Patent Grant
11988993
This application is a § 371 national stage entry of International Application No. PCT/EP2019/066323, filed on Jun. 20, 2019, which claims priority to European Patent Application No. 18181276.9, filed on Jul. 2, 2018, and European Patent Application No. 18209214.8, filed Nov. 29, 2018, the entire contents of which are incorporated herein by reference.
The present invention relates to the field of horology. It relates more particularly to an escapement mechanism.
The Swiss anchor escapement associated with a spring-balance oscillator has become the regulating system most commonly used these days. It is simple, reliable, resistant to shocks, and is well mastered by horologists. However, it is not without defects, notably in terms of energy efficiency and with respect to its isochronism. Indeed, the interaction on each alternation of the balance between the escapement wheel and the anchor, as well as the shocks generated waste a lot of energy. Furthermore, the drawing of the anchor upon release also generates a significant disturbance of the oscillations of the balance. Indeed, the use of an anchor to both trigger an impulse and to transmit it to the balance is not optimal.
The detent escapement represents an improvement in efficiency and isochronism, the detent lever being actuated once per oscillation and the impulse being supplied directly by the escapement wheel to an impulse pallet rotationally secured to the balance. The balance is thus disturbed by the impulse once per oscillation instead of on each alternation, and this disturbance is less great than in the case of the Swiss anchor. In essence, the resistance imparted by the detent lever is less than that of the anchor because the impulse is given directly by the escapement wheel instead of being transmitted by an anchor or the like, which engenders a lesser energy consumption. The efficiency of the escapement and power reserve of the movement are thus enhanced.
The document CH712052 describes a particular single-beat escapement. The balance bears a one-way drive system which drives, once per oscillation, a counting wheel at a rate of one step per actuation. This counting wheel is positioned by a jumper, and comprises a cam which, once per n steps of the counting wheel, lifts a blocking lever which retains an impulse wheel. The latter is thus free to pivot to give an impulse directly to the balance and is blocked again by the blocking lever until the next actuation.
However, the presence of a one-way drive system mounted rotationally secured to the balance presents difficulties with respect to its adjustment and with regard to the balancing of the balance. In effect, this arrangement is not very, or not at all, compatible with conventional balances. Moreover, the use of a jumper to position the counting wheel offers a low resistance to shock and can be improved with respect to the resistance offered to the balance in the driving of said wheel.
The aim of the invention is consequently to propose an escapement for a timepiece in which the abovementioned defects are at least partially overcome.
More specifically, the invention relates to an escapement mechanism for a timepiece, as defined by claim 1.
This escapement mechanism is, of course, intended to cooperate with an oscillator arranged to perform oscillations, such as, for example, a spring-balance oscillator, comprising an inertial mass (typically called a “balance”), arranged so as to carry out oscillations in rotation about its axis of rotation under the effect of a return force supplied by an elastic element such as a hairspring.
Said mechanism comprises:
According to the invention, when said system is operating, the counting wheel is permanently subjected to a torque, for example under the effect of an elastic element which directly or indirectly exerts a force in the direction of the direction of rotation of the counting wheel at all times, and said counting wheel is arranged to advance in rotation by one half-step of its toothing per alternation of said oscillator.
By these means, the disturbance of the oscillations of the oscillator is minimized for two reasons. Firstly, no jumper or pawl is needed to retain the counting wheel since the latter is permanently subjected to a torque and can therefore be blocked by one or more pallets or the like. This torque ensures the rotational driving of the counting wheel, which is not therefore performed by a one-way drive system rotationally secured to the oscillator—the sole effect of the oscillator being to release the counting wheel instead of driving it. It goes almost without saying that a releasing of the wheel requires less force than a direct drive, which disturbs the oscillator less. Moreover, this reduced disturbance is divided between the two opposing alternations of the oscillator instead of being concentrated in one of the two. The disturbance is therefore rather divided symmetrically between the two alternations instead of representing one great disturbance due to an actuation of one wheel in one alternance of every two. Since the disturbance of the oscillator is thus minimized, its isochronism is enhanced, while the excellent power reserve allowed by a single-beat escapement is retained.
