lifetime
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US737002A
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English (en)
Inventor
Robert Favre
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Movado Watch Co SA
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Fabriques Movado
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Priority claimed from CH911067A external-priority patent/CH481411A/fr
Application filed by Fabriques Movado filed Critical Fabriques Movado
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/005—Volatile oil compositions; Vaporous lubricants
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/107—Controlling frequency or amplitude of the oscillating system
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element

Definitions

  • a timepiece movement includes an oscillatory mass having an axis of symmetry and a spring system supporting the mass for oscillation preferentially about such axis of symmetry.
  • the spring system includes a number of leaf springs each secured at one end to a support and at their other ends to the mass with the widths of the springs lying parallel to the axis of symmetry and with the springs containing looped portions such that essentially radial arm portions thereof lie in closely spaced relation.
  • the present invention relates to a mechanical resonator of rotation.
  • the lower symmetry order of the single tuning fork gives to the latter a relatively important effect of position in the field of gravity.
  • the frequency of a tuning fork is higher when its branches are oriented towards the bottom than in the reverse direction, the forces due to gravity being added to the elastic return-forces;
  • the tuning fork is energizable by a lateral shock or a strong trepidation and this more especially as its frequency is lower. These outer effects cause, therefore, a perturbation of the rate.
  • the present invention aims at satisfying these conditions. It relates to a mechanical resonator of rotation, comprising at least one body mounted on a support in overhung position to perform circular oscillations around an axis of symmetry under the action of a device adapted to maintain the oscillations of said body, said resonator being characterized in that said body is mounted on said support by means of a plurality of springs the active portion of which, situated between a first connection with the body and a second connection with the support, has the shape of a cylindrical surface with generating lines parallel to the axis of oscillation of the resonator and retains this character during the elastic deformation generated by the circular oscillation, the length and the width of the active portion of the springs lying on the cylindrical surface, whereas the thickness thereof is perpendicular thereto, and that the developed length of said active portion is greater than the distance between its ends, so as to generate practically only oscillations of pure fiexion and to increase as much as possible the active volume of the springs.
  • a cylinder is a ruled surface with parallel generating lines, of which the cylinder of revolution is only a particular example.
  • FIG. 1 is a plan view of the first embodiment.
  • FIG. 2 is a cross-sectional view thereof, at an enlarged scale, along the line II-II in FIG. 3.
  • FIG. 3 is a cross-sectional view thereof, along the line III-III in FIG. 2.
  • FIG. 4 is a cross-sectional view thereof, along the line IV-IV in FIG. 2.
  • FIG. 5 is a plan view of the second embodiment.
  • FIG. 6 is a plan view thereof at an enlarged scale, the lower body being removed.
  • FIG. 7 is a side view thereof, partially in section, taken from the top in FIG. 5, at the same scale as FIG. 6.
  • FIG. 8 is a side view thereof, taken from the left in FIG. 5, at the same scale as FIG. 6.
  • the resonator of rotation illustrated in FIGS. 1 to 4 includes two oscillating bodies or heads 1 and 2 mounted on a central support 3 in overhung position to perform circular oscillations around an axis of symmetry.
  • the body 1 is mounted on the support 3 by means of four springs 4 to 7 and the body 2 by means of four springs 4 to 7.
  • FIG. 2 shows how the springs 4' to 7' are connected with the body 2; the latter carries four studs 8' of square cross section, on which the springs are soldered after a rigid-angle bend in such a way that the soldered joints are acted upon only by tangential forces.
  • the springs 4 to 7 are connected with the body 1, by means of studs 8 of which only the other end,
  • each of the eight springs has the shape of a tape or band having a constant thickness and a constant width and comprises substantially two plane portions, extending radially with respect to the axis of oscillation and connected with a circular cylindrical portion with generating lines parallel to the axis of oscillation.
  • the active portion of the springs has the shape of a cylindrical surface (in the broad above-mentioned sense) with generating lines parallel to the axis of oscillation of the resonator, the length and the width of the active portion of the springs lying on the cylindrical surface, whereas their thickness is perpendicular thereto.
  • the developed length of said active portion is greater than the distance between its ends, as this is clearly seen in FIG. 2.
  • the springs of the same sustaining system are obtained in pairs from the same piece of material, i.e., here the springs 4 and 5, on the one hand, 6 and 7, on the other hand.
  • the connection thereof with the central support 3 is ensured by a soldering of their common zone 9 (FIG. 2).
  • a common elastic portion belongs to the sustaining springs of one of the bodies and to the sustaining springs of the other body, taken in pairs, so as to produce a dynamic coupling of both bodies.
  • the springs 4 and 4' respectively 5 and 5', have a common elastic portion in the vicinity of their soldering to the central support 3. Due to this fact, the eight springs consist only of two separate pieces.
  • the four springs 4, 4, 5, 5' are, indeed, made from a single piece by stamping and bending; the same may be said for the four springs 6, 6, 7, 7.
