US3269106A - Mechanical resonator for normal frequency oscillators in time-keepers - Google Patents

Mechanical resonator for normal frequency oscillators in time-keepers Download PDF

Info

Publication number
US3269106A
US3269106A US424751A US42475165A US3269106A US 3269106 A US3269106 A US 3269106A US 424751 A US424751 A US 424751A US 42475165 A US42475165 A US 42475165A US 3269106 A US3269106 A US 3269106A
Authority
US
United States
Prior art keywords
frames
straight line
resonance
relation
masses
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.)
Expired - Lifetime
Application number
US424751A
Inventor
Waldburger Heinz
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.)
Centre Electronique Horloger SA
Original Assignee
Centre Electronique Horloger SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre Electronique Horloger SA filed Critical Centre Electronique Horloger SA
Application granted granted Critical
Publication of US3269106A publication Critical patent/US3269106A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
    • 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
    • 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
    • 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
    • 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
    • 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
    • G04C3/102—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 of the mechanical oscillator or of the coil

Definitions

  • H-shaped and O-shaped resonators of various designs have also become known, which can be used for fitting in wrist watches and the like, whilst the following four main characteristics, amongst others, must be required of them; small position error, high quality factor, high isochronism and low frequency.
  • the position error can be compensated by the use of two tuning forks arranged in opposition (H-shaped resonator). This, however, has the disadvantage that an increase in frequency occurs for the same length and that there are four masses (and consequently difficulties in coupling).
  • the position error vanishes completely in the case of a known O-shaped flexion vibrator because the two vibrating rod members which are weighted in the middle, owing to their symmetry guide the motion of the two mass points along a common straight line.
  • the two spring members are connected to the securing points by elastic connecting pieces either arranged at each of their two ends or between them.
  • This elastic connection of the resonance bodies proper (the dynamic effect of which corresponds to that of two vibrating rods which are weighted in the middle) is necessary in order to reduce the influence of the securing means on the frequency to an acceptable value.
  • the frequency would be dependent on the amplitude (isochronism error), owing to the fact that bending of the rods produces a non-linear increase of the normal forces.
  • the influence of the securing means on the frequency is practically eliminated by the above-mentioned elastic suspension only for small amplitudes, and in addition, the quality factor is adversely influenced, owing to the fact that the securing points transmit small reaction forces (which compensate one another) to the rigid base plate, and that the spring members, which connect the resonator proper with the securing points, although necessary, do not take direct part with their bending elasticity in the resonance phenomenon and thus actually act as parasitic elements owing to their inner and outer friction.
  • This known mechanical resonator for normal frequency oscillators in time-keepers has two axes of symmetry which are at right angles to one another and of which the one forms the resonance straight line, and in addition, two masses oscillating in opposition on the resonance line as well as securing means, the securing point or rigidly connected securing points of which stand mathematically still in space.
  • the present invention also con- "ice cerns a resonator of this known kind, which, however, does not offer the disadvantages mentioned above.
  • the resonator according to the invention is characterized by two identical swinging frames which are arranged symmetrically in relation to the axes of symmetry in such a manner that their longitudinal sides are halved by the resonance straight line, and which carry on each of their farther longitudinal sides an oscillating mass arranged symmetrically in relation to the resonance straight line, the securing means being arranged on the resonance straight line or symmetrically on either side of the same on the axis of symmetry and elastically connecting one to the other the two opposite longitudinal sides of the two swinging frames.
  • the resonator according to the invention makes it possible to prevent undesirable reactions at the securing points from influencing the frequency and the quality factor at any amplitude.
  • the resonator according to the invention can be designed in such a manner that, apart from the direct securing point, it comprises no partwhich does not contribute directly with its elasticity to the resonance phenomenon and the sole purpose of which would be to connect the oscillating parts elastically with the securing point.
  • the securing points may easily be designed in such a manner that the frequency of the resonant oscillation of same direction may be reduced in a sufliciently pronounced degree in comparison with the resonant oscillation of opposite direction used for time measurement.
  • the reso na-tor according to the invention offers, compared to the O-shaped oscillator of known type mentioned above, the additional advantage that for the same construction length it oscillates at a lower frequency.
  • FIGURE 1 shows a first, FIGURE 2 a second, FIG- URE 3 a third and FIGURE 4 a fourth embodiment seen from above in plan view.
