Method for manufacturing a timepiece component

Patent metadata

Field	Value
Publication number	US-12379693-B2
Application number	US-202318299371-A
Country	US
Kind code	B2
Filing date	Apr 12, 2023
Priority date	Jul 13, 2022
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A method for manufacturing a timepiece component. The method includes: providing a timepiece component (1); breaking the timepiece component (1) into a plurality of pieces (10); and depositing the pieces (10) on a support (2) and creating a desired pattern to be reassembled having interstices (1). The support (2) is then transferred into a mould and a preform (3) is placed on the pieces (10). The assembly is then heated to a temperature higher than the vitreous transition temperature of the preform (3) and a force is applied on the preform to fill the interstices (11) and obtain a reassembled timepiece component (1′). The assembly is then cooled below the vitreous transition temperature of the preform (3) to form the reassembled timepiece component (1′) whereupon the timepiece component (1′) is machined to the required dimensions.

First claim

The invention claimed is:

1. A manufacturing method comprising the successive steps of:
providing a timepiece component;
breaking the timepiece component into a plurality of pieces such that the plurality of pieces are separated from each other along at least one virtual plane that intersects a front face of the timepiece component;
depositing the plurality of pieces on a support and creating a desired pattern to be reassembled, the pattern including interstices between the plurality of pieces of the timepiece component, and a shape of an entirety of a front face of the pattern is the same as a shape of an entirety of the front face of the timepiece component before the breaking the timepiece component;
transferring the support into a mold adapted by hot forming and placing a preform on the plurality of pieces of the timepiece component, the mold, the support, the plurality of pieces and the preform forming an assembly;
heating the assembly to a temperature higher than a vitreous transition temperature of the preform and applying a force on the preform to fill the interstices; and
forming a reassembled timepiece component by cooling the assembly below the vitreous transition temperature of the preform, wherein a shape of an entirety of a front face of the reassembled timepiece component is the same as the shape of the entirety of the front face of the timepiece component before the breaking the timepiece component,
wherein the timepiece component is a bezel of a watch, a back of the watch, a bridge of the watch, a plate of the watch, an oscillating mass of the watch, or a watch dial of the watch.

2. The manufacturing method according to claim 1 , wherein the preform is made of an amorphous metal or a partially amorphous metal.

3. The manufacturing method according to claim 2 , wherein the amorphous or partially amorphous metal is a platinum alloy, a palladium alloy, a zirconium alloy, a gold alloy, or a silver alloy.

4. The manufacturing method according to claim 1 , wherein the timepiece component is formed from a material having a melting temperature higher than the vitreous transition temperature of the preform, and
wherein the material includes at least one from among metals, ceramics, glass, sapphire, diamond, mother-of-pearl, silicon, and precious and semi-precious stones.

5. The manufacturing method according to claim 1 , further comprising subjecting the reassembled timepiece component to at least one of the following finishing operations: sanding, brushing, sunray brushing, satin finishing, polishing, and laser matte finishing.

6. The manufacturing method according to claim 1 , wherein the timepiece component is the bezel of the watch.

7. The manufacturing method according to claim 1 , wherein the timepiece component is the watch dial of the watch.

8. The manufacturing method according to claim 1 , wherein the timepiece component is the back of the watch.

9. The manufacturing method according to claim 1 , wherein the timepiece component is the plate of the watch.

10. The manufacturing method according to claim 1 , wherein the timepiece component is the oscillating mass of the watch.

11. The manufacturing method according to claim 1 , further comprising machining the reassembled timepiece component to chosen dimensions.

Assignees

• Swatch Group Res & Dev Ltd

Inventors

• Oberson Loïc
• Netuschill Alexandre
• Lauper Stéphane
• Kissling Gregory
• Bourban Stewes
• Sauret Pierre

Classifications

• Y10T29/49588

  Jewelry or locket making · CPC title

• Y10T29/49579

  Watch or clock making · CPC title

• G04D3/0097

  for components of the means protecting the mechanism against external influences, e.g. cases · CPC title

• G04D3/0053

  for framework components (construction thereof G04B29/00) · CPC title

• B23P15/00

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title