CN112204476A - Timepiece for a timepiece - Google Patents
Timepiece for a timepiece Download PDFInfo
- Publication number
- CN112204476A CN112204476A CN201980019902.0A CN201980019902A CN112204476A CN 112204476 A CN112204476 A CN 112204476A CN 201980019902 A CN201980019902 A CN 201980019902A CN 112204476 A CN112204476 A CN 112204476A
- Authority
- CN
- China
- Prior art keywords
- clutch
- seconds
- pulley
- wheel
- timepiece
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
- G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
- G04F7/08—Watches or clocks with stop devices, e.g. chronograph
- G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
- G04F7/0838—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement involving a tilting movement
-
- 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
- G04B13/00—Gearwork
-
- 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
- G04B35/00—Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
The invention relates to a timepiece for a timepiece, characterized by comprising a chronograph shaft (32) able to carry a chronograph long second hand and on which a chronograph wheel (31) is mounted, and by comprising a second clutch moving member, having a lower seconds clutch wheel (21) able to mesh with a driving seconds wheel (1) of a seconds moving member of a clockwork movement, and an upper seconds clutch wheel (25), said seconds clutch moving member being able to occupy two positions by rotating about a swing axis, this position corresponds to a chronograph engaging configuration in which the upper second clutch pulley (25) of the second clutch moving member is engaged with the chronograph wheel (31) and a disengaging configuration in which said upper second clutch pulley (25) of the second clutch moving member is no longer engaged with the chronograph wheel (31), and is characterized in that at least one of the upper second clutch pulley (25) and the lower second clutch pulley (21) of the second clutch moving member is a gap tension pulley.
Description
The invention relates to a timepiece for a timepiece movement. The invention also relates to a timepiece movement and to a timepiece comprising such a timepiece. The invention finally relates to a clutch of this type for a timepiece movement.
The timepiece chronograph usually includes a clutch to allow its operation and its stop. The operation of the chronograph hands is produced by a complex gear train comprising such clutches. A first technical problem observed in the prior art solutions is that such a complex gear train causes the chronograph hands to flutter. A second technical problem observed in the prior art solutions is the starting jump of the chronograph hands caused by the operation of the clutch, which is reflected in a sudden and violent movement of the chronograph hands following the start of the chronograph. This start jump gives the user the impression of a timer failure.
The object of the present invention is to propose a timepiece that overcomes the above mentioned problems and improves upon the solutions known in the prior art.
More specifically, a first object of the present invention is to propose a timepiece in which the judder of the chronograph hands is reduced or even eliminated.
A second object of the invention is to propose a timepiece which reduces or even eliminates the jump at the start of the chronograph hands.
To this end, the invention relates to a timepiece for a timepiece movement, wherein the timepiece includes a timing shaft capable of carrying a timing seconds hand on which a timing wheel is mounted, and wherein the timepiece includes a seconds clutch disc having a lower seconds clutch wheel capable of meshing with a driving seconds wheel of a seconds disc of the timepiece movement and an upper seconds clutch wheel, the seconds clutch disc being capable of assuming two positions by rotation about a swing axis, the positions corresponding on the one hand to a timepiece engaged configuration in which the upper seconds clutch wheel of the seconds clutch disc meshes with the timing wheel, and on the other hand to a disengaged configuration in which the upper seconds clutch wheel of the seconds clutch disc is no longer meshed with the timing wheel, and wherein at least one of the upper and lower seconds clutch wheels of the seconds clutch disc is a wheel for compensating play.
The seconds clutch plate may include a seconds clutch shaft having both upper and lower seconds clutch wheels disposed thereon and pivotable about a swing axis perpendicular to the seconds clutch shaft positioned at a pivot point therebelow, allowing it to occupy both its engaged and disengaged configurations, respectively.
The upper second clutch pulley may be a pulley for compensating play.
Both the upper and lower seconds clutch pulley of the seconds clutch disc may be pulleys for compensating play.