  • One of the sustaining springs in the example described the spring 7', carries an impulse pawl 10 adapted to cooperate with a ratchet wheel (not illustrated), in order to convert the oscillatory motion into a unidirectional movement of rotation.
  • This arragement permits transmitting to the said pawl 10 only a fraction of the parasitic movements of the oscillating heads 1 and 2 produced by shocks and trepidations.
  • FIG. 3 illustrates the symmetry of the spring assembly of the resonator with respect to the axis II-II, which guarantees the dynamic balancing and the absence of any effect of position.
  • a rod 11 secured to the support 3 ends in two pivots 12 and 13 engaging with play bores of the heads 1 and 2, respectively (FIG. 4). These pivots limit any accidental displacement of the heads 1 and 2, without stopping the circular oscillation of said heads. In the absence of shock, the pivots 12 and 13 are not in contact with the oscillating heads 1 and 2, so that no friction occurs.
  • the support 3 has an arm 14 of reduced section, which has therefore a certain elasticity.
  • the head or body 1 has two lugs 15, and in the same way the head or body 2 has two lugs 16.
  • a permanent magnet 17 (see FIG. 2), serving for maintaining the oscillations of the resonator by means of a known electromagnetic device.
  • the dynamic balancing of the resonator is realized when both heads 1 and 2 are caused to oscillate at a phase-displacement of the angle 1r, i.e., in phase opposition, so that any reaction on the support 3 is done away with and a very small damping of the oscillation is rendered possible.
  • the resonator as illustrated and described ensures a rational working of the springs and permits giving them maximum dimensions with respect to the available space, so that a better resistance to shocks is obtained.
  • the translation of the oscillating heads 1 and 2 in the plane of oscillation implies a relatively high force, and a displacement of these heads in a direction perpendicular to the plane of oscillation also encounters a great resistance, because the springs are then solicited edgewise.
  • the rotation of the oscillating heads 1 and 2 generates only solicitations of flexion with respect to the relatively small thickness of the springs. The latter mode of oscillation is therefore strongly preferential.
  • the overall size of a mechanical resonator consisting of a time-base for a wristwatch, is as large as possible in order to improve the efficiency and the resonance factor.
  • the maximum overall size is attained when the great axis of the resonator occupies a chord nearly equal to the diameter of the watch.
  • the second embodiment of the invention just relates to a mechanical resonator of rotation permitting accommodating elements of a watch in its central region.
  • This resonator includes two bodies or oscillating heads 18 and 19 mounted on a central support 20 in overhung position to perform circular oscillations around an axis of symmetry.
  • the support 3 consists of the pillar plate of a watch.
  • the bodies 18 and 19 are mounted on the support 20 by means of eight springs 21 to 28, the four upper springs being denoted by the reference numerals 21 to 2'4 and the four lower springs by the reference numerals 25 to 28.
  • Each body is connected with the support by two upper springs and two lower springs.
  • the upper body 18 is connected with the support by the upper springs 21 and 23 and the lower springs 26 and 28, whereas the lower body 19 is connected with the support by the upper springs 22 and 24 and the lower springs 25 and 27.
  • This arrangement is chosen here for practical reasons, but it has a general advantage, due to the fact that the springs of the same level work in pairs of phase opposition, which better balances the forces than if all of the upper springs were connected with the same body, in which case they shuold work in phase. The dynamic balancing would then necessitate a solicitation of torsion on the soldering joints connecting the springs with the support.
  • a first group of springs 21, 22, 25, 26 is connected with the fixing centre 29, whereas a second group of springs 23, 24, 27, 28 is connected with the fixing centre 30.
  • the attachment of the springs to the fixing centres 29 and 30 is obtained by bending the widened end of the springs and electric solderings arranged in such a way that they are exposed only to tangential forces.
  • the fixing centres 29 and 30 are situated at a certain distance from the axis of oscillation of the resonator and are connected with each other by a yoke-shaped elastic element 31, comprising two perpendicular branches 32 and 33 on which are sold-.
  • the elastic element 31 is spaced apart from the axis of oscillation of the resonator, so that the central region of the resonator remains available over a certain height for receiving elements of the watch; its axis of symmetry is perpendicular to the great axis of the resonator.
  • the elastic element 31 is itself elastically connected with a base portion 34 by the elastic tongue 35. Only the base portion 34 is in contact with the pillar plate 20, on which it is positioned by pins 36 and secured by a screw 37.
  • the elastic element 31 which connects both fixing centres .29 and 30 with each other contributes to linearize the constraints of oscillation, and therefore to render the frequency of oscillation independent of the amplitude (isochronism).
  • the spacing of the branches 32 and 33 of the elastic element 31 slightly influences the resonance frequency in such a way that it is possible to contemplate the correction of the thermic coefficierlt of frequency by a bimetallic structure of these branches.
  • the developed length of the springs 21 to 2 8 is relatively large with respect to the distance between both extreme connecting points of each of them, so as to avoid nonlinear elastic solicitations.
  • the springs 21 to 28 have the shape of a double hairpin, as clearly illustrated in FIGS. and 6.
  • FIGS. 7 and 8 illustrate the details of structure of the elastic element 31, with its branches 32 and 33, and of the springs 21 to 28. These springs are arranged in pairs.
  • each of the bodies 18 and 19 comprises a cruciform arm carrying two diametrically opposed transducerd elements 39, 40.
  • Each of the transducer elements has a permanent magnet serving for maintaining the oscillations of the resonator by a known electromagnetic device.