  • two masses 1 are each symmetrically connected with the two spring frames 2 which determine the resonance, and which each consist of two parts, which are symmetrical in relation to the resonance straight line r and to the axes s* which are parallel to the axis of symmetry s which is at right angles to r.
  • the two frames 2 are connected to one another by means of the two identical coupling members 3, and these in their turn are connected to the securing point 5 by means of the two identical members 4.
  • the cross section of the frame 2 is the same over the whole of its length, and it is to be noted that the elastic length of the frame has been reduced by a same amount in relation to the total length of the resonator by the masses and by the securing means.
  • the embodiment according to FIGURE 2 differs from the preceding one in four points.
  • the securing is effected in two securing points 15 symmetrically arranged in relation to the resonance straight line r, the two frames 12 being coupled by the members 13 and these being elastically connected to the securing points 15 by means of the cross-shaped member 14.
  • the four short sides 12a of the frames 12 are bent into loops in order to lessen the stiffness of the frame.
  • the masses 11 are H-shaped, but also symmetrically arranged about the frame.
  • the masses 11 are here secured to the frame and are made of another material as that of the latter.
  • the securing is effected in two symmetrical points 25 located on the axis of symmetry s, the two frames 22 being coupled by the member 23 and the latter being connected to the securing points 25 by the two members 24.
  • the members 23 and 24 together form a cross-shaped holder.
  • the frames 22 are made less stiff by a reduction in cross-section in the four edge parts 22a.
  • the elastic length of the frame 22 is less reduced on the side corresponding to the securing points than on the side of the masses 21. These are only secured on one side to the frame 22.
  • FIGURE 4 illustrates a further securing possibility and a possible variant of the shape of the frame 32.
  • the securing means make use of two securing points 35 symmetrically arranged on the axis 1', from which two identical members 34 lead to the two identical coupling members 33.
  • the members 33 and 34 form a T-shaped elastic member.
  • the masses 31 are identical with the masses 11.
  • the oscillating frames are of a generally elongated rectangular shape.
  • These oscillating frames could be of any other given shape, provided of course that the symmetry in relation to the two axes of symmetry is preserved.
  • the oscillating frames could be made elliptical in shape.
  • a mechanical resonator for normal frequency oscillators in time-keepers with two axes of symmetry which are at right angles to one another and of which the one forms the resonance straight line, comprising two masses oscillating in opposition on the resonance line, securing means which stand mathematically still in space with relation to said masses, two substantially identical swinging frames having two opposite longitudinal and two opposite short sides arranged symmetrically in relation to the axes of symmetry in such a manner that the longitudinal sides are halved by the resonance straight line, said frames carrying on each of their farther longitudinal sides one of said oscillating masses arranged symmetrically in relation to the resonance straight line, said securing means being arranged symmetrically between said frames and elastically connecting the two adjacent longitudinal sides of said frames.
  • a resonator according to claim 1 wherein said frames comprise rods of constant cross-section.
  • a resonator according to claim 1 where said frames and said masses are made of different materials.
  • a resonator according to claim 1 wherein the short sides of said frames comprise at least one spring loop.
  • a resonator according to claim 1 wherein the short sides of said frames have a reduced cross-section.
  • a resonator according to claim 1 wherein two securing points are provided which lie symmetrically in relation to the centre on the resonance straight line, a crossshaped connection connecting said frames and said securing points together.
  • a resonator according to claim 1 wherein two securing points are provided on the axis of symmetry which is perpendicular in relation to the resonance straight line and the coupling of said two frames and the connection with said securing points being effected by means of an elastic cross-shaped support.
  • a resonator according to claim 1 wherein two securing points are provided on the axis of symmetry which is perpendicular in relation to the resonance straight line and the coupling of said two frames and the connection with said securing points being effected by means of two T-shaped elastic members.
  • a mechanical resonator for normal frequency oscillators in time-keepers with two axes of symmetry which are at right angles to one another and of which one forms the resonance straight line, comprising two masses oscillating in opposition on the resonance straight line, two substantially identical swinging frames having each two opposite longitudinal sides and two opposite short sides arranged symmetrically in relation to the axes of symmetry so that their longitudinal sides are halved by said resonance straight line, said frames carrying on each of their farther longitudinal sides one of said oscillating masses arranged symmetrically in relation to the resonance straight line, and securing means comprising two elastic T-shaped connecting pieces connecting the two adjacent longitudinal sides of said swinging-frames, and a securing point disposed at substantially the crossing of said two symmetry axes and standing mathematically still in space.