The seconds clutch shaft of the seconds clutch disc can oscillate between two positions defined by two axes respectively distributed on either side of the vertical axis.
The upper second clutch wheel may be positioned at the upper half of the height of the second clutch shaft of the second clutch disc measured from its axis of oscillation or above the two thirds of the height, inclusive, and the lower second clutch wheel may be positioned at the lower half of the height of the second clutch shaft of the second clutch disc or at the bottom third of the height, inclusive.
The upper second clutch wheel may include a pointed flag-shaped tooth with a rounded end.
The lower second clutch pulley may comprise split teeth for compensating play.
The invention also relates to a timepiece movement, wherein the movement includes a timepiece as described above.
The timepiece movement may include a seconds disc having a driving seconds wheel continuously engaged with a lower seconds clutch wheel of a seconds clutch disc of the timepiece.
The invention also relates to a timepiece, in particular a wristwatch, wherein the timepiece comprises a timepiece as described above.
More specifically, the invention also relates to a clutch for a timepiece movement, comprising the features described above.
These objects, features and advantages of the present invention will be described in detail in the following description of one particular embodiment, given by way of non-limiting example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic cross-sectional view on a plane through the axis of the seconds clutch disc of a timepiece in an engaged position according to one embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of a timepiece in a detached position according to an embodiment of the invention.
Fig. 3 illustrates a view of an upper second clutch pulley of the second clutch disc according to an embodiment of the present invention.
Fig. 4 illustrates a view of a lower second clutch pulley of the second clutch disc according to an embodiment of the present invention.
For the sake of simplicity of description, the vertical direction is conventionally the direction of the axis of rotation of the hands of timepieces and timepieces. The horizontal direction is thus perpendicular to the vertical direction.
A timepiece according to an embodiment of the invention is shown in part in figures 1 and 2. The timepiece comprises a first part having a driving seconds wheel 1 fixed to the seconds disc. The timepiece comprises a third part having a chronograph wheel 31 for driving in rotary motion a chronograph shaft 32 carrying a chronograph second hand, not shown.
The timepiece according to the embodiment also includes a second intermediate member in the form of a swing-type seconds clutch disc. The seconds clutch disc comprises a seconds clutch shaft 22 which can rotate with a small amplitude about a substantially horizontal axis at its lower pivot point 23, i.e. an axis perpendicular to the seconds clutch shaft 22. The upper pivot point 24 thereof can thus take up two positions. In a first position, shown in fig. 1, corresponding to the timer engaged configuration, the seconds clutch shaft 22 is along a first axis C with respect to a vertical axis C1Inclined to the first side and in a second position, shown in figure 2, corresponding to the configuration of disengagement of the chronograph, second clutch shaft 22 is along a second axis C with respect to the vertical axis C2To an opposite second side, with the upper pivot point 24 set to one side. It should be noted that the lower pivot point 23 of the second clutch shaft 22 remains fixed.
The second clutch shaft 22 of the second clutch disk carries two second clutch wheels and continues to rotate. Specifically, the lower seconds clutch wheel 21 is continuously engaged with the seconds wheel 1 so as to rotate it one revolution per minute about its axis B. The upper seconds clutch wheel 25 is intended to cooperate with a chronograph wheel 31: in the chronograph-engaging configuration, it engages with the chronograph wheel 31. The oscillating seconds clutch thus drives the timing wheel 31 in rotation about its axis D. In the disengaged configuration, the seconds clutch shaft 22 is tilted in a direction to move the upper seconds clutch wheel 25 away from the timing wheel 31 so that their respective teeth no longer intermesh. In this disengaged configuration, seconds clutch shaft 22 no longer drives chronograph wheel 31 in rotation and no longer rotates the chronograph seconds hand.
The second clutch disc thus becomes the clutch for the timer. Which can be operated by rotation of second clutch lever 4 about its axis a during various functions of the timepiece (for example start, stop).