  • a rod 41 carried by a stationary bridge 42 engages with play bores 43 of the heads 18 and 19, in order to limit any accidental displacement of the heads 18 and 19, without stopping the circular oscillation of said heads. In the absence of shocks, the rod 41 is not in contact with the oscillating heads 18 and 19.
  • said spring means connecting said mass to said support for oscillation of the latter about a rotational axis substantially coinciding with said axis of symmetry, said spring means including a leaf spring having a width substantially greater than its thickness and arranged with its widthwise faces perpendicular to said predetermined plane, said leaf spring being secured at one end to said support and at its other end to said mass, said leaf spring including elongate arm portions extending generally radially with respect to said axis and in closely spaced opposition to each other in side-by-side relation in a direction normal to said axis whereby to resist both radial and axial displacement of said mass with respect to its rotational axis under shock loading conditions.
  • said spring means connecting said mass to said support for oscillation of the mass about a rotational axis substantially coinciding with said axis of symmetry, said spring means including a plurality of striplike leaf springs each having a Width substantially greater than its thickness and each arranged with its widthwise faces perpendicular to said predetermined plane, each said leaf spring being secured at one end to said support and at its other end to said mass and each including closely spaced arm portions disposed essentially radially with respect to said axis of symmetry and in side-by-side relation in a direction normal to said axis the arm portions of the several leaf springs being symmetrically arranged about said axis of symmetry, and the length of each leaf spring being substantially greater than the distance between its point of connection to said support and its point of connection to said mass.
  • timepiece resonator as defined in claim 2 including a stop connected to said support, said mass having an enlarged opening at its axis of symmetry within which said stop is received with clearance, whereby positively to limit radial displacement of said mass under the influence of shock loading.
  • timepiece resonator as defined in claim 2 including a mounting base, and means joining said support to said base for elastic movement thereof about an axis parallel to but displaced from said axis of symmetry.
  • said support is U-shaped presenting legs to the free ends of which said leaf springs are joined, said legs being resilient to allow movement of the free ends thereof toward and away from each other.
  • each leaf spring is of hairpin shape.
  • a resonator for timepieces comprising, in combination,
  • each leaf spring having an inner end portion fixed to said support with the various points of fixation being arranged symmetrically around said axis of symmetry, each leaf spring having an outer end fixed to said mass with the various points of fixation between such outer ends and said mass being arranged symmetrically about said axis of symmetry, each leaf spring being of a length substantially greater than the radial spacing between its inner and outer ends and each presenting a plurality of closely spaced arms disposed essentially radially with respect to said axis of symmetry, and in side-by-side opposed relation in a direction normal to said axis and each leaf spring having its widthwise dimension disposed parallel to said axis of symmetry so as to be perpendicular to the plane of said mass, whereby to minimize axial and radial displacement of said mass with respect to said axis of symmetry while preferentially allowing oscillation thereof about said axis of symmetry.
  • a resonator for timepieces comprising, in combination,
  • each leaf spring having its widthwise faces leaf spring having a reversely bent intermediate portion presenting closely spaced essentially radial arm portions in side-by-side opposed relation in a direction normal to said axes whereby to resist displacements of said masses radially of said axes of symmetry under shock loading conditions.
  • a resonator as defined in claim 12 wherein there are four pairs of leaf springs, each pair being disposed in side-by-side relation and having those portions thereof adjacent said support integrally interconnected.
  • a resonator as defined in claim 12 wherein said support comprises a flat plate disposed below said masses and to one side of said axes of symmetry, said support including a yoke presenting generally parallel legs projecting toward but straddling said axes of symmetry and to the free ends of which said leaf springs are attached to provide a space between said legs and below said masses within which other timepiece elements may be mounted.
  • a resonator of the character described comprising, in combination,
  • a spring system carried by said support for rotationally centering said mass for easy movement about its axis of symmetry while resisting axial and radial displacements of said mass with respect to its axis of symmetry which may be due to shock loading of the resonator, and
  • said spring system comprising a plurality of elongate leaf springs extending generally radially of said axis outwardly from said support to said mass, said leaf springs having their widthwise faces parallel to said axis and having reverse looped portions presenting closely spaced essentially radial arm positions in sideby-side opposed relation in a direction normal to said axis to increase the effective lengths of said leaf springs while effecting the resistance to said axial and radial displacement of the mass.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Electric Clocks (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
US737002A 1967-06-27 1968-06-14 Mechanical resonator of rotation Expired - Lifetime US3528308A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH911067A CH481411A (fr) 1967-06-27 1967-06-27 Résonateur de rotation mécanique pour appareil de mesure du temps
CH662968A CH510902A (fr) 1967-06-27 1968-05-03 Résonateur de rotation mécanique pour appareil de mesure du temps

