EP1837718B1 - Escapement device for a timepiece movement - Google Patents
Escapement device for a timepiece movement Download PDFInfo
- Publication number
- EP1837718B1 EP1837718B1 EP20060005703 EP06005703A EP1837718B1 EP 1837718 B1 EP1837718 B1 EP 1837718B1 EP 20060005703 EP20060005703 EP 20060005703 EP 06005703 A EP06005703 A EP 06005703A EP 1837718 B1 EP1837718 B1 EP 1837718B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blocking lever
- impulse
- balance
- escape wheel
- segment
- 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.)
- Not-in-force
Links
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 2
- 229910052594 sapphire Inorganic materials 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 10
- 239000002969 artificial stone Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 239000010437 gem Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 230000001174 ascending effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
- G04B17/285—Tourbillons or carrousels
-
- 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
- G04B15/00—Escapements
- G04B15/06—Free escapements
Definitions
- the subject of the present invention is an escapement device for a watch movement, in particular for a wristwatch or a pocket watch, the clockwork movement possibly comprising a tourbillon or not.
- the object of the invention is to provide a simple manufacturing exhaust device, to reduce shocks and friction to increase the efficiency and reduce or eliminate the lubrication of the device.
- the exhaust system according to the present invention is distinguished by the features listed in claim 1.
- the exhaust device according to the invention in its embodiment illustrated by way of example with Figures 1 to 9 of the attached drawing comprises a rocker 1 connected to a pivot axis 3 by arms 2.
- the rocker shaft 3 carries a plate 4 provided with a pulse lift 5 extending substantially radially and whose end overflows with the periphery of the plateau 4.
- This plate 4 further comprises near its periphery a release pin 6 extending perpendicularly to the plane of the plate 4 in the direction opposite to the balance 1.
- a spiral spring 7 is fixed by its inner end to the balance shaft 3 and its outer end 7a to a stud 8 fixed on a bridge or the plate of the movement (not shown) or on the cage of a whirlwind if exhaust is mounted in a whirlpool.
- the axis of the balance 3 is pivoted between a bridge and the plate of the movement or between the cage and a bridge of a tourbillon.
- the exhaust device further comprises an escape wheel 11 and its pinion 12 pivoted between the plate and a bridge of the movement and positioned such that each tooth of the escape wheel 11 can be placed on the path of the pulse lift 5 to give the pulses to the balance 1.
- the exhaust device further comprises a blocker 13 pivoted between the movement plate and a star bridge 14.
- This blocker 13 comprises a release lever 15 extending towards the plate 4 and can be actuated by the release pin 6 of this tray 4.
- the blocker 13 also comprises a rest ellipse 16 having the general shape of a cylinder provided with a plate 16a and extending perpendicularly to the plane of the blocker 13, the ellipse comprises a first part or end extending in the opposite direction the pendulum and a second portion or end extending in the direction of the pendulum.
- the rest ellipse 16 is constructed of sapphire.
- the ends of this rest ellipse are pivoted in fixed bearings 17, one carried by the star bridge 14 and the other by the platen of the movement.
- the star bridge 14 comprises two stops 18, 18a making it possible to limit the angular displacements of the blocker 13.
- the exhaust device further comprises a positioning arm 19 whose free end cooperates with the plane face 16a of the rest ellipse 16 and more particularly with the first part or end of the rest ellipse, to hold the blocker 13 in neutral position of rest.
- This positioning arm 19 is pivoted on the platen of the movement and subjected to the action of a spiral return spring 20 tending to apply its free end against the flat face 16a of the rest ellipse 16.
- the restoring force of this spiral return spring 20 is weak, just sufficient to replace the blocker 13 in its neutral position after it has been angularly displaced by the release pin 10 of the plate 4 coming into contact with the release lever 15 of the blocker during the pendulum oscillations 1.
