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公开(公告)号：US11307535B2
公开(公告)日：2022-04-19
申请号：US16150524
申请日：2018-10-03
Inventor： Alexandre Haemmerli , Francois Gueissaz , Jean-Claude Martin , Lionel Paratte , Yves Winkler , Gianni Di Domenico , Pascal Winkler , Jean-Luc Helfer , Lionel Tombez , Baptiste Hinaux , Donald William Corson , Michel Willemin
IPC: G04B17/06 , G04B17/22 , G04B18/00 , B22C9/00 , B22D15/00 , B22D25/02 , B22D27/04 , C22C14/00 , C22C16/00 , C22C21/00 , C22C38/08 , G04C3/04
Abstract: A process for producing a metal alloy balance wheel by molding, the process including the following steps: a) making a mold in the negative shape of the balance wheel, b) getting hold of a metal alloy that has a thermal expansion coefficient of less than 25 ppm/° C. and is able to be in an at least partly amorphous state when it is heated to a temperature between its glass transition temperature and its crystallization temperature, c) putting the metal alloy into the mold, the metal alloy being heated to a temperature between its glass transition temperature and its crystallization temperature so as to be hot-molded and to form a balance wheel, d) cooling the metal alloy to obtain a balance wheel made of the metal alloy, e) releasing the balance wheel obtained in step d) from its mold.
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12.发明申请公开(公告)号：US20210191334A1
公开(公告)日：2021-06-24
申请号：US17111799
申请日：2020-12-04
Inventor： Gérard Surmely , Matthias Imboden , Lionel Tombez
Abstract: A watch formed by a mechanical movement incorporating a mechanical resonator, including a display displaying the actual time, a correction device formed by a device for detecting the passage of at least one hand through at least one reference time position and by an electronic correction circuit allowing an overall time error for the display to be determined, and a device for braking the mechanical resonator. The correction device is arranged such that it can correct the actual time displayed as a function of the overall time error (loss or gain) previously determined.
For this purpose, the correction device is arranged such that the braking device can act on the mechanical resonator during a correction period to vary the running of the drive mechanism of the display, in order to correct the actual time displayed.-
公开(公告)号：US11846915B2
公开(公告)日：2023-12-19
申请号：US16222124
申请日：2018-12-17
Inventor： Lionel Tombez
Abstract: A timepiece includes a mechanical oscillator and an electromechanical transducer formed by an electromagnetic assembly including a coil and a magnet mounted on the balance of the mechanical oscillator. The induced voltage signal, produced by the electromagnetic transducer during each oscillation, exhibits, in a first half-alternation between the oscillator passes via the neutral position thereof, a first lobe of maximum amplitude having a first polarity and, in a second half-alternation following a passage via the neutral position, a second lobe of maximum amplitude having a second polarity opposite the first. An electric converter includes two power supply capacitors and a device for regulating the medium frequency of the mechanical oscillator. The first power supply capacitor is charged merely with a positive voltage whereas the second capacitor is charged merely with a negative voltage. A load pump is arranged to transfer electric loads between the two capacitors according to a time drift of the mechanical oscillator relative to a time base.
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14.发明授权公开(公告)号：US11619910B2
公开(公告)日：2023-04-04
申请号：US16572996
申请日：2019-09-17
Inventor： Lionel Tombez , Laurent Nagy , Alexandre Haemmerli
Abstract: A timepiece includes a mechanical oscillator, formed by a balance and a piezoelectric balance spring, and a control device for controlling the frequency of the mechanical oscillator. This control device is arranged to be capable of generating time-separated control pulses, each including a momentary decrease in an electrical resistance applied by the control device between two electrodes of the piezoelectric balance spring relative to a nominal electrical resistance. The control device is arranged to be capable of applying a plurality of control pulses during each time of a series of distinct correction times or without interruption in a continuous time window, in order to respectively synchronize the mechanical oscillator at a correction frequency whose value depends on a detected positive or negative temporal drift or at a desired frequency for the mechanical oscillator.