Fig. 3 shows in particular the upper seconds clutch wheel 25 of the seconds clutch disc. It is positioned substantially at the upper two thirds of the height of the seconds clutch shaft 22 and is generally located in the upper half of the height of the seconds clutch shaft 22, especially above (including) the top two thirds of the height, as measured from its lower axis of rotation. According to the present embodiment, the upper second clutch pulley 25 is a pulley for compensating for backlash. Which includes teeth in the form of resilient flag spikes 26. Each resilient flag-tip 26 is in the form of a resilient blade extending rearwardly with respect to the direction of rotation of the wheel. Such a blade has a small curvature with its centre of curvature on one side of the gear. Each tip flag also has a rounded end 27. The rounded end can be considered as a small sphere whose center is not in the extension of the pointy part 26, but is in front of the extension. These teeth 26 in the form of elastic sharp flags with rounded ends 27 cooperate with conventional triangular teeth belonging to a chronograph wheel 31. This geometry of the teeth of the upper seconds clutch wheel 25 allows it to engage smoothly with the chronograph wheel to compensate for the oscillating movement or slight rotation of the seconds clutch shaft 22 by a few degrees, facilitating a gentle engagement. Each end 27 is positioned itself between two triangular teeth and its rounded shape allows it not to strike the tops of the teeth of the chronograph wheel but to insert itself between the two tops of the two teeth by sliding in a continuous motion. The resilience of the flag tip allows deep engagement between the roots of the sets of teeth to eliminate any backlash and to solve any lack of concentricity of the discs. Furthermore, it is important to provide a large number of teeth on the timing wheel, for example a number greater than 180.
Fig. 4 particularly shows the lower seconds clutch pulley 21 of the seconds clutch disc. It is positioned substantially at the upper third of the height of the seconds clutch shaft or at the bottom third of the height, inclusive, and is generally in the lower half of the height of the seconds clutch shaft 22, measured from its lower axis of rotation. This close location to the axis of rotation allows a small movement of the lower second clutch pulley 21, which can be considered a small translational movement. Due to this small translational movement when the seconds clutch disc is oscillated, the intermeshing between the fixed seconds wheel 1 and the lower seconds clutch wheel 21 is not significantly disturbed and operation of the clutch function is not generated or, indeed, a start jump of the chronograph hands is not generated, unlike what occurs with the prior art horizontal clutch engagement. In addition, the intermeshing between the seconds wheel 1 and the lower seconds clutch wheel 21 at engagement only varies slightly, which solution, in cooperation with the use of a toothing for compensating play, is advantageous in reducing or even eliminating any rattling of the chronograph hand. Therefore, according to the present embodiment, the lower second clutch pulley 21 is a pulley for compensating for backlash. It comprises a split tooth 28 formed by two resilient blades distributed on either side of the opening. It should be noted that the use of a gear for compensating play amplifies the kick-off effect in the case where the clutch may cause a large movement of the lower seconds clutch wheel 21 relative to the seconds wheel 1 (as in the case of the horizontal clutch of the prior art).
It is therefore evident that the use of a second clutch disc, which provides a clutch function by a small rotation or oscillation about an axis, combined with the use of one or more wheels for compensating play, allows to greatly reduce, or even eliminate, any jerks and any run-out.
Of course, the invention is not limited to the described embodiments. In particular, the two seconds clutch wheels 21, 25 may have other geometries as long as the play compensation function is achieved. For example, the play compensation can be achieved by means of elastic arms associated with the rims, the teeth thus being able to adopt a traditional shape.
According to another embodiment, not shown, the clutch may be provided with only one of the two wheels comprising teeth with play-compensating profiles, which already enables an improved operation of the timepiece, in particular in terms of the start run-out.
