Abrégé

The invention relates to an oscillating clockmaking part comprising a central metal part (3) and a peripheral part (2) secured to the central part. According to the invention, the peripheral part is made from a plastic material loaded with heavy metal particles. The oscillating clockmaking part can advantageously be an oscillating mass of a winder or a balance.

Classes IPC  ?

• G04B 5/16 - Structure des masses
• G04B 17/06 - Oscillateurs à spiral, p. ex. balancier

Abrégé

The invention relates to a method for manufacturing a watch plate and the watch plate obtained by said method, enabling the production of an up-market product in a relatively simple manner. The watch plate (20) consists of a thick central rigid core (21) and two fine-tip parts (22, 23) shaped like flat plates disposed on both sides of the central core (21). The end pieces (22, 23), adjusted and ground with great precision to ensure the flatness thereof, and the central core (21) are assembled on a work fitting and attached therebetween by at least one attaching means such as laser transparency welding.

Classes IPC  ?

• G04B 29/02 - PlatinesPontsCoqs
• G04D 3/00 - Machines ou outils de travail des matériaux pour la fabrication ou la réparation des montres

Abrégé

The invention relates to a method of displaying the date on an analogue watch and the watch using this method. This watch (40) comprises two hands for displaying the time (43, 44), a time- and date-setting winding crown (45) connected to a time-setting stem, a first screen (41) for digitally displaying the date and a second screen (42) for digitally displaying the time in a second time zone by means of an EPD-type liquid crystal display, and a microprocessor designed to control all the functions of the watch. The display of the date and the time in a second time zone is made to contrast with the background of the display screens (41, 42), and the contrast is reversed at midday and at midnight to differentiate AM time from PM time. This contrast inversion is controlled electronically by the microprocessor of the watch.

Classes IPC  ?

• G04G 9/00 - Moyens visuels d'indication de l'heure ou de la date
• G04C 17/00 - Indication optique du temps par des moyens électriques