Abstract:
This is a method for producing a bottom plate for a timepiece. The method comprises the following steps: a) bottom-plate material including at least one metallic element is provided (A1, A2); b) said bottom plate is formed (B1, B2); c) the whole is chilled (C) so that said timepiece bottom plate is placed in an at least partially amorphous state; and d) said bottom plate is recovered (D).
Abstract:
The invention relates to a gold-alloy electroformed part characterised in that the gold alloy includes 88 to 94 wt % of gold, x wt % of copper and/or silver, and 2x wt % of zinc, x being comprised between 2 and 4.
Abstract:
The invention concerns a spiral spring made from a photostructurable glass plate by UV irradiation, heat treatment and chemical etching, said glass having a thermal coefficient of Young modulus CTE 0 . By UV irradiation through one or more masks, optionally completed by a heat treatment, selected zones of the spiral spring have a CTE 0 modified into a CTE i value.
Abstract translation:本发明涉及一种通过UV照射,热处理和化学蚀刻由可光结构玻璃板制成的螺旋弹簧,所述玻璃具有杨氏模量CTE 0 SUB>的热系数。 通过一个或多个掩模的UV照射(任选地通过热处理完成),螺旋弹簧的选定区域具有被修改为CTE i SUB>值的CTE 0 SUB>。
Abstract:
The sensor (6) has a flexible membrane (11) co-operating with a transmission device (10) that provides, from deformation of the membrane, a value representative of pressure. The membrane is made of amorphous material to optimize dimensions of the sensor. The material has Young's modulus greater than 50 gigapascal, where ratio between elastic limit and the Young's modulus is greater than 0.01. The material comprises a metallic element such as precious metal alloys or precious metallic element e.g. gold, platinum, palladium, rhenium, rhodium, silver, iridium and osmium. An independent claim is also included for a watch comprising a pressure sensor and a conversion unit for converting a value representative of pressure into a depth value.
Abstract:
The sensor (6) has a flexible membrane (11) co-operating with a transmission device (10) that provides, from deformation of the membrane, a value representative of pressure. The membrane is made of amorphous material to optimize dimensions of the sensor. The material has Young's modulus greater than 50 gigapascal, where ratio between elastic limit and the Young's modulus is greater than 0.01. The material comprises a metallic element such as precious metal alloys or precious metallic element e.g. gold, platinum, palladium, rhenium, rhodium, silver, iridium and osmium. An independent claim is also included for a watch comprising a pressure sensor and a conversion unit for converting a value representative of pressure into a depth value.
Abstract:
Dispositif d’affichage d’une information comprenant une cellule à cristal liquide (1) comportant un substrat avant (2) transparent et souple et un substrat arrière (4) également transparent ou non et souple, au moins une électrode et une contre-électrode correspondante étant structurées sur la face arrière du substrat avant (2) et sur la face avant du substrat arrière (4), les deux substrats avant et arrière (2, 4) étant réunis et maintenus à distance constante l’un de l’autre par un cadre de scellement (6), ce cadre de scellement (6) délimitant un volume étanche pour le confinement d’un cristal liquide (CL) de type nématique en hélice ou super-nématique en hélice, un colorant dichroïque (A) étant dissous dans le cristal liquide (CL), le dispositif d’affichage étant caractérisé en ce que la cellule à cristal liquide souple (1) est intégrée dans un support également souple.
Abstract:
L’invention se rapporte à un capteur de pression (6). Ce capteur de pression (6) comprend une membrane (11) flexible coopérant avec un dispositif de transmission (10) permettant à partir de la déformation de la membrane (11) de fournir une valeur représentative de la pression. La membrane (11) est réalisée en matériau au moins partiellement amorphe afin d’optimiser les dimensions dudit capteur (6).
Abstract:
La présente invention se rapporte à un procédé de réalisation d’un élément de pièce d’horlogerie. Ce procédé (1) se caractérise en ce qu’il comprend les étapes suivantes: a) se munir (A1) du matériau au moins partiellement amorphe constitutif de l’élément; b) réaliser (B2) ledit élément par matriçage à une température comprise entre sa température de transition vitreuse et sa température de cristallisation; c) refroidir (C) l’ensemble de sorte à solidifier ledit élément de montre; et d) récupérer (D) ledit élément.
Abstract:
A glass spiral for a watch movement is produced in a glass photo-structurable by ultraviolet , thermal treatment and chemical attack, with a given thickness equal to the height of the turns and a thermal coefficient of Young's modulus (CTE 0) close to zero. An independent claim is also included for the production of the above glass spiral for a watch movement.