Phosphorescent timepiece component

Patent metadata

Field	Value
Publication number	US-12317973-B2
Application number	US-202117468926-A
Country	US
Kind code	B2
Filing date	Sep 8, 2021
Priority date	Dec 11, 2020
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

A timepiece component including a phosphorescent multilayer structure (3) comprising a front layer (1) with a transparent or translucent polymer matrix and comprising phosphorescent pigments and a reflective underlying layer (2).

First claim

The invention claimed is:

1. A timepiece component comprising a phosphorescent multilayer structure comprising a front layer with a transparent or translucent polymer matrix comprising an elastomer matrix, and comprising phosphorescent pigments and a reflective underlying layer,
wherein at least some of the phosphorescent pigments are on an outermost side of the timepiece component, the outermost side facing away from the reflective underlying layer,
wherein the timepiece component forms a watch bracelet,
wherein the front layer is arranged along an entire length of the bracelet, and
wherein the phosphorescent pigments are evenly distributed throughout the front layer.

2. The timepiece component according to claim 1 , wherein the underlying layer comprises a polymer matrix charged with a reflective pigment.

3. The timepiece component according to claim 2 wherein the reflective pigment comprises titanium oxide.

4. The timepiece component according to claim 2 , wherein the polymer matrix of the underlying layer is compatible with the polymer matrix of the front layer.

5. The timepiece component according to claim 4 , wherein the front layer and the underlying layer comprise a fluoroelastomer.

6. The timepiece component according to claim 1 , wherein the front layer has a thickness comprised between 0.03 mm and 1 mm.

7. The timepiece component according to claim 1 , wherein the elastomer matrix includes a material having an elastic modulus less than 100 MPa.

8. The timepiece component according to claim 1 , wherein the front layer and the reflective underlying layer adhere to each other without using an adhesive.

9. A timepiece component comprising a phosphorescent multilayer structure ( 3 ) comprising a front layer ( 1 ) with a transparent or translucent polymer matrix and comprising phosphorescent pigments and a reflective underlying layer ( 2 ),
wherein the front layer ( 1 ) comprises an elastomer matrix, and
wherein the underlying layer ( 2 ) comprises a polymer matrix charged with a reflective pigment.

10. A timepiece component comprising a phosphorescent multilayer structure comprising a front layer with a transparent or translucent polymer matrix comprising an elastomer matrix, and comprising phosphorescent pigments and a reflective underlying layer,
wherein at least some of the phosphorescent pigments are on an outermost side of the timepiece component, the outermost side facing away from the reflective underlying layer,
wherein the front layer and the underlying layer comprise a fluoroelastomers,
wherein the underlying layer comprises a polymer matrix charged with a reflective pigment, and the reflective pigment comprises titanium oxide,
wherein the timepiece component forms a watch bracelet,
wherein the polymer matrix of the underlying layer is compatible with the polymer matrix of the front layer,
wherein the front layer is arranged along an entire length of the bracelet,
wherein the phosphorescent pigments are evenly distributed throughout the front layer,
wherein the front layer has a thickness comprised between 0.03 mm and 1 mm, and
wherein the elastomer matrix includes a material having an elastic modulus less than 100 MPa.

Assignees

• Swatch Group Res & Dev Ltd

Inventors

• Napoli Sophie
• François Nicolas

Classifications

• G04B37/22

  Materials or processes of manufacturing pocket watch or wrist watch cases {(machines or tools for the manufacture of clockwork cases G04D3/0064, G04D3/0097, G04D3/029; decoration or tools therefor G04B45/0076)} · CPC title

• G04B19/32

  by luminescent substances {(disc or drum shaped indicating means with marks or windows G04B19/04; with numbers or number-marks G04B19/20; cases for housing the electrical parts G04G17/00; projection of hands and/or scales on weighing apparatus G01G19/00; on measuring instruments G01D5/262; for advertising G09F19/18)} · CPC title

• G04B37/225

  Non-metallic cases · CPC title

• G04B45/0015

  Light-, colour-, line- or spot-effects caused by or on stationary parts (change of appearance by exchangeable case parts G04B47/046) · CPC title

• A44C27/001

  Materials for manufacturing jewellery · CPC title