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US3528308A true US3528308A (en) 1970-09-15

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US737002A Expired - Lifetime US3528308A (en) 1967-06-27 1968-06-14 Mechanical resonator of rotation

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US (1) US3528308A (enExample)
CH (1) CH510902A (enExample)
DE (1) DE1773671B1 (enExample)
FR (1) FR1571077A (enExample)
GB (1) GB1197015A (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6560783B2 (en) 2001-03-05 2003-05-13 Kelly Cannings Headband for holding hairs off of forehead and out of face, and method of making the same
JP2016070928A (ja) * 2014-09-26 2016-05-09 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 等時性の近軸の計時器用共振器
US9477205B2 (en) * 2014-12-18 2016-10-25 The Swatch Group Research And Development Ltd Tuning fork oscillator for timepieces
US20160327909A1 (en) * 2014-01-13 2016-11-10 Ecole Polytechnique Federale De Lausanne (Epfl) General Two Degree of Freedom Isotropic Harmonic Oscillator and Associated Time Base
JP2017502317A (ja) * 2014-01-13 2017-01-19 エコール・ポリテクニーク・フェデラル・ドゥ・ローザンヌ （ウ・ペ・エフ・エル）Ｅｃｏｌｅ Ｐｏｌｙｔｅｃｈｎｉｑｕｅ Ｆｅｄｅｒａｌｅ Ｄｅ Ｌａｕｓａｎｎｅ （Ｅｐｆｌ） 脱進機のない、または簡易脱進機を有する等方性調和振動子および関連するタイムベース
US20190033784A1 (en) * 2017-07-28 2019-01-31 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
US20190391532A1 (en) * 2018-06-25 2019-12-26 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
CN110780572A (zh) * 2018-07-24 2020-02-11 斯沃奇集团研究和开发有限公司 包括具有长角向行程的柔性轴承的钟表振荡器
US11175630B2 (en) * 2018-04-23 2021-11-16 Eta Sa Manufacture Horlogere Suisse Anti shock protection for a resonator mechanism with rotary flexure bearing
US12265359B2 (en) * 2016-07-06 2025-04-01 Ecole Polytechnique Federale De Lausanne (Epfl) General 2 degree of freedom isotropic harmonic oscillator and associated time base without escapement or with simplified escapement