Description

Aug. 30, 1966 H. WALDBURGER 3,269,106
MECHANICAL RESONATOR FOR NORMAL FREQUENCY OSCILLATORS IN TIME-KEEPERS Filed Jan. 11, 1965 MM gfzg 10%; W
United States Patent 3,269,106 MECHANICAL RESONATOR FOR NORMAL FRE- QUENCY OSCILLATORS IN TIME-KEEiERS Heinz Waldburger, Neuehatel, Switzerland, assignor to Centre Electronique Horloger S.A., Neuchatel, Switzerland, a corporation of Switzerland Filed Jan. 11, 1965, Ser. No. 424,751 Claims priority, applicatisor/s6witzerland, Jan. 20, 1964, 8 4
10 Claims. (Cl. 58-23) The use of magnetically or electrically driven and electronically controlled elastic resonators as time standards has been known for some time. The interest in such oscillators, however, has considerably increased, since a tuning fork with weighted branches has been used as a remarkably precise time standard in a wrist watch.
H-shaped and O-shaped resonators of various designs have also become known, which can be used for fitting in wrist watches and the like, whilst the following four main characteristics, amongst others, must be required of them; small position error, high quality factor, high isochronism and low frequency.
The influence on the frequency of an elastically mounted mass point of a modification of its position in a gravitational field depends mainly on the deviation of the trajectory of the mass point from a straight line. In the case of the weighted tuning fork the position error arising from this is relatively important compared to the other errors.
The position error can be compensated by the use of two tuning forks arranged in opposition (H-shaped resonator). This, however, has the disadvantage that an increase in frequency occurs for the same length and that there are four masses (and consequently difficulties in coupling).
The position error vanishes completely in the case of a known O-shaped flexion vibrator because the two vibrating rod members which are weighted in the middle, owing to their symmetry guide the motion of the two mass points along a common straight line. In this case the two spring members are connected to the securing points by elastic connecting pieces either arranged at each of their two ends or between them. This elastic connection of the resonance bodies proper (the dynamic effect of which corresponds to that of two vibrating rods which are weighted in the middle) is necessary in order to reduce the influence of the securing means on the frequency to an acceptable value. If the two flexion rods were to be secured directly at both ends, then the frequency would be dependent on the amplitude (isochronism error), owing to the fact that bending of the rods produces a non-linear increase of the normal forces. The influence of the securing means on the frequency is practically eliminated by the above-mentioned elastic suspension only for small amplitudes, and in addition, the quality factor is adversely influenced, owing to the fact that the securing points transmit small reaction forces (which compensate one another) to the rigid base plate, and that the spring members, which connect the resonator proper with the securing points, although necessary, do not take direct part with their bending elasticity in the resonance phenomenon and thus actually act as parasitic elements owing to their inner and outer friction.
This known mechanical resonator for normal frequency oscillators in time-keepers has two axes of symmetry which are at right angles to one another and of which the one forms the resonance straight line, and in addition, two masses oscillating in opposition on the resonance line as well as securing means, the securing point or rigidly connected securing points of which stand mathematically still in space. The present invention also con- "ice cerns a resonator of this known kind, which, however, does not offer the disadvantages mentioned above.
The resonator according to the invention is characterized by two identical swinging frames which are arranged symmetrically in relation to the axes of symmetry in such a manner that their longitudinal sides are halved by the resonance straight line, and which carry on each of their farther longitudinal sides an oscillating mass arranged symmetrically in relation to the resonance straight line, the securing means being arranged on the resonance straight line or symmetrically on either side of the same on the axis of symmetry and elastically connecting one to the other the two opposite longitudinal sides of the two swinging frames.
The resonator according to the invention makes it possible to prevent undesirable reactions at the securing points from influencing the frequency and the quality factor at any amplitude. In addition the resonator according to the invention can be designed in such a manner that, apart from the direct securing point, it comprises no partwhich does not contribute directly with its elasticity to the resonance phenomenon and the sole purpose of which would be to connect the oscillating parts elastically with the securing point. The securing points may easily be designed in such a manner that the frequency of the resonant oscillation of same direction may be reduced in a sufliciently pronounced degree in comparison with the resonant oscillation of opposite direction used for time measurement. Finally the reso na-tor according to the invention offers, compared to the O-shaped oscillator of known type mentioned above, the additional advantage that for the same construction length it oscillates at a lower frequency.
Four embodiments of the resonator according to the invention will now be described by way of examples with reference to the accompanying drawing.
FIGURE 1 shows a first, FIGURE 2 a second, FIG- URE 3 a third and FIGURE 4 a fourth embodiment seen from above in plan view.