Advantageously, the mechanism comprises a first blocking lever arranged to move between a first angular position and a second angular position upon a first alternation of said oscillator, and to move between said second angular position and said first angular position upon a second alternation of said oscillator, said blocking lever being arranged to block the rotation of said counting wheel and to release the latter for one half-step of its toothing upon each of said movements of said first blocking lever.
Advantageously, the mechanism further comprises a second blocking lever arranged to block and release said impulse wheel in function of the rotation of said counting wheel. To this end, said second blocking lever can be arranged to release said impulse wheel for one step of its toothing on each n alternations of said oscillator, n being a number greater than two and, preferably, an even number, and even more preferentially equal to four or to six.
Advantageously, the second blocking lever comprises a cam follower arranged to cooperate with at least one cam or at least one cam track rotationally secured to said counting wheel. The follower can be, for example, a catch, a pin, a fork or the like which can be monobloc with said cam wheel or can be added to the latter or be composed of an element rotationally secured to the counting wheel. It is for example possible to provide several distinct cams, one continuous cam or one continuous cam track which cooperates with a cam follower of appropriate form for the shape chosen for the cam. It should be noted that the term “cam” should be understood in the broad sense, a cam thus being able not only to have a conventional form but also to have a form of particular toothing, pins or catches, successions of pins or catches forming a path, a spline, etc., or any other element exerting a cam action.
Advantageously, said second blocking lever comprises at least one pallet arranged to block and release (in due course) said impulse wheel. This pallet can be made of stone or the like or can be monobloc with said lever.
Advantageously, said second blocking lever comprises a single pallet arranged to block and to release said impulse wheel, said second blocking lever being arranged to be lifted by an actuation lever in order to release said impulse wheel. This actuation lever is arranged to move in translation between a retracted position in which said actuation lever is out of reach of an actuation pallet rotationally secured to said oscillator and an active position in which said actuation lever can cooperate with said actuation pallet to lift said second blocking lever. The state of said actuation lever, that is to say whether it is in an active position or a retracted position, is determined in function of the angular position of said counting wheel. In this embodiment, the releasing of the impulse wheel is thus controlled by the counting wheel and triggered by the actuation pallet.
Advantageously, said actuation lever is arranged to move between said active position and said retracted position under the effect of a control lever bearing a cam follower arranged to cooperate with a cam track or cams rotationally secured to said counting wheel.
Advantageously, said torque, to which said counting wheel is subjected, is supplied via an elastic element armed directly or indirectly by the impulse wheel. Said torque thus remains substantially constant when the mechanism is operating, the elastic element being recharged each time the impulse wheel is moved angularly.
Advantageously, said elastic element forms part of a recharge assembly comprising a wheel kinematically linked with said counting wheel. A first end of said elastic element can thus be fixed to said wheel and a second end of said elastic element is rotationally secured to a recharge wheel arranged to be driven in rotation by a toothing of said impulse wheel.
Advantageously, said recharge wheel is arranged to be retained by a retention lever arranged to block a rotation of said recharge wheel in a first direction and to be lifted by a tooth of said recharge wheel when the latter pivots in a second direction, opposite to said first direction.
Advantageously, said retention lever is arranged to cooperate with a plurality of abutments provided on said impulse wheel, said abutments being arranged to prevent said retention lever from being released, except when said recharge wheel is being driven by said impulse wheel. The retention lever is thus protected from shocks and no unwanted release of the impulse wheel is possible.
Advantageously, said impulse wheel and said recharge wheel each comprise a plurality of teeth distributed between at least two different planes, each tooth of a first plane being situated angularly between two angularly adjacent teeth of the other plane or planes.
