# US 11,906,932 B2 · Dial for timepieces

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- Number: US 11,906,932 B2
- Document ID: US11906932B2
- Status: Granted
- Kind: B2
- Application number: 16/902,474
- Filed: 2020-06-16
- Published: 2021-02-04
- Granted: 2024-02-20
- Earliest claimed: 2019-07-31
- Assignees: Omega SA
- Applicants: Omega SA
- Inventors: Frederic Jeanrenaud; Gregory Kissling
- Web page: https://patentgrep.com/patent/US11906932B2

## CPC

- G04B 19/065: {with several parts}
- G04B 19/12: Selection of materials for dials or graduations {markings}
- G04B 19/08: Geometrical arrangement of the graduations
- G04B 47/042: {Fastening of jewels and the like (set on or into numbers G04B19/103; jewel bearings G04B31/008; setting of jewels and tools therefor A44C; devices for setting jewel bearings G04D3/04)}
- G04D 3/0048: {for dials (construction thereof G04B19/10, G04B19/12)}
- G04D 3/0092: {for components of the time-indicating mechanism, e.g. dials}
- G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)
- G04D: APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES

## Abstract

A dial for a timepiece, preferably a watch, the dial being provided with a relief portion which is made as an assembly of pieces on different levels, juxtaposed on a base, such that the relief portion is formed by the upper surfaces of the pieces. A method for manufacturing the dial with several separate pieces, the upper surfaces of the pieces being subjected to a polishing step and/or possibly an enamelling step. The pieces are then cut along a defined contour and then assembled edge-to-edge on a base, so as to create the relief portion.

## Claims

### Claim 1

A dial for a timepiece, the dial comprising:
a base; and
an assembly of elementary pieces disposed on the base, the assembly of elementary pieces forming a relief portion and including
a first central elementary piece having a first thickness, and
at least one second elementary piece with an upper surface which is inclined between a first thickness and a second thickness,
wherein the relief portion is formed by an upper surface of the first central elementary piece and the upper surface of the at least one second elementary piece, and
wherein the relief portion includes a straight edge defined by a junction between apex lines of the first central elementary piece and the at least one second elementary piece.

### Claim 2 (depends on 1)

The dial according to claim 1, wherein the assembly of elementary pieces extends over an entire surface of the dial.

### Claim 3 (depends on 1)

The dial according to claim 1, wherein the assembly of elementary pieces is situated on one portion of the dial.

### Claim 4 (depends on 1)

The dial according to claim 1, wherein the first central elementary piece and the at least one second elementary piece are made of a material with an HV hardness greater than 500.

### Claim 5 (depends on 4)

The dial according to claim 4, wherein the first central elementary piece and the at least one second elementary piece are made of sapphire, alumina, zirconia or natural stones.

### Claim 6

A timepiece comprising:
a dial, the dial comprising
a base; and
an assembly of elementary pieces disposed on the base, the assembly of elementary pieces forming a relief portion and including
a first central elementary piece having a first thickness, and
at least one second elementary piece with an upper surface which is inclined between a first thickness and a second thickness,
wherein the relief portion is formed by an upper surface of the first central elementary piece and the upper surface of the at least one second elementary piece, and
wherein the relief portion includes a straight edge defined by a junction between apex lines of the first central elementary piece and the at least one second elementary piece.