In the first embodiment illustrated in FIGURE 1, two masses 1 are each symmetrically connected with the two spring frames 2 which determine the resonance, and which each consist of two parts, which are symmetrical in relation to the resonance straight line r and to the axes s* which are parallel to the axis of symmetry s which is at right angles to r. The two frames 2 are connected to one another by means of the two identical coupling members 3, and these in their turn are connected to the securing point 5 by means of the two identical members 4. The constructive design of the parts 3 and 4, which together form a T-shaped connecting piece, together with the other dimensions, determine the coupling between the two oscillating frames 2 as well as the (lower) frequency of the oscillation of same direction, which may naturally not be used owing to its reaction on the securing point, but which owing to its relation with the possible influence of disturbances has a certain importance. The cross section of the frame 2 is the same over the whole of its length, and it is to be noted that the elastic length of the frame has been reduced by a same amount in relation to the total length of the resonator by the masses and by the securing means.
The embodiment according to FIGURE 2 differs from the preceding one in four points. First of all the securing is effected in two securing points 15 symmetrically arranged in relation to the resonance straight line r, the two frames 12 being coupled by the members 13 and these being elastically connected to the securing points 15 by means of the cross-shaped member 14. Secondly, the four short sides 12a of the frames 12 are bent into loops in order to lessen the stiffness of the frame. Thirdly, the masses 11 are H-shaped, but also symmetrically arranged about the frame. Fourthly, the masses 11 are here secured to the frame and are made of another material as that of the latter.
In the case of the third embodiment illustrated in FIG- URE 3, the securing is effected in two symmetrical points 25 located on the axis of symmetry s, the two frames 22 being coupled by the member 23 and the latter being connected to the securing points 25 by the two members 24. The members 23 and 24 together form a cross-shaped holder. The frames 22 are made less stiff by a reduction in cross-section in the four edge parts 22a. The elastic length of the frame 22 is less reduced on the side corresponding to the securing points than on the side of the masses 21. These are only secured on one side to the frame 22.
FIGURE 4 illustrates a further securing possibility and a possible variant of the shape of the frame 32. The securing means make use of two securing points 35 symmetrically arranged on the axis 1', from which two identical members 34 lead to the two identical coupling members 33. The members 33 and 34 form a T-shaped elastic member. The masses 31 are identical with the masses 11.
In the illustrated embodiments the oscillating frames are of a generally elongated rectangular shape. These oscillating frames could be of any other given shape, provided of course that the symmetry in relation to the two axes of symmetry is preserved. For instance the oscillating frames could be made elliptical in shape. Finally it would also be possible to vary the cross-section of the frames, provided the necessary symmetry is observed.
What I claim is:
1. A mechanical resonator for normal frequency oscillators in time-keepers, with two axes of symmetry which are at right angles to one another and of which the one forms the resonance straight line, comprising two masses oscillating in opposition on the resonance line, securing means which stand mathematically still in space with relation to said masses, two substantially identical swinging frames having two opposite longitudinal and two opposite short sides arranged symmetrically in relation to the axes of symmetry in such a manner that the longitudinal sides are halved by the resonance straight line, said frames carrying on each of their farther longitudinal sides one of said oscillating masses arranged symmetrically in relation to the resonance straight line, said securing means being arranged symmetrically between said frames and elastically connecting the two adjacent longitudinal sides of said frames.
2. A resonator according to claim 1, wherein said frames comprise rods of constant cross-section.
3. A resonator according to claim 1 wherein said frames are substantially rectangular in shape.
4. A resonator according to claim 1, where said frames and said masses are made of different materials.
5. A resonator according to claim 1, wherein the short sides of said frames comprise at least one spring loop.
6. A resonator according to claim 1, wherein the short sides of said frames have a reduced cross-section.
7. A resonator according to claim 1, wherein two securing points are provided which lie symmetrically in relation to the centre on the resonance straight line, a crossshaped connection connecting said frames and said securing points together.
8. A resonator according to claim 1, .wherein two securing points are provided on the axis of symmetry which is perpendicular in relation to the resonance straight line and the coupling of said two frames and the connection with said securing points being effected by means of an elastic cross-shaped support.
9. A resonator according to claim 1, wherein two securing points are provided on the axis of symmetry which is perpendicular in relation to the resonance straight line and the coupling of said two frames and the connection with said securing points being effected by means of two T-shaped elastic members.
10. A mechanical resonator for normal frequency oscillators in time-keepers, with two axes of symmetry which are at right angles to one another and of which one forms the resonance straight line, comprising two masses oscillating in opposition on the resonance straight line, two substantially identical swinging frames having each two opposite longitudinal sides and two opposite short sides arranged symmetrically in relation to the axes of symmetry so that their longitudinal sides are halved by said resonance straight line, said frames carrying on each of their farther longitudinal sides one of said oscillating masses arranged symmetrically in relation to the resonance straight line, and securing means comprising two elastic T-shaped connecting pieces connecting the two adjacent longitudinal sides of said swinging-frames, and a securing point disposed at substantially the crossing of said two symmetry axes and standing mathematically still in space.
References Cited by the Examiner UNITED STATES PATENTS 3,170,278 2/1965 Stutz 5823 RICHARD B. WILKINSON, Primary Examiner.
G. F. BAKER, Assistant Examiner.