Advantageously, a first end of said elastic element is rotationally secured to said impulse wheel and a second end of said elastic element is rotationally secured to a wheel kinematically linked with said counting wheel. This construction is notably very compact and requires no separate recharge wheel.
Advantageously, said second blocking lever comprises a single blocking pallet arranged to block the impulse wheel and a cam follower arranged to cooperate with at least one cam that said counting wheel comprises, said counting wheel comprising a plurality of abutments arranged to prevent said second blocking lever from releasing said impulse wheel except when said cam follower is being actuated by said at least one cam. This arrangement of abutments protects the second blocking lever from shocks, preventing it from being lifted except when it is actuated by said at least one cam.
Advantageously, the impulse wheel and the counting wheel are each pivoted about their own axis of rotation, each of these axes being distinct from the other, which allows the escapement to be made compact height-wise.
Said mechanism can be incorporated in a timepiece movement comprising a mechanism as claimed in one of the preceding claims and an oscillator arranged to cooperate with said mechanism, this movement being able to be incorporated in a timepiece.
Other details of the invention will become clearly apparent upon reading the following description, with reference to the attached drawings in which:
The escapement 1 cooperates with a spring-balance oscillator, of which only the table roller 3 has been represented so as not to overload the drawings and whose axis of rotation has been represented by a vertical chain-dotted line. This table roller 3, and the spring-balance to which it is rotationally secured, can be of conventional form, but other known variants (for example balances without felloes, high-frequency or the like) are also possible. The table roller comprises a roller pin 3a and an impulse pallet 3b, which can alternatively be mounted directly on the balance. These components each have a conventional form, the roller pin 3a being used to make a first blocking lever 5 pivot by means of a fork 5a that the latter comprises. It will be noted that it is also possible for the table roller 3 to be composed of several parts, for example in order to be able to regulate the angular position of one or other of the roller pin 3a and of the impulse pallet 3b with respect to the table roller 3, and to do so without influencing the position of the other.
Said fork 5a is well known in the context of the Swiss anchor escapement. It cooperates with the roller pin 3a once per alternation in order to move the first blocking lever 5 from a stable first angular position (illustrated in
The first blocking lever 5 comprises a pair of pallets 5b, 5c, which cooperate with a counting wheel 7, which is pivoted about a corresponding axis of rotation 7z and which is subjected to a torque tending to drive it in the clockwise direction (according to the orientation of
In order to supply torque to ensure the advancing of the counting wheel 7, the escapement mechanism 1 comprises, in addition, a recharge assembly 9, which comprises a wheel 9a kinematically linked with the counting wheel 7 by a pinion 7a rotationally secured thereto. Coaxial to said wheel 9a there is a recharge wheel 9c and an elastic element 9b, one of the ends of which is fixed to said wheel 9a and the other end of which is fixed to the recharge wheel 9c. The wheel 9a can pivot with respect to the recharge wheel 9c, and, when the mechanism 1 is at rest, the elastic element is subjected to a prestress. The counting wheel 7 is thus subjected to a torque at all times, this torque being supplied by the elastic element 9b and tending to drive the counting wheel 7 in its direction of rotation. Note that the elastic element 9b as represented is a hairspring, but other forms are also possible, such as, for example, a leaf spring or any other elastic element known to the person skilled in the art.
In this embodiment, the recharge wheel 9c is driven by the impulse wheel 11, as explained below, and is prevented from pivoting in the wrong direction by a retention lever 13, the extreme angular positions of which are defined by suitable abutments 17b. This retention lever 13 comprises a blocking pallet 13a which, at rest, cooperates with a straight flank of a tooth of the recharge wheel 9c. When the recharge wheel 9a is pivoted in the counter-clockwise direction (with respect to
The impulse wheel 11 is pivoted about its own axis of rotation 11z, and is driven by a power source such as a barrel, the force arriving on its pinion 11a to which it is rotationally secured. This pinion 11a thus serves as torque input for the mechanism 1.
The impulse wheel 11 comprises a plurality of impulse teeth 11b, arranged on two rows on two different levels of the impulse wheel 11, the teeth of one row being interposed angularly between those of the other with constant angular separations. These teeth cooperate with the impulse pallet 3b, which has a sufficient height to cooperate with both rows. Note also that an arrangement of the teeth 11b in a single plane is also possible, but the chosen configuration makes it possible to avoid having angularly adjacent teeth come accidentally into contact with other elements, for example, in the driving of the recharge wheel 9c. In addition, the teeth can also be arranged on more than two rows on more than two different levels, the teeth of the recharge wheel 9c being obviously arranged to cooperate correctly with the rows of teeth of the impulse wheel.
The impulse wheel 11 is blocked by a second blocking lever 15, which comprises a pair of pallets 15a and 15b arranged to block the teeth 11b of the impulse wheel 11 and to release them one by one when the blocking lever 15 is moved from one of its stable angular positions to the other, in a conventional manner. In this embodiment, the second blocking lever 15 therefore takes the form of an anchor, and the same comments as given above in the context of the pallets 5b and 5c apply to the pallets 15a and 15b.
The angular movement of the second blocking lever 15 to effect the releasing of the impulse wheel 11 is controlled by the counting wheel 7, which comprises a cam track 7b. The latter comprises sections with smaller radius 7c and sections with greater radius 7d, regularly angularly distributed, A cam follower 15c, in the form of a pin, is borne by an arm 15d of the second blocking lever 15 and is positioned in this cam track 7b. The latter is conformed to control the second blocking lever 15 in order to release the impulse wheel once per n oscillations of the balance upon the transition from a section with smaller radius 7c to a second with greater radius 7d, and vice versa. In the embodiment illustrated, n is three, and, consequently, the radius of the cam track changes every three teeth of the counting wheel, but it can in principle change more or less frequently. Because of this, after the passage of three teeth (that is to say following six alternations of the balance), the second blocking lever 15 changes angular position from one of its extreme positions to the other and one of the teeth 11b of the impulse wheel 11 cooperates with the impulse pallet 3b in order to transmit an impulse to the oscillator. Alternatively, the counting wheel 7 can comprise a conventional cam, a cam follower borne by the second blocking lever 15 being kept in contact with said cam by a suitable elastic element. Also alternatively, the counting wheel 7 can comprise a constant radius cam, the second blocking lever 15 having a fork whose two arms follow said cam.
Before being blocked again by one of the pallets 15a, 15b of the second blocking lever 15, one of the teeth 11b of the impulse wheel cooperates with a tooth of the recharge wheel 9c in order to drive it by one step of its toothing, the latter also comprising two rows of teeth arranged in two different planes in order to be able to cooperate with the toothing with two rows of the impulse wheel. Because of this, the retention lever 13 is lifted by the curved flank of a tooth, then drops back into the trajectory of the next tooth under the effect of a return spring 13b in order to block the recharge wheel 9c again.
In order to protect the retention lever 13 from shocks, it also comprises a security pallet 13c, which is situated inside the impulse wheel 11. The latter comprises a plurality of abutments 11c that protrude from its feline in a direction parallel to the axis of rotation of the wheel 11. These abutments 11c are used to prevent the retention lever 13 from being lifted except during the driving of the recharge wheel 9c. To this end, the abutments 11c are arranged to block the security pallet 13c, and interstices 11d separating said abutments 11c are positioned to allow the passage of this security pallet 13c exclusively at the moment of driving of the recharge wheel 9c. Because of this, the retention lever 13 is prevented from being moved angularly accidentally, for example following a shock. Even though the abutments 11c and the interstices 11d have been illustrated as being monobloc with the impulse wheel 11, they can also be defined by one element (or even several elements) added to the latter.
The construction and the general principle of operation of the escapement of
In
The cycle continues until the pin 15c reaches the end of the section with smaller radius of the cam track 7b, which occurs on the sixth alternation counted from the state illustrated in
The moment of disengagement of the counting wheel 7 upon the sixth alternation is illustrated in
The counting wheel 7 has pivoted and the pin 15c of the second blocking lever 15 rises toward the next section of the cam track 7b, with greater radius 7d.
This transition of sections has caused the second disengaging lever 15 to pivot, which has lifted its exit-pallet and has released the impulse wheel.
In
Simultaneously, a tooth of the impulse wheel 11 catches the impulse pallet 3b and begins to give an impulse thereto.
Six alternations of the oscillator later, the same impulse and recharging cycle is repeated, the second blocking lever 15 switching over from its second angular position, as illustrated in
It is thus clear that, by modifying the form of the cam track 7b, the constructor can modify the number of lost beats of the escapement. He can even arrange the escapement to give impulses asymmetrically, that is to say that the number of alternations counted can vary, for example according to a sequence of four alternations, then six alternations, then four alternations, then six alternations, by acting on the respective angular lengths of the sections with smaller radius 7c and greater radius 7d.
The second blocking lever 15 of this embodiment reverts to the form of a detent instead of an anchor and, to this end, comprises only a single blocking pallet 15a. The latter is kept engaged with the impulse wheel 11 by means of an elastic return element 15f, of which one of the ends is fixed to a frame element (not illustrated), the other exerting a force on the lever 15. The extreme angular positions of the latter are once again defined by suitable abutments 17c. The impulse wheel 11, which comprises only a single row of teeth arranged in a single plane, is arranged to pivot in the counter-clockwise direction (relative to
The second blocking lever 15 is actuated by a plurality of cams 7f, rotationally secured to the counting wheel 7, which are arranged to lift the cam follower 15c, which is borne once again by an arm 15d of the second blocking lever 15, and is formed as the extension thereof in the direction of the counting wheel 7. Once per n alternations (n being six here), one of the cams 7f, which here take the form of a plurality of individual teeth, lifts the second blocking lever 15, which allows a tooth of the impulse wheel 11 to escape. The second blocking lever 15 immediately drops back under the effect of its elastic element 15f and the rotation of the impulse wheel 11, by one step, provides an impulse to the impulse pallet 3b in the clockwise direction (relative to
In order to ensure that the second blocking lever 15 is not lifted accidentally following a shock, the counting wheel 7 is provided with a plurality of abutments 7g protruding from the felloe of the counting wheel 7, these abutments 7g being separated by interstices 7h. Once again, these abutments 7g extend parallel to the axis of rotation of the counting wheel 7. When the cam follower 15c is not facing an interstice 7h, it is blocked by one of the abutments 7g and the impulse wheel 11 can thus not be released. By contrast, when the cam follower 15c cooperates with one of the cams 7f of the counting wheel 7 to move the second blocking lever 15 in order to release the impulse wheel 11, said follower 15c is facing an interstice 7h between two adjacent abutments 7g, as shown more clearly by
In this embodiment, the recharge assembly 9 is simplified and mounted coaxial with the impulse wheel. To this end, the internal end of the elastic element 9b is rotationally secured to the impulse wheel 11, and there is no recharge wheel. Consequently, each time the impulse wheel 11 is released by the second blocking lever 15, the elastic element 9b is simply rewound by the rotation of the axis of the latter.
The cycle of operation of this embodiment therefore proceeds in a way similar to that of the embodiment of
However, in this embodiment, the second blocking lever 15 is not controlled directly by the cam track 7b rotationally secured to the counting wheel 7, but indirectly through an actuation lever 19, mounted to translate and pivot on a frame element that is not represented. This pivoting will be described below in the context of
The actuation lever 19 comprises an end 19a, which is linked to the main body of said lever 19 via a blade 19f which has a certain flexibility, said end 19a being arranged to cooperate with an actuation pallet 3d secured to the table roller 3. The latter can take the form of a conventional pallet, a pin, a finger or any equivalent form. It can be monobloc with the table roller 3 or can be an element added to the latter. In the state represented in
The translation of the actuation lever 19 is controlled by a control lever 21, mounted to pivot on a frame element (not represented). A first end of this lever 21 bears a cam follower 21a which takes place in said cam track 7b, the other end 21b being arranged to move the actuation lever 19 in translation in a direction substantially following the main axis thereof. To this end, the control lever 21 bears a stud 21c which sits with play in a slit 19d in the actuation lever, this slit 19d extending substantially at right angles to said direction and to the main axis 19g of said lever 19 (see
The cam track 7b is conformed in such a way that, upon the four alternations of the balance which follow, the follower 21a remains in a section with greater radius 7d of said cam track 7b. That way, the actuation lever 19 remains in its retracted position and its end does not cooperate with the actuation pallet.
The table roller 3 continues to pivot in the counter-clockwise direction (relative to
In order for said translation to be substantially rectilinear, the actuation lever 19 is guided by its two slits 19b, 19c, which extend substantially parallel to the main axis 19g (see
The current alternation continues, the table roller 3 continuing its travel in the counter-clockwise direction (relative to
Upon the next alternation, that is to say the sixth from the situation illustration in
As illustrated in
The impulse wheel 11 is thus released, the impulse is triggered and one of the teeth of the impulse wheel 11 gives an impulse to the impulse pallet 3b in the counter-clockwise direction (relative to
When the actuation pallet 3d goes beyond the end 19a and consequently releases the actuation lever 19, the latter and the second blocking lever 15 drop back under the effect of the elastic element 15f, the blocking pallet 15a stopping and blocking the next tooth of the impulse wheel. This situation is illustrated in
Since the control lever 21 is again in the position of
Then, the roller pin 3a drives the first blocking lever 5 in the counter-clockwise direction (relative to
By these means, the counting wheel 7 once again controls the periodic releasing of the impulse wheel 11, even though the latter is triggered by the actuation pallet 3d. In other words, the position of the actuation lever 19 is controlled by the counting wheel 7 via the control lever 21 the active position of the actuation lever 19 allowing the triggering of the impulse.
In order to avoid the actuation lever 19 moving in case of shock and having it start rotating and/or translating—although it should not be in the zone of passage of the actuation pallet 3d (between the sixth and the fourth next alternation)—abutments 17a are provided in order to avoid an accidental rotation of this lever: indeed, this would have the effect of lifting the second blocking lever 15 and of releasing the impulse wheel 11 at an unwanted instant.
Furthermore, to avoid having this lever 19 being moved in translation hi said zone, the cam follower 21a, located in the cam track 7b (therefore having an anti-shock effect), is prevented from moving accidentally.
However, an arrangement of cams similar to that of the embodiment of
Furthermore, between the fifth and sixth alternations, in order for the impulse wheel 11 not to be released accidentally in case of shock, the second blocking lever 15 bears a finger 15g, arranged to abut against the perimeter of the table roller 3 when this second blocking lever 15 is not allowed to be lifted. In order to allow the release of the impulse wheel 11, exclusively when the table roller 3 is in the right orientation, a notch 31 is provided in the table roller 3. When the finger 15g is facing said notch 3f (see
Moreover, other arrangements for guiding the actuation lever 19 are of course possible, and the recharge assembly 9 of the embodiment of
The technical effects obtained by these constructions are as follows.
With respect to the first blocking lever 5, the forces generated upon its interaction with the roller pin 3a are minimal and are generated “symmetrically”. Because of this, the disturbance of the oscillator is minimized and is divided between the alternations in both directions of rotation instead of being concentrated in a single more significant disturbance, once per oscillation.
The fact that the counting wheel 7 is subjected to a torque by means of the elastic element 9b means that any use of a jumper or the like is avoided to retain the counting wheel 7, which is simply blocked by the pallets of the first blocking lever 5 in a way similar to a conventional pallet. To this end, a draw angle can be provided for the rest surfaces of the pallets 5b and 5c, as is known, Because of this, the oscillator does not itself drive the counting wheel 7, as is the case the document CH712052. The oscillator simply triggers the rotation of the counting wheel 7 under the effect of the elastic element 9b. It goes without saying that such triggering requires significantly less force than a direct drive overcoming the effect of a jumper, and consequently the disturbances of the oscillator are minimized.
Since the counting wheel 7 is driven by the elastic element 9b which is recharged on each step of the impulse wheel 11, said torque remains relatively constant and the resistance to disengagement of the first blocking lever 5 remains also substantially constant and does not vary according to the state of winding of the barrel spring of the movement in which the escapement 1 is incorporated.
Since the efficiency of this escapement 1 is very good, it is possible to increase the number of lost beats of the escapement 1, that is to say by supplying an impulse only once every two or three (or even more) oscillations, the power reserve of the movement being thus enhanced by comparison to a conventional escapement since the impulse wheel 11 pivots less frequently. In addition, the disturbances of the oscillator due to the impulses are also reduced by reducing the impulse frequency, which increases the isochronism of the oscillator.
It will also be noted that the escapement mechanism 1 according to the invention, in all its variants, is compatible with incorporation in a tourbillon system with one, two or three axes of rotation.
With respect to the materials which can be used to produce the various components of the escapement mechanism 1, the latter can be composed of “traditional” materials, such as metals and alloys (steel, brass, nickel, nickel phosphorus, etc.), materials based on silicon (Si, SiOx, SiCx, SiNx, etc.) in monocrystalline, polycrystalline or amorphous form, diamond, ruby, sapphire, corundum, glass, ceramics, ceramic glasses, polymers, composites, etc. The components can be machined conventionally, but can also be obtained by additive technologies such as LIGA, sintering, 3D printing, etc. using various materials (for example epoxy or other polymer material), depending on the material. Furthermore, coatings of different substances can be provided at the points that are stressed in order to reinforce their resistance, reduced frictions, or the like (diamond, etc.).
Although the invention has been particularly shown and described in reference to particular embodiments, other variants are possible without departing from the framework of the invention as defined in the claims.
For example, in considering the embodiment of
Alternatively, the person skilled in the art can modify the arrangement of
Moreover, in the case where the escapement mechanism 1 is incorporated in a clock and is not subjected to shocks, the abutments 11c, respectively 7g, can be eliminated, the safety pallet 13c of the embodiment of
| Number | Date | Country | Kind |
|---|---|---|---|
| 18181276 | Jul 2018 | EP | regional |
| 18209214 | Nov 2018 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2019/066323 | 6/20/2019 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2020/007619 | 1/9/2020 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3704582 | Wuthrich | Dec 1972 | A |
| 20080259738 | Jurin | Oct 2008 | A1 |
| 20120113764 | Queval | May 2012 | A1 |
| 20120250467 | Bas | Oct 2012 | A1 |
| Number | Date | Country |
|---|---|---|
| 712013 | Jul 2017 | CH |
| 712052 | Jul 2017 | CH |
| 712084 | Jul 2017 | CH |
| 106707718 | May 2017 | CN |
| 2660661 | Nov 2013 | EP |
| 3070537 | Sep 2016 | EP |
| 3070537 | Sep 2016 | EP |
| 3121661 | Jan 2017 | EP |
| 3206088 | Aug 2017 | EP |
| 3293583 | Mar 2018 | EP |
| 2004008258 | Jan 2004 | WO |
| 2017125194 | Jul 2017 | WO |
| 2018046563 | Mar 2018 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 20210141340 A1 | May 2021 | US |