- FIGS. 2a and 2b illustrate the exhaust device at the moment when the balance 1 having completed its upward stroke, reverses its direction of rotation and starts its downward stroke for which it moves in the counterclockwise direction following the arrow F1. While the rocker 1 describes the additional arc in the downward period of the alternation, the escape wheel 11 is stopped by one of its teeth which is pressed against the cylindrical portion of the rest ellipse 16 of the blocker 13 and more particularly against the second part or end of the rest ellipse which is in its neutral rest position. The blocker 13 is held in this rest position by the arm 19 whose free end is applied against the flat face 16a of the rest ellipse 16 of the blocker 13.
- This arm 19 exerts a pressure, the lowest possible, thanks to the hairspring 20 fixed on the axis of rotation of the arm 19.
- the torque exerted by this spiral spring 20 on the arm 19 is adjustable with a mobile peg holder on the plate to which is fixed the other end of the spring 19.
- the release pin 6 is integral with the balance 1 by its driving on the plate 4, perpendicular to the pulse lift 5 and angularly offset relative thereto.
- the rocker 1 thus moves in the counter-clockwise direction to the so-called "blow-blow” phase illustrated in FIGS. Figures 3a, 3b and 4a, 4b .
- the release pin 6 touches the end of the release lever 15 of the blocker 13 which causes a slight movement of the blocker 13 only in the clockwise direction.
- the escape wheel 11 does not undergo any geometric recoil during this phase of the "lost blow” because it rests with one of its teeth on the cylindrical portion of the rest ellipse 16 of the blocker 13 which is concentric with the axis This causes only a very low friction between a tooth of the escape wheel 11 and the rest ellipse 16 of the blocker 13.
- the pendulum 1 continues its downward movement then stops and begins its ascending phase clockwise along the arrow F2 to the position illustrated in FIGS. Figures 5a and 5b .
- the release pin 6 comes into contact with the release lever 15 of the blocker 13 which has repositioned in the rest position under the action of the arm 19.
- the release pin 6 moves the blocker counterclockwise and simultaneously lifting pulse 5 is placed on the path of a tooth of the escape wheel 11.
- the stroke in the counterclockwise direction of the blocker 13 is stopped by the abutment 18a of the star bridge 14 and at this moment the tooth of the escape wheel 11 leaves the cylindrical wall 16 of the rest ellipse 16 which is thus released ( FIGS. 6a, 6b and 7a, 7b ).
- the escape wheel 11 is thus released thanks to the flat face 16a of the rest ellipse 16 of the blocker.
- another tooth of the escape wheel 11 collides with the pulse lift 5 of the plate 4 driven on the axis 3 of the balance 1, ( figure 8 ).
- the arm 19 of the blocker 13 reposition the blocker 13 in the neutral rest position to allow the next tooth, the one that gave the impulse, of the escape wheel 11 to stop against the cylindrical peripheral surface. of the rest ellipse 16 of the blocker 13.
- this escapement device is a free escapement since it leaves the balance with complete freedom to traverse the additional arcs with the functions of the escapement. It is also a direct impulse escapement because it does not include an intermediate energy transmission system as is the case for anchor escapements.
- the four bodies of this exhaust system are:
- the plate 4 integral with the balance 1, with the pulse pallet 5 and the release pin 6.
- the impetus given by the escape wheel 11 is directly transmitted to the balance 1. This makes it possible to reduce shocks and friction and thus to increase the efficiency. This escapement also has the distinction of transmitting only one pulse per complete cycle (two alternations).
- the peripheral surface of the rest ellipse 16 could have various shapes provided that it comprises a first portion to stop the teeth of the escape wheel when the blocker 13 is in certain positions and a second portion to release the teeth of the escape wheel when the blocker 13 is in other positions as described above.
- the first portion is rounded and it is all the more preferable that it be cylindrical so that the friction between a tooth of the escape wheel and the ellipse when the blocker rotates is very low.
- the second portion of the peripheral surface of the rest ellipse 16 is flat.
- the peripheral surface of the first end of the ellipse must include a portion (preferably flat once more) to properly cooperate with the positioning arm 19 in the manner described above.
- FIGs 10 to 13 represent by way of example, the exhaust device described above mounted in a tourbillon cage whose center of rotation is on the axis of the blocker 13 and not on the axis of the balance 1.
