Timepiece or piece of jewellery comprising an identification coding

Abstract

A watch or jewelry item (10) comprising at least one engraved mark (20), characterized in that the engraved mark (20) comprises at least: - a first zone engraved at a first depth (P1), - a second zone engraved at a second depth (P2), the first depth (P1) and the second depth (P2) forming discrete values ​​of an identification code for the watch or jewelry item (10).

Description

Abstract A watch or jewelry piece (10) comprising at least one engraved mark (20), characterized in that the engraved mark (20) comprises at least: - a first zone engraved at a first depth (P1), - a second zone engraved at a second depth (P2), the first depth (P1) and the second depth (P2) forming discrete values ​​of an identification code for the watch or jewelry piece (10).

Claims

1. A timepiece or piece of jewelry (10) including at least one engraved mark (20), characterized in that the engraved mark (20) comprises at least: - a first zone engraved at a first depth (P1), - a second zone engraved at a second depth (P2), in which: - the first depth (P1) and the second depth (P2) and / or - a change in depth between the first depth (P1) and the second depth (P2), form(s) discrete values ​​of an identification code for the watch or jewelry piece (10), in which the first depth (P1) and the second depth (P2) have a difference in depth within a range of values ​​from 50 µm to 15 µm.

2. A watch or jewelry item (10) according to claim 1 wherein the first engraved area and the second engraved area: - are formed in the same material of the watch or jewelry item (10), and / or - open onto the same material of the watch or jewelry item (10), and / or - have a background of the same color as the watch or jewelry item (10), and / or - are formed on the same component of the watch or jewelry item (10).

3. A timepiece or jewelry item (10) according to any one of claims 1 to 2, wherein the engraved mark (20) comprises distinct visual signs, such as distinct characters or logos, and wherein: - the first engraved area forms or forms part of a first visual sign, - the second engraved area forms or forms part of a second visual sign.

4. A timepiece or jewelry item (10) according to any one