The timepiece according to the embodiment is for a timepiece movement and for a timepiece. The timepiece is, for example, a watch, in particular a wristwatch. The timepiece may include a mechanical timepiece movement. For example, the timepiece movement is of the manual winding or automatic winding type.
The clutch mechanism has been described in the above embodiments within a timepiece movement timepiece. In general, however, this mechanism may be implemented to form a clutch between any two of the wheels of a timepiece movement. The invention therefore also relates to a clutch for a timepiece movement, wherein the clutch comprises a clutch disc having a lower clutch wheel that can be brought into engagement with a first driving wheel of a first disc of the timepiece movement and an upper clutch wheel, the clutch disc being able to occupy two positions by rotation about a swing axis, which positions correspond, on the one hand, to a clutch-engaged configuration in which the upper clutch wheel of the clutch disc can be brought into engagement with a second wheel of a second disc of the timepiece movement and, on the other hand, to a disengaged configuration in which said upper clutch wheel of the clutch disc can no longer be brought into engagement with the second wheel of the second disc of the timepiece movement, and wherein at least one of the upper and lower clutch wheels of the clutch disc is a wheel for compensating play. Such a clutch may include all or some of the features described above in relation to the second clutch for the timer.
Claims (11)
1. A timepiece for a timepiece movement, wherein the timepiece comprises a timing shaft (32) able to carry a chronograph seconds hand fitted with a timing wheel (31), and wherein the timepiece comprises a seconds clutch disc having: a lower second clutch wheel (21) capable of meshing with a second driving wheel (1) of a second dial of a clock movement; and an upper seconds clutch pulley (25) able to occupy two positions by rotating about a swing axis, said positions corresponding on the one hand to a timer-engaged configuration in which the upper seconds clutch pulley (25) of the seconds clutch pulley is engaged with the timing wheel (31) and on the other hand to a disengaged configuration in which the upper seconds clutch pulley (25) of the seconds clutch pulley is no longer engaged with the timing wheel (31), wherein at least one of the upper seconds clutch pulley (25) and the lower seconds clutch pulley (21) of the seconds clutch pulley is a pulley for compensating play, and wherein the seconds clutch pulley comprises a seconds clutch shaft (22) on which both the upper seconds clutch pulley (25) and the lower seconds clutch pulley (21) are disposed and which is able to pivot about a swing axis perpendicular to the seconds clutch shaft (22) positioned at a lower pivot point (23) thereof, allowing it to occupy both its engaged and disengaged configurations respectively.
2. Chronograph (1) according to claim 1, wherein the upper seconds clutch wheel (25) is a wheel for compensating play.
3. Chronograph (1) according to any of the previous claims, wherein the upper second clutch pulley (25) and the lower second clutch pulley (21) of the second clutch disc are both pulleys for compensating play.
4. Chronograph (1) according to any of the previous claims, wherein the seconds clutch shaft (22) of the seconds clutch disc is comprised of two axes (C) distributed on either side of a vertical axis (C)1，C2) Between two defined positions.
5. Chronograph (1) according to any of the previous claims, wherein the upper seconds clutch wheel (25) is positioned at or above and contains the upper half of the height of the seconds clutch shaft (22) of the seconds clutch disc, measured from its axis of oscillation, and/or wherein the lower seconds clutch wheel (21) is positioned at the lower half of the height of the seconds clutch shaft (22) of the seconds clutch disc or at and contains the bottom one third of the height.
6. Chronograph (1) according to any of the previous claims, wherein the upper seconds clutch wheel (25) comprises a pointy tooth (26) with rounded ends (27).
7. Chronograph (1) according to any of the previous claims, wherein the lower seconds clutch wheel (21) comprises split teeth (28) for compensating play.
8. A timepiece movement, wherein the timepiece movement includes a timepiece according to any one of the preceding claims.
9. A timepiece movement according to claim 8, wherein the timepiece movement includes a seconds disc having a driving seconds wheel (1) in continuous mesh with the lower seconds clutch wheel (21) of the seconds clutch disc of the timepiece.