- figure 11 is a section of the vortex showing the principle of inverted pivoting of the blocker on a fixed pivot.
- the figure 12 is a top view of the tourbillon cage while the figure 13 is a view from below where we see the drive of the cage performed by an internal toothing performed on the second fixed wheel 21.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Operated Clutches (AREA)
Description
La présente invention a pour objet un dispositif d'échappement pour mouvement d'horlogerie, notamment pour montre bracelet ou de poche, le mouvement d'horlogerie pouvant comporter un tourbillon ou non.The subject of the present invention is an escapement device for a watch movement, in particular for a wristwatch or a pocket watch, the clockwork movement possibly comprising a tourbillon or not.
Un exemple de dispositif d'échappement est divulgué dans le document
Le but de l'invention est de proposer un dispositif d'échappement de fabrication simple, permettant de diminuer les chocs et les frottements pour augmenter le rendement et de réduire ou supprimer la lubrification du dispositif.The object of the invention is to provide a simple manufacturing exhaust device, to reduce shocks and friction to increase the efficiency and reduce or eliminate the lubrication of the device.
Le dispositif d'échappement selon la présente invention se distingue par les caractéristiques énumérées à la revendication 1.The exhaust system according to the present invention is distinguished by the features listed in
Le dessin annexé illustre schématiquement et à titre d'exemple une forme d'exécution du dispositif d'échappement selon l'invention.
- La
figure 1a est une vue en perspective de dessus du dispositif d'échappement. - La
figure 1b est une vue en perspective de dessous du dispositif d'échappement. - La
figure 2a représente le dispositif d'échappement dans la phase de l'arc supplémentaire dans la période descendante du balancier. - La
figure 2b est un détail à plus grande échelle de lafigure 2a . - La
figure 3a représente le dispositif d'échappement dans la phase dite du "coup perdu". - La
figure 3b est un détail à plus grande échelle de lafigure 3a . - La
figure 4a illustre le déplacement dans le sens horaire du bloqueur. - La
figure 4b est un détail à plus grande échelle de lafigure 4a . - La
figure 5a représente le dispositif d'échappement dans la phase de l'arc supplémentaire dans la phase ascendante qui précède le dégagement. - La
figure 5b est un détail à plus grande échelle de lafigure 5a . - La
figure 6a représente le dispositif d'échappement dans la phase de dégagement. - La
figure 6b est un détail à plus grande échelle de lafigure 6a . - La
figure 7a représente le dispositif d'échappement entre la phase de dégagement et la phase d'impulsion. - La
figure 7b est un détail à plus grande échelle de lafigure 7a . - La
figure 8 représente le dispositif d'échappement dans la phase d'impulsion. - La
figure 9a représente le dispositif d'échappement dans la phase terminale d'impulsion. - La
figure 9b est un détail à plus grande échelle de lafigure 9a . - Les
figures 10 à 13 illustrent le dispositif d'échappement monté dans une cage de tourbillon. - Les
figures 14 à 17 illustrent les différents sous-ensembles formant les parties constitutives du dispositif d'échappement.
- The
figure 1a is a perspective view from above of the exhaust system. - The
figure 1b is a perspective view from below of the exhaust device. - The
figure 2a represents the exhaust device in the phase of the additional arc in the downward period of the pendulum. - The
figure 2b is a larger-scale detail of thefigure 2a . - The
figure 3a represents the exhaust device in the so-called "lost blow" phase. - The
figure 3b is a larger-scale detail of thefigure 3a . - The
figure 4a illustrates the clockwise movement of the blocker. - The
figure 4b is a larger-scale detail of thefigure 4a . - The
figure 5a represents the exhaust device in the phase of the additional arc in the ascending phase preceding the clearance. - The
figure 5b is a larger-scale detail of thefigure 5a . - The
figure 6a represents the exhaust device in the disengagement phase. - The
figure 6b is a larger-scale detail of thefigure 6a . - The
figure 7a represents the exhaust device between the disengagement phase and the pulse phase. - The
figure 7b is a larger-scale detail of thefigure 7a . - The
figure 8 represents the exhaust device in the pulse phase. - The
figure 9a represents the exhaust device in the terminal pulse phase. - The
figure 9b is a larger-scale detail of thefigure 9a . - The
Figures 10 to 13 illustrate the exhaust system mounted in a tourbillon cage. - The
Figures 14 to 17 illustrate the different subsets forming the constituent parts of the exhaust system.