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15.发明授权公开(公告)号：US10386791B2
公开(公告)日：2019-08-20
申请号：US15832909
申请日：2017-12-06
Inventor： Lionel Tombez , Alexandre Haemmerli
Abstract: A mechanical movement timepiece assembly with a mechanical oscillator is formed by a resonator of the balance-hairspring type, and a device for regulating the oscillation frequency thereof using an auxiliary oscillator equipped with a quartz resonator. The regulating device includes a sensor, suitable for detecting the passage of the resonator via the neutral position thereof, a measuring device suitable for measuring, on the basis of position signals supplied by the sensor, a time drift of the mechanical oscillator relative to the auxiliary oscillator, and a device for applying to the resonator mechanical braking pulses when a certain time drift is observed. For this purpose, the resonator has a braking surface which extends over at least a certain sector having a certain length along the oscillation axis and against which a braking member may press in order to momentarily brake the resonator.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20190079460A1
公开(公告)日：2019-03-14
申请号：US16112817
申请日：2018-08-27
Inventor： Alexandre HAEMMERLI , Francois Gueissaz , Lionel Tombez , Bernhard Schnyder , Silvio Dalla Piazza
IPC: G04C3/04
Abstract: A piezoelectric element for an automatic frequency control circuit. The element includes a balance spring formed of a piezoelectric crystal strip, a first electrode connected to the automatic control circuit, and disposed on at least a first side of the strip, and a second electrode connected to the automatic control circuit and disposed on at least a second side of the strip. The first and second electrodes are placed on one portion or over the entire length of the balance spring in a predetermined angular distribution.
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17.发明申请公开(公告)号：US20180181073A1
公开(公告)日：2018-06-28
申请号：US15832909
申请日：2017-12-06
Inventor： Lionel Tombez , Alexandre Haemmerli
CPC classification number: G04C9/04 , G04C3/04 , G04C9/08 , G04C11/084
Abstract: The timepiece assembly comprises a mechanical movement equipped with a mechanical oscillator, formed by a resonator of the balance-hairspring type, and a device for regulating the oscillation frequency thereof using an auxiliary oscillator equipped with a quartz resonator. The regulating device comprises a sensor, suitable for detecting the passage of the resonator via the neutral position thereof, a measuring device suitable for measuring, on the basis of position signals supplied by the sensor, a time drift of the mechanical oscillator relative to the auxiliary oscillator, and a device for applying to the resonator mechanical braking pulses when a certain time drift is observed. For this purpose, the resonator has a braking surface which extends over at least a certain sector having a certain length along the oscillation axis and against which a braking member may press in order to momentarily brake this resonator.
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公开(公告)号：US11868092B2
公开(公告)日：2024-01-09
申请号：US16223159
申请日：2018-12-18
Inventor： Lionel Tombez
Abstract: A timepiece includes a mechanical movement with a mechanical oscillator and an electronic device for regulating the medium frequency of this mechanical oscillator. It includes an electromagnetic transducer and an electric converter which includes a power supply capacitor for powering the regulation circuit. The electromagnetic transducer is arranged to supply a voltage signal exhibiting first voltage lobes in first half-alternations and second voltage lobes in second half-alternations of the oscillations of the mechanical oscillator. The regulating device includes a load pump arranged to store momentarily electric loads which are extracted selectively in different time zones according to a time drift detected in the functioning of the mechanical oscillator relative to an auxiliary oscillator, particularly quartz-based. The electric loads extracted are rendered after a certain delay to the power supply capacitor also according to the time drift detected.
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公开(公告)号：US11809137B2
公开(公告)日：2023-11-07
申请号：US16767778
申请日：2018-12-03
Inventor： Alexandre Haemmerli , Francois Gueissaz , Jean-Claude Martin , Lionel Paratte , Yves Winkler , Gianni Di Domenico , Pascal Winkler , Jean-Luc Helfer , Lionel Tombez , Baptiste Hinaux , Donald William Corson , Michel Willemin
IPC: G04B17/22
CPC classification number: G04B17/227 , G04B17/222
Abstract: A balance for timepieces includes a rim, a hub, and at least one arm connecting the hub to the rim. At least one portion of the balance is made of an at least partially amorphous metal alloy. The at least partially amorphous metal alloy is based on an element chosen from the group consisting of platinum, zirconium and titanium, and has a coefficient of thermal expansion comprised between 7 ppm/° C. and 12 ppm/° C. The balance can be manufactured by moulding. A resonator can include such a balance and a monocrystalline quartz balance spring.
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公开(公告)号：US11687041B2
公开(公告)日：2023-06-27
申请号：US16520402
申请日：2019-07-24
Inventor： Lionel Tombez
CPC classification number: G04C11/081 , G04B17/06
Abstract: A mechanical oscillator, formed of a mechanical resonator and a device for maintaining oscillation, and an auxiliary oscillator forming a reference time base including a synchronisation device arranged to slave the medium frequency of the mechanical oscillator on that of the auxiliary oscillator. The synchronisation device includes an electromagnetic braking device which is formed of a coil and at least one permanent magnet and arranged such that an induced voltage is generated between the terminals of the coil in each alternation of the oscillation of the mechanical resonator. The synchronisation device is arranged to be able to reduce momentarily the impedance between the terminals of the coil during distinct time intervals, any two successive time intervals exhibiting between the respective starts thereof a time distance substantially equal to a positive whole number multiplied by half of a set-point period for the mechanical oscillator.
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