10. Timepiece, in particular wristwatch, wherein the timepiece comprises a timepiece according to any one of claims 1-7.
11. A clutch for a timepiece movement, wherein the clutch includes a clutch plate having: a lower clutch wheel engageable with a first drive wheel of a first disk of a timepiece movement; and an upper clutch pulley, which can take up two positions by rotating about an axis of oscillation, said positions corresponding on the one hand to a clutch-engaged configuration in which said upper clutch pulley of said clutch pulley can engage with a second pulley of a second disk of said timepiece movement and on the other hand to a disengaged configuration in which said upper clutch pulley of said clutch pulley can no longer engage with said second pulley of said second disk of said timepiece movement, and wherein at least one of said upper clutch pulley and said lower clutch pulley of said clutch pulley is a pulley for compensating play.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00347/18 | 2018-03-19 | ||
| CH00347/18A CH714798B1 (en) | 2018-03-19 | 2018-03-19 | Chronograph mechanism for a timepiece. |
| PCT/EP2019/056129 WO2019179824A1 (en) | 2018-03-19 | 2019-03-12 | Chronograph for a timepiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112204476A true CN112204476A (en) | 2021-01-08 |
| CN112204476B CN112204476B (en) | 2022-09-27 |
Family
ID=61971874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980019902.0A Active CN112204476B (en) | 2018-03-19 | 2019-03-12 | Timepiece for a timepiece |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3769164B1 (en) |
| JP (1) | JP7269949B2 (en) |
| CN (1) | CN112204476B (en) |
| CH (1) | CH714798B1 (en) |
| WO (1) | WO2019179824A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4092491A1 (en) * | 2021-05-19 | 2022-11-23 | Patek Philippe SA Genève | Timepiece movement with clutch |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003040835A2 (en) * | 2001-11-09 | 2003-05-15 | Manufacture Roger Dubuis Sa | Timepiece having a non-circular movement provided with a chronograph |
| CN1549956A (en) * | 2001-08-30 | 2004-11-24 | Isa瑞士股份有限公司 | Clutch device for timepiece |
| CN101566825A (en) * | 2008-04-21 | 2009-10-28 | 劳力士有限公司 | Gear with backlash compensation for a timepiece mechanism |
| EP2821862A2 (en) * | 2013-07-04 | 2015-01-07 | Manufacture La Joux-Perret SA | Timepiece |
| CH709162A2 (en) * | 2014-01-20 | 2015-07-31 | Bethune Sa De | Clutch device for watch movement. |
| EP2945029A1 (en) * | 2014-05-15 | 2015-11-18 | Patek Philippe SA Genève | Chronograph locking device (Device for a clock piece) |
| CN107561914A (en) * | 2016-07-01 | 2018-01-09 | 蒙特雷布勒盖股份有限公司 | Include the clock and watch of the device for switching time movement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH288211A (en) * | 1950-12-15 | 1953-01-15 | Le Coultre & Cie | Chronograph watch movement. |
| JP2001349966A (en) * | 2001-04-09 | 2001-12-21 | Seiko Epson Corp | Pointer type portable watch |
| EP1445669A1 (en) * | 2003-02-10 | 2004-08-11 | Richemont International S.A. | Constant force escapement mechanism for a timepiece with indirect seconds |
| EP1555584A1 (en) * | 2004-01-13 | 2005-07-20 | Rolex S.A. | Toothed wheel for the removal of play, gear, and the use of this gear |
| EP3032358B1 (en) * | 2014-12-12 | 2020-10-07 | Richemont International S.A. | Chronograph mechanism for a clock movement |
-
2018
- 2018-03-19 CH CH00347/18A patent/CH714798B1/en unknown
-
2019
- 2019-03-12 WO PCT/EP2019/056129 patent/WO2019179824A1/en unknown