Le dispositif d'échappement selon l'invention, dans sa forme d'exécution illustrée à titre d'exemple aux
Ce plateau 4 comporte encore à proximité de sa périphérie une goupille de dégagement 6 s'étendant perpendiculairement au plan du plateau 4 en direction opposée au balancier 1.This
Un ressort spiral 7 est fixé par son extrémité intérieure à l'axe de balancier 3 et par son extrémité extérieure 7a à un piton 8 fixé sur un pont ou la platine du mouvement (non illustré) ou sur la cage d'un tourbillon si l'échappement est monté dans un tourbillon. L'axe du balancier 3 est pivoté entre un pont et la platine du mouvement ou entre la cage et un pont d'un tourbillon.A
Le dispositif d'échappement comporte encore une roue d'échappement 11 et son pignon 12 pivoté entre la platine et un pont du mouvement et positionné de telle façon que chaque dent de la roue d'échappement 11 puisse être placée sur le chemin de la levée d'impulsion 5 pour donner les impulsions au balancier 1.The exhaust device further comprises an
Le dispositif d'échappement comporte encore un bloqueur 13 pivoté entre la platine du mouvement et un pont étoqueaux 14. Ce bloqueur 13 comporte une levée de dégagement 15 s'étendant en direction du plateau 4 et susceptible d'être actionné par la goupille de dégagement 6 de ce plateau 4.The exhaust device further comprises a
Le bloqueur 13 comporte encore une ellipse de repos 16 présentant la forme générale d'un cylindre muni d'un plat 16a et s'étendant perpendiculairement au plan du bloqueur 13, l'ellipse comprend une première partie ou extrémité s'étendant en direction opposée au balancier et une seconde partie ou extrémité s'étendant en direction du balancier. De préférence, l'ellipse de repos 16 est construite en saphir. Les extrémités de cette ellipse de repos sont pivotées dans des paliers fixes 17, l'un porté par le pont étoqueaux 14 et l'autre par la platine du mouvement. Le pont étoqueaux 14 comporte deux butées 18, 18a permettant de limiter les déplacements angulaires du bloqueur 13.The
Le dispositif d'échappement comporte encore un bras de positionnement 19 dont l'extrémité libre coopère avec la face plane 16a de l'ellipse de repos 16 et plus particulièrement avec la première partie ou extrémité de l'ellipse de repos, pour maintenir le bloqueur 13 en position neutre de repos. Ce bras de positionnement 19 est pivoté sur la platine du mouvement et soumis à l'action d'un ressort de rappel spiral 20 tendant à appliquer son extrémité libre contre la face plane 16a de l'ellipse de repos 16. La force de rappel de ce ressort spiral de rappel 20 est faible, juste suffisante pour replacer le bloqueur 13 dans sa position neutre après qu'il aie été déplacé angulairement par la goupille de dégagement 10 du plateau 4 entrant en contact avec la levée de dégagement 15 du bloqueur lors des oscillations du balancier 1.The exhaust device further comprises a
Les
La goupille de dégagement 6 est solidaire du balancier 1 grâce à son chassage sur le plateau 4, perpendiculairement à la levée d'impulsion 5 et décalée angulairement par rapport à celle-ci.The
Le balancier 1 se déplace ainsi dans le sens anti-horaire jusqu'à la phase dite du "coup perdu" illustrée aux
Le balancier 1 poursuit sa course descendante puis s'immobilise et commence sa phase ascendante en sens horaire suivant la flèche F2 jusqu'à la position illustrée aux
La roue d'échappement 11 est ainsi libérée grâce à la face plane 16a de l'ellipse de repos 16 du bloqueur. Au même moment une autre dent de la roue d'échappement 11 percute la levée d'impulsion 5 du plateau 4 chassé sur l'axe 3 du balancier 1, (
L'oscillation ascendante du balancier 1 peut alors se terminer et celui-ci arrive à nouveau dans la position illustrée aux
En cas de choc et/ou durant la phase du "coup perdu" ou de "l'impulsion" le déplacement angulaire du bloqueur 13 est limité par les butées 18, 18a du pont étoquaux 14 ce qui empêche que le bras 19 ne puisse prendre appui sur la partie cylindrique de la périphérie de l'ellipse de repos 16.In the event of an impact and / or during the phase of the "lost blow" or "momentum", the angular displacement of the
