Montres Rado S.a.

The Swatch Group Research and Development Ltd

Asulab S.a.

Comadur Sa

Christian Verdon

Gilles Derriey

Stewes Bourban

Giancarlo Poli

Rudolf Dinger

Michael Bach

Naci Basturk

Sylvain Boucard

Sébastien Bolzt

Alain Geiser

Steve Bourban

Allessandra Furetta

Alessandra Furetta

A skeleton watch includes a horological movement housed in a watch case, the horological movement being arranged to rotate at least one hand, the horological movement being covered by a dial, and the dial being disposed between the horological movement and the at least one hand. The dial includes a photochromic plate so that the horological movement is visible when the photochromic plate is exposed to an amount of UV radiation below a first threshold value and the horological movement is masked when the photochromic plate is exposed to an amount of UV radiation above a second threshold value.

Watch

A transparent substrate made of a transparent material resistant to temperatures higher than 500&#xb0; C., such as sapphire, includes recesses in at least one of its faces and/or a groove machined into its thickness, that are covered with opaque, translucent or transparent enamel depositions that may or may not be colored, depending upon the pigments used in the enamel composition.

Technical or decorative piece associating a transparent material and a silicon based amorphous material and method of manufacturing the same

A transparent substrate () made of a transparent material resistant to temperatures higher than 500&#xb0; C., such as sapphire, includes recesses () in at least one of its faces () and/or a groove () machined into its thickness, that are covered with opaque, translucent or transparent enamel depositions (to) that may or may not be colored, depending upon the pigments used in the enamel composition. The invention is applicable to a dial of a timepiece.

Housing insert for a spacer of a ceramic link for a bracelet, including a housing for receiving a spacer having one end. It includes an external machined portion arranged to cooperate with this housing and an internal machined portion including a substantially cylindrical bearing area, arranged to closely receive this end and having a smaller diameter than that of this end. An equipped link includes such a link and such an insert of this type fixed in this housing. A bracelet including includes a plurality of equipped lateral links into which removably mounted spacers are driven. This bracelet includes intermediate links assembled to pivot freely relative to these spacers or relative to pins pivotably mounted in these equipped links.

Watch bracelet with ceramic links

The case includes a middle part () and a back cover () delimiting a compartment () closed by a glass (), made of a transparent material resistant to temperatures above 500&#xb0; C., said glass being bonded or welded at joint zones () at least partially covering the shoulder () of the middle part (). It is characterized in that the inner face () of the glass () includes an enamel deposition () formed on the zones of the joints () with the shoulder () of the middle part (), either in a hollow (), or on the surface of said inner face ().

Case closed by a glass with an invisible joint or one that can be decorated and manufacturing methods

The display unit () equips a portable instrument, such as a wristwatch () with hands () for indicating the time. The unit comprises at least one display cell () which comprises a transparent front substrate () having first transparent electrodes () on an interior face, a transparent rear substrate () having at least one transparent second electrode () on an interior face and a fixing frame () for the two substrates in order to define a closed space between the substrates. A substance (), the optical or physical properties of which can be modified between the electrodes which are activated by a difference of potentials applied via control means, occupies the closed space between the first and second electrodes. Via the action of the control means, the display cell () makes it possible to display information, for example temporal information. The display unit () comprises also a plurality of transparent or semi-transparent stones which are supported on or in a transparent or semi-transparent support (). The support is disposed on a front visible face of the display cell or alternatively on a rear face of the display cell in order to combine the information of the cell in a first display state with light refraction through visible rigid elements and/or light reflection on or in the visible rigid elements.

Display unit with decorative effects for a portable instrument, such as a watch

The crystal (), in the inner surface of which contact zones () are structured, includes close to its edge a hollow () machined in one of its faces () or a groove () machined in its thickness and provided with an enamel deposition () for concealing said contact zones () after bonding.

Device for assembling a touch-type crystal on a case

The bracelet () is formed of several juxtaposed links () made of rigid material and a flexible core () onto which the links are threaded. The flexible core () is formed over a part of its length of flexible elements () removably assembled one after the other. Each flexible element comprises on two opposite sides a first assembling portion () and a second assembling portion () complementary to the first assembling portion. The elements can be assembled one after the other by fitting the first and second assembling portions together to form a flexible strip. The links () are positioned on the flexible core to hold the flexible elements in their assembled position.

Bracelet with links made of rigid material on a flexible core

A method for obtaining a finished or semi-finished zirconia-based article having a gold metallic external appearance, the method including the steps of: providing at least one zirconia article previously shaped into its finished or semi-finished shape; partially reducing the zirconia forming said article; placing said article in a reaction vessel in which a plasma is generated from ammonia, or a mixture of nitrogen and hydrogen, or a combination of this gas and this mixture; and maintaining the article in the plasma for a period of at least 5 minutes, while adjusting the conditions so that the average temperature of the article is settled between 500 and 900&deg; C.

Growing community of inventors

Boussens, Switzerland

Christian Verdon