Claims (1)

1. A MECHANICAL RESONATOR FORM NORMAL FREQUENCY OSCILLATORS IN TIME-KEEPERS, WITH TWO AXES OF SYMMETRY WHICH ARE AT RIGHT ANGLES TO ONE ANOTHER AND OF WHICH THE ONE FORMS THE RESONANCE STRAIGHT LINE, COMPRISING TWO MASSES OSCILLATING IN OPPOSITION ON THE RESONANCE LINE, SECURING MEANS WHICH STAND MATHEMATICALLY STILL IN SPACE WITH RELATION TO SAID MASSES, TWO SUBSTANTIALLY IDENTICAL SWINGING FRAMES HAVING TWO OPPOSITE LONGITUDINAL AND TWO OPPOSITE SHORT SIDES ARRANGED SYMMETRICALLY IN RELATION TO THE AXES OF SYMMETRY IN SUCH MANNER THAT THE LONGITUDINAL SIDES ARE HALVED BY THE RESONANCE STRAIGHT LINE, SAID FRAMES CARRYING ON EACH OF THEIR FARTHER LONGITUDINAL SIDES ONE OF SAID OSCILLATING MASSES ARRANGED SYMMETRICALLY IN RELATION TO RESONANCE STRAIGHT LINE, SAID SECURING MEANS BEING ARRANGED SYMMETRICALLY BETWEEN SAID FRAMES AND ELASTICALLY CONNECTING THE TWO ADJACENT LONGITUDINAL SIDES OF SAID FRAMES.
US424751A 1964-01-20 1965-01-11 Mechanical resonator for normal frequency oscillators in time-keepers Expired - Lifetime US3269106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH58264A CH406984A (en) 1964-01-20 1964-01-20 Mechanical resonator for normal frequency oscillators in timing devices

Publications (1)

Publication Number Publication Date
US3269106A true US3269106A (en) 1966-08-30

Family

ID=4190332

Family Applications (1)

Application Number Title Priority Date Filing Date
US424751A Expired - Lifetime US3269106A (en) 1964-01-20 1965-01-11 Mechanical resonator for normal frequency oscillators in time-keepers

Country Status (8)

Country Link
US (1) US3269106A (en)
AT (1) AT252823B (en)
BE (1) BE658495A (en)
CH (2) CH58264A4 (en)
FR (1) FR1421123A (en)
GB (1) GB1067148A (en)
NL (1) NL6500662A (en)
SE (1) SE319729B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486049A (en) * 1967-03-31 1969-12-23 Centre Electron Horloger Mechanical resonator
US3528308A (en) * 1967-06-27 1970-09-15 Movado Montres Mechanical resonator of rotation
US20160011567A1 (en) * 2014-07-14 2016-01-14 Nivarox-Far S.A. Flexible timepiece guidance
US9429916B2 (en) 2014-09-26 2016-08-30 Eta Sa Manufacture Horlogere Suisse Isochronous paraxial timepiece resonator
US9477205B2 (en) * 2014-12-18 2016-10-25 The Swatch Group Research And Development Ltd Tuning fork oscillator for timepieces
US20170108830A1 (en) * 2014-05-05 2017-04-20 Asgalium Unitec Sa Tuning Fork Mechanical Oscillator for Clock Movement
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
RU2686446C2 (en) * 2014-01-13 2019-04-25 Эколь Политекник Федераль Де Лозанн (Епфл) Isotropic harmonic oscillator with at least two degrees of freedom, and corresponding controller with missing dispensing mechanism or with simplified dispensing mechanism