De ce qui précède, on voit que ce dispositif d'échappement est un échappement libre puisqu'il laisse au balancier une liberté entière pour parcourir les arcs supplémentaires aux fonctions de l'échappement. Il s'agit également d'un échappement à impulsion directe car il ne comporte pas de système de transmission d'énergie intermédiaire comme c'est le cas pour les échappements à ancre.From the foregoing, it can be seen that this escapement device is a free escapement since it leaves the balance with complete freedom to traverse the additional arcs with the functions of the escapement. It is also a direct impulse escapement because it does not include an intermediate energy transmission system as is the case for anchor escapements.
Les quatre organes de ce dispositif d'échappement sont :The four bodies of this exhaust system are:
La roue d'échappement 11.The
Le plateau 4, solidaire du balancier 1, avec la palette d'impulsion 5 et la goupille de dégagement 6.The
Le bras 19 du bloqueur, etThe
Le bloqueur 13 et sa levée de dégagement 15.The
L'impulsion donnée par la roue d'échappement 11 est directement transmise au balancier 1. Cela permet de diminuer les chocs et les frottements et de ce fait d'augmenter le rendement. Cet échappement a aussi la particularité de ne transmettre qu'une seule impulsion par cycle complet (deux alternances).The impetus given by the
Il est à noter que la surface périphérique de l'ellipse de repos 16 (et en particulier sa seconde extrémité) pourrait avoir des formes diverses à condition qu'elle comprenne une première portion pour arrêter les dents de la roue d'échappement quand le bloqueur 13 est dans certaines positions et une seconde portion pour libérer les dents de la roue d'échappement quand le bloqueur 13 est dans d'autres positions comme décrit ci-dessus. De préférence, la première portion est arrondie et il est d'autant plus préférable qu'elle soit cylindrique afin que le frottement entre une dent de la roue d'échappement et l'ellipse quand le bloqueur tourne soit très faible. Il est également préférable que la seconde portion de la surface périphérique de l'ellipse de repos 16 soit plate. Bien sûr, la surface périphérique de la première extrémité de l'ellipse doit comprendre une portion (de préférence plate encore une fois) pour coopérer de façon appropriée avec le bras de positionnement 19 de la manière décrite ci-dessus.It should be noted that the peripheral surface of the rest ellipse 16 (and in particular its second end) could have various shapes provided that it comprises a first portion to stop the teeth of the escape wheel when the
Ces particularités font, comme l'expérience l'a démontré sur un prototype, que ce dispositif d'échappement peut fonctionner sans lubrifiant.These features make, as experience has shown on a prototype, that this exhaust system can operate without lubricant.
Les
Claims (11)
- Escapement device, including :- an escape wheel set formed by an escape wheel (11) and an escape pinion (12);- a balance shaft (3) integral on the one hand with a balance (1) and on the other hand with a plate (4);- an impulse pallet (5) integral with plate (4) and adapted to cooperate directly with the teeth of the escape wheel (11) so as to impart one impulse per cycle to the balance (1);- a blocking lever (13) integral with an impulse pin (16) serving it as the pivoting shaft, this impulse pin (16) having, extending perpendicularly to the plan of the said blocking lever (13), a first end extending in the opposite direction of the balance and a second end extending towards the balance, this impulse pin (16) presenting a peripheral surface with a first and a second (16a) segment, the first segment, serving as support for a tooth of the escape wheel (11) against the second end of the impulse pin (16), outside the impulse phases; the blocking lever (13) having an unlocking pallet (15) cooperating with an unlocking pin (6) integral with plate (4) and extending in a direction perpendicular to the plate;- and a positioning arm (19) mounted so as to pivot, and subject to the effect of a return spring (20) the free end of which cooperates with the second segment (16a) of the peripheral surface of the impulse pin (16) and with the first end at the blocking lever (13) tending to place the blocking lever in its neutral rest position.