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107481A (en) * 1961-06-30 1963-10-22 Oram John Anderson Timing device utilizing a mechanism
US3269106A (en) * 1964-01-20 1966-08-30 Centre Electron Horloger Mechanical resonator for normal frequency oscillators in time-keepers
US3277394A (en) * 1963-03-12 1966-10-04 United States Time Corp Temperature compensated electromechanical resonator
US3316708A (en) * 1964-07-31 1967-05-02 Ct Electronique Horloger Mechanical resonator for normal frequency oscillators in time measuring device
FR1490763A (fr) * 1966-07-22 1967-08-04 Movado Montres Dispositif de stabilisation de la fréquence d'oscillation d'un oscillateur mécanique pour pièce d'horlogerie
GB1106098A (en) * 1964-07-10 1968-03-13 Movado Montres Improvements relating to springs in clockwork mechanisms
CH462723A (fr) * 1963-10-14 1968-03-15 Jaz Sa Diapason destiné à servir de base de temps
US3408808A (en) * 1965-07-13 1968-11-05 United States Time Corp Watch vibrator
US3421309A (en) * 1966-06-13 1969-01-14 Bulova Watch Co Inc Unitized tuning fork vibrator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107481A (en) * 1961-06-30 1963-10-22 Oram John Anderson Timing device utilizing a mechanism
US3277394A (en) * 1963-03-12 1966-10-04 United States Time Corp Temperature compensated electromechanical resonator
CH462723A (fr) * 1963-10-14 1968-03-15 Jaz Sa Diapason destiné à servir de base de temps
US3269106A (en) * 1964-01-20 1966-08-30 Centre Electron Horloger Mechanical resonator for normal frequency oscillators in time-keepers
GB1106098A (en) * 1964-07-10 1968-03-13 Movado Montres Improvements relating to springs in clockwork mechanisms
US3316708A (en) * 1964-07-31 1967-05-02 Ct Electronique Horloger Mechanical resonator for normal frequency oscillators in time measuring device
US3408808A (en) * 1965-07-13 1968-11-05 United States Time Corp Watch vibrator
US3421309A (en) * 1966-06-13 1969-01-14 Bulova Watch Co Inc Unitized tuning fork vibrator
FR1490763A (fr) * 1966-07-22 1967-08-04 Movado Montres Dispositif de stabilisation de la fréquence d'oscillation d'un oscillateur mécanique pour pièce d'horlogerie

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6560783B2 (en) 2001-03-05 2003-05-13 Kelly Cannings Headband for holding hairs off of forehead and out of face, and method of making the same
US20160327909A1 (en) * 2014-01-13 2016-11-10 Ecole Polytechnique Federale De Lausanne (Epfl) General Two Degree of Freedom Isotropic Harmonic Oscillator and Associated Time Base
JP2017502317A (ja) * 2014-01-13 2017-01-19 エコール・ポリテクニーク・フェデラル・ドゥ・ローザンヌ （ウ・ペ・エフ・エル）Ｅｃｏｌｅ Ｐｏｌｙｔｅｃｈｎｉｑｕｅ Ｆｅｄｅｒａｌｅ Ｄｅ Ｌａｕｓａｎｎｅ （Ｅｐｆｌ） 脱進機のない、または簡易脱進機を有する等方性調和振動子および関連するタイムベース
US10585398B2 (en) * 2014-01-13 2020-03-10 Ecole Polytechnique Federale De Lausanne (Epfl) General two degree of freedom isotropic harmonic oscillator and associated time base
JP2016070928A (ja) * 2014-09-26 2016-05-09 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 等時性の近軸の計時器用共振器
RU2695518C2 (ru) * 2014-09-26 2019-07-23 Эта Са Мануфактюр Орложэр Сюис Изохронный параксиальный часовой резонатор
US9477205B2 (en) * 2014-12-18 2016-10-25 The Swatch Group Research And Development Ltd Tuning fork oscillator for timepieces
RU2629167C2 (ru) * 2014-12-18 2017-08-24 Те Свотч Груп Рисерч Энд Дивелопмент Лтд Камертонный генератор колебаний для часов
US12265359B2 (en) * 2016-07-06 2025-04-01 Ecole Polytechnique Federale De Lausanne (Epfl) General 2 degree of freedom isotropic harmonic oscillator and associated time base without escapement or with simplified escapement
US20190033784A1 (en) * 2017-07-28 2019-01-31 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
US10866565B2 (en) * 2017-07-28 2020-12-15 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
US11175630B2 (en) * 2018-04-23 2021-11-16 Eta Sa Manufacture Horlogere Suisse Anti shock protection for a resonator mechanism with rotary flexure bearing
US20190391532A1 (en) * 2018-06-25 2019-12-26 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
US10895845B2 (en) * 2018-06-25 2021-01-19 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
US10935933B2 (en) * 2018-07-24 2021-03-02 The Swatch Group Research And Development Ltd Timepiece oscillator with flexure bearings having a long angular stroke
CN110780572B (zh) * 2018-07-24 2021-09-03 斯沃奇集团研究和开发有限公司 机械钟表振荡器以及包括其的钟表机芯和手表
CN110780572A (zh) * 2018-07-24 2020-02-11 斯沃奇集团研究和开发有限公司 包括具有长角向行程的柔性轴承的钟表振荡器

Also Published As

Publication number Publication date
GB1197015A (en) 1970-07-01
CH510902A (fr) 1971-01-29
DE1773671B1 (de) 1971-10-28
FR1571077A (enExample) 1969-06-13

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