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 (en) * 2018-07-24 2020-02-11 斯沃奇集团研究和开发有限公司 Timepiece oscillator comprising a flexible bearing with a long angular travel
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH512757A (en) * 1967-06-27 1971-05-14 Movado Montres Mechanical rotation resonator for time measuring device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170278A (en) * 1961-09-18 1965-02-23 Foerderung Forschung Gmbh Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170278A (en) * 1961-09-18 1965-02-23 Foerderung Forschung Gmbh Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486049A (en) * 1967-03-31 1969-12-23 Centre Electron Horloger Mechanical resonator
US3528308A (en) * 1967-06-27 1970-09-15 Movado Montres Mechanical resonator of rotation
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
US10365609B2 (en) 2014-01-13 2019-07-30 Ecole Polytechnique Federale De Lausanne (Epfl) Isotropic harmonic oscillator and associated time base without escapement or with simplified escapement
RU2686869C2 (en) * 2014-01-13 2019-05-06 Эколь Политекник Федераль Де Лозанн (Епфл) Isotropic harmonic oscillator and corresponding regulator with missing trigger or with simplified trigger
RU2686446C2 (en) * 2014-01-13 2019-04-25 Эколь Политекник Федераль Де Лозанн (Епфл) Isotropic harmonic oscillator with at least two degrees of freedom, and corresponding controller with missing dispensing mechanism or with simplified dispensing mechanism
US10459405B2 (en) * 2014-05-05 2019-10-29 The Swatch Group Research And Development Ltd. Tuning fork mechanical oscillator for clock movement
US20170108830A1 (en) * 2014-05-05 2017-04-20 Asgalium Unitec Sa Tuning Fork Mechanical Oscillator for Clock Movement
CN105278310A (en) * 2014-07-14 2016-01-27 尼瓦洛克斯-法尔股份有限公司 Flexible timepiece guidance
CN105278310B (en) * 2014-07-14 2017-11-21 尼瓦洛克斯-法尔股份有限公司 Flexible clock and watch guiding piece
US9541902B2 (en) * 2014-07-14 2017-01-10 Nivarox-Far S.A. Flexible timepiece guidance
US20160011567A1 (en) * 2014-07-14 2016-01-14 Nivarox-Far S.A. Flexible timepiece guidance
US9429916B2 (en) 2014-09-26 2016-08-30 Eta Sa Manufacture Horlogere Suisse Isochronous paraxial timepiece resonator
US9477205B2 (en) * 2014-12-18 2016-10-25 The Swatch Group Research And Development Ltd Tuning fork oscillator for timepieces
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
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
CN110780572A (en) * 2018-07-24 2020-02-11 斯沃奇集团研究和开发有限公司 Timepiece oscillator comprising a flexible bearing with a long angular travel
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 (en) * 2018-07-24 2021-09-03 斯沃奇集团研究和开发有限公司 Mechanical timepiece oscillator, and timepiece movement and watch including the same

Also Published As

Publication number Publication date
NL6500662A (en) 1965-07-21
SE319729B (en) 1970-01-19
AT252823B (en) 1967-03-10
CH406984A (en) 1965-09-15
CH58264A4 (en) 1965-09-15
GB1067148A (en) 1967-05-03
BE658495A (en) 1965-05-17
FR1421123A (en) 1965-12-10

Similar Documents

Publication Publication Date Title
US3269106A (en) Mechanical resonator for normal frequency oscillators in time-keepers
US9465363B2 (en) Timepiece oscillator mechanism
US3462939A (en) Mechanical vibrator for timepiece
US3316708A (en) Mechanical resonator for normal frequency oscillators in time measuring device
US9354607B2 (en) Frequency regulation of a timepiece resonator via action on the active length of a balance spring
US4167686A (en) Miniaturized at-cut piezoelectric crystal resonator
US3515914A (en) Mechanical oscillator including a torsion bar
US3170278A (en) Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances
US11422506B2 (en) Resonator for a timepiece comprising two balances arranged to oscillate in the same plane
US3491258A (en) Oscillatory system with two turning mass bodies
US3308361A (en) Electromagnetic vibrator
US3528308A (en) Mechanical resonator of rotation
US3469389A (en) Electromechanical vibrator assembly for a timepiece
US3060334A (en) Mechanical oscillator
US3548585A (en) Flexion-type symmetrical oscillator
US3609419A (en) Mechanical resonators for standard frequency oscillators
US3448304A (en) Vibrator device
US3477223A (en) Frequency standard
US3440815A (en) Escapement device
US3310757A (en) Decoupling mounting plates for tuning fork oscillators
US3501910A (en) Tuning fork arrangement for electromechanical oscillators
US3277643A (en) Electronic watch
US3412549A (en) Mechanical resonator for normal frequency oscillators in timekeepers
US3486049A (en) Mechanical resonator
US3428879A (en) Oscillator device for timepiece mechanisms