- Escapement device according to claim 1, characterized in that the impulse pin (16) and the unlocking pallet (15), both sitting on the blocking lever (13), as well as the impulse pallet (5) sitting on plate (4) are made of sapphire or of precious or synthetic stone.
- Escapement device according to claim 1 or claim 2, characterized in that the return spring (20) of the positioning arm (19) is a helical spring having one end fixed to the pivoting shaft of arm (19), and the other end integral with a fixed stud that can be adjusted so as to allow the restoring force to be adjusted.
- Escapement device of one of the preceding claims, characterized in that the blocking lever (13) is pivoted on a banking bridge (14) including two bankings (18, 18a) limiting the angular displacements of the blocking lever (13).
- Escapement device of one of the preceding claims, characterized in that the escape wheel (11) is adapted to turn in successive steps, always in the same direction and without any move back during the full functioning cycle of the escapement, its teeth in succession resting against the first segment of the peripheral surface of the impulse pin (16).
- Escapement device of one of the preceding claims, characterized in that the pivoting shafts of the balance (1), escape wheel (11), blocking lever (13), and positioning arm (19) are mutually parallel.
- Escapement device of one of the preceding claims, characterized in that it is mounted into the cage of a tourbillon.
- Device of one of the preceding claims, characterized in that the first segment of the peripheral surface of the impulse pin (16) is cylindrical.
- Device of one of the preceding claims, characterized in that the second segment of the peripheral surface of the impulse pin (16) is flat.
- Device of claim 7, characterized in that the axis of rotation of the tourbillon cage is coaxial with the pivoting shaft of the blocking lever (13).
- Watch or watch movement with an escapement device according to one of the preceding claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20060005703 EP1837718B1 (en) | 2006-03-21 | 2006-03-21 | Escapement device for a timepiece movement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20060005703 EP1837718B1 (en) | 2006-03-21 | 2006-03-21 | Escapement device for a timepiece movement |
Publications (2)
Publication Number | Publication Date |
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EP1837718A1 EP1837718A1 (en) | 2007-09-26 |
EP1837718B1 true EP1837718B1 (en) | 2014-05-28 |
Family
ID=37564114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060005703 Not-in-force EP1837718B1 (en) | 2006-03-21 | 2006-03-21 | Escapement device for a timepiece movement |
Country Status (1)
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EP (1) | EP1837718B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5441434B2 (en) * | 2009-02-20 | 2014-03-12 | セイコーインスツル株式会社 | Detent escapement and speed control and escapement using this |
FR3008200A1 (en) * | 2013-07-08 | 2015-01-09 | Daniel Galazzo | EXHAUST FOR WATCHPIECES WITH CAGE-FREE TOURBILLON |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US172165A (en) * | 1876-01-11 | Improvement in chronometer-escapements for watches | ||
CH258A (en) * | 1888-12-27 | 1889-02-20 | Clemence Freres | Advanced detent escapement |
DE136368C (en) * | 1902-04-12 | |||
CH58715A (en) * | 1912-01-25 | 1913-04-01 | Theodore Jequier | Escapement for pendulum timepieces |
EP0018796B1 (en) * | 1979-04-30 | 1984-11-07 | George Daniels | Watches, clocks and chronometers and escapements therefor |
-
2006
- 2006-03-21 EP EP20060005703 patent/EP1837718B1/en not_active Not-in-force
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EP1837718A1 (en) | 2007-09-26 |
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