- 2019-03-12 EP EP19712150.2A patent/EP3769164B1/en active Active
- 2019-03-12 CN CN201980019902.0A patent/CN112204476B/en active Active
- 2019-03-12 JP JP2020550662A patent/JP7269949B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549956A (en) * | 2001-08-30 | 2004-11-24 | Isa瑞士股份有限公司 | Clutch device for timepiece |
| WO2003040835A2 (en) * | 2001-11-09 | 2003-05-15 | Manufacture Roger Dubuis Sa | Timepiece having a non-circular movement provided with a chronograph |
| CN101566825A (en) * | 2008-04-21 | 2009-10-28 | 劳力士有限公司 | Gear with backlash compensation for a timepiece mechanism |
| EP2821862A2 (en) * | 2013-07-04 | 2015-01-07 | Manufacture La Joux-Perret SA | Timepiece |
| CH709162A2 (en) * | 2014-01-20 | 2015-07-31 | Bethune Sa De | Clutch device for watch movement. |
| EP2945029A1 (en) * | 2014-05-15 | 2015-11-18 | Patek Philippe SA Genève | Chronograph locking device (Device for a clock piece) |
| CN107561914A (en) * | 2016-07-01 | 2018-01-09 | 蒙特雷布勒盖股份有限公司 | Include the clock and watch of the device for switching time movement |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7269949B2 (en) | 2023-05-09 |
| EP3769164B1 (en) | 2023-10-25 |
| CH714798B1 (en) | 2022-03-31 |
| EP3769164A1 (en) | 2021-01-27 |
| CH714798A1 (en) | 2019-09-30 |
| JP2021518538A (en) | 2021-08-02 |
| WO2019179824A1 (en) | 2019-09-26 |
| CN112204476B (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5220541A (en) | Watch movement having a chronograph module adapted on a motor module | |
| US9213314B2 (en) | Two-directional date corrector mechanism for a date mechanism, date mechanism, timepiece | |
| JP5483781B2 (en) | Mechanism for displaying and correcting two different time measurable quantities | |
| US8500323B2 (en) | Timepiece including a high frequency mechanical movement | |
| JP7181330B2 (en) | Display mechanism for timepiece with elastic hands | |
| US8625395B2 (en) | Striking mechanism with distinct strikes | |
| US9058020B2 (en) | Mechanism for advancing a karussel cage by periodic jumps | |
| US20130194900A1 (en) | Mechanism for advancing a karussel cage or tourbillon cage by periodic jumps | |
| CN108693762B (en) | Timepiece with digital time display | |
| CN109313412B (en) | Mechanism for watch movement | |
| CN112204476B (en) | Timepiece for a timepiece | |
| CN109960131B (en) | Torque smoothing device for a timepiece, in particular with a striking mechanism | |
| US7717616B2 (en) | Timepiece with an hour hand able to be moved forward or backward by one hour step | |
| CN110275421A (en) | Clock and watch jump indication mechanism through what is adjusted | |
| JP6499780B2 (en) | Movement with power reserve extension | |
| US8353623B2 (en) | Timepiece movement including a karussel | |
| JP2013507626A (en) | Clock with date system | |
| CN112368648A (en) | Escapement mechanism with a locking lever and timepiece with such an escapement mechanism | |
| CN103064276B (en) | Double-eccentric mechanical watch | |
| WO2020201918A1 (en) | Clock with settable frequency | |
| CN202331024U (en) | Double-eccentric mechanical watch | |
| CH702354A2 (en) | Timepiece i.e. wristwatch, has barrel maintaining oscillations of regulating devices, where energy required to drive gear-train actuating display is delivered by another barrel, and mechanism regulating gear-train from regulating devices | |
| JP4548805B2 (en) | Compensation device for the synergistic effect of watches called mysteries | |
| CN107630978B (en) | Self-locking gear set | |
| CN201141993Y (en) | Flywheel structure of watch speed-adjusting gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |