摘要:
The invention relates to a method of producing a micro- or nano-mechanical part, such as a pulley or belt for clock making, comprising a laser ablation step which is performed with the aid of a femto-laser, i.e. a laser having a pulse with a duration of less than 5x10-13 seconds and a power of more than 1012 watts on the beam/material interaction surface. According to the invention, the part to be machined is pre-modelled in three dimensions and said three-dimensional model is used to generate the machining programme.
摘要:
A device comprises a base movement (MB) for a timepiece the time display of which is driven by a first barrel connected to a first mechanism and a first regulator and an autonomous chronographic module the time display of which is driven by a second barrel independent of the first and connected to a second mechanism and a second regulator. The chronographic module is exclusively comprised of mechanical components. The oscillation frequency provided by the regulator thereof is equal to N times the oscillation frequency for the regulator of the base movement, the coefficient N being able to be defined as a function of a specific application for the chronograph, such that any chronographic module as previously defined may co-operate with the same base movement. The chronograph regulator is constantly engaged with the corresponding mechanism. The chronograph module permits the reading of a time interval with a minimum precision of one hundredth of a second.
摘要:
The watchband comprises for instance three rows of metal chain links. The chain links of the first central row (1, 1' etc.) are offset with respect to the chain links of the other two rows (2, 2' etc.). Each chain link of the central row (1') can pivot with respect to the preceding chain link (1) and with respect to the following chain link (1'') about pins (3) linked to the chain links of the lateral rows. Stop elements, for instance other pins (4, 4') also linked to the chain links of the lateral rows, restrict the pivoting angle of the central chain links about the first pins (3). The chain links are removable for adjusting the length of the watchband. The advantages are ergonomic and aesthetic. The invention avoids the skin being pinched or hairs being pulled. It also reduces the wear of the chain links and allows good control of the curve of the watchband, and of the interstices between successive chain links.
摘要:
Un dispositif comporte un movement horaire de base MB dont les indicateurs horaires sont entraînés par un premier barillet relié à un premier rouage et un premier organe régulateur, et un module chronographe autonome MCA dont les indicateurs sont entraînés par un second barillet indépendant du premier, relié à un second rouage et un second organe régulateur. Le module chronographe est exclusivement composé d'éléments mécaniques. La fréquence d'oscillation fournie par son régulateur est égale à N fois la fréquence d'oscillation fournie par le régulateur du movement de base, le coefficient N pouvant être défini en fonction d'une application spécifique du chronographe, de sorte que tout module chronographe ainsi préalablement défini peut coopérer avec le même mouvement de base. Le régulateur du chronographe reste constamment en prise avec le rouage correspondant. Le module chronographe permet la lecture d'un intervalle de temps avec une précision minima du centième de seconde.
摘要:
The invention concerns a watch part made of the following alloy (composition expressed in weight percentage): aluminium 5.5 to 6.75; vanadium 3.5 to 4.5; nitrogen 0.05 maximum; carbon 0.1 maximum; hydrogen 0.015 maximum; iron 0.4 maximum; oxygen 0.2 maximum; various elements: 0.1 maximum each, 0.5 maximum altogether, the remainder being titanium. Said alloy enables the part to be machined and polished with standard tools and provide it with a mirror-like shine.
摘要:
Afin de pouvoir afficher d'une façon analogique plusieurs temps chrométrés devant selon la cas être relevés à très peu de temps d'intervalle, la montre comprend, dans un boîtier (1 outre des organes d'indication du temps courant (2-4), des indicateurs de temps comptés des centièmes de seconde, des secondes, des minutes et des heures (5-8). La montre comprend également des mémoires où les temps chronométrés sont enregistrés à l'aide d'un poussoir (10), chaque temps successif étant emmagasiné dans une mémoire successive. L'appel du contenu des mémoires pour l'affichage est commandé indépendamment par un autre poussoir (12), de sorte que l'on peut prendre rapidement destemps et les lire ensuite sans être pressé. Un affichage digital (13) du rang de la mémoire dont le contenu est affiché par les aiguilles est for utile aux chronométreurs utilisant la montre-chronographe. Ce chronographe électronique digital convient particulièrement dans les cas de chronométrage où une grande souplesse ou diversité de fonctions est recherchée.
摘要:
The invention concerns a bracelet comprising a clasp with an unfolding buckle including: a first plate (7), at least a second plate (8) articulated with said first plate, a cover (4,6) beneath which the free ends of the blades are folded back when the clasp is closed. The cover comprises a catching system for maintaining the plates closed and for releasing them by manual action on said catching system to open said clasp. It further comprises a housing (4) and a hood (6) closing the lower side of the cover. The housing comprises solid walls of different thickness obtained by shavings-removal machining or moulding. The walls of the housing define between them and with said hood an internal volume (45; 95) wherein the catching system is at least partly housed.
摘要:
The invention concerns a band comprising several rows (6, 7, 8) of links (1, 2), each row of link including at least two links traversed by a rod member (3, 4) engaged in at least a link of the next row, so as to the two rows are linked in articulation. The rod member consists of a pin (3) and a head (4) screwed in a tapped aperture (32) in the pin. The next row of links can be detached by first removing the left link (2), by unscrewing the head (4), then by removing the right link together with the pin (3). The invention is advantageous in that the structure is not visible externally and without any play.
摘要:
The invention concerns a watch case comprising: a middle (10), a rotary bezel (14-2) outside said middle, said rotary bezel comprising at least a magnetic portion (2), a member inside said middle, designed to be controlled by the magnetic field of said magnetic portion, said member (11) including a ring concentric (4) to said rotary bezel and provided with at least a magnetic portion, so as to be driven in rotation by the magnetic field of said rotary bezel during its rotation, and wherein said member is of the analog type and can take up an infinite number of different positions depending on the angular position of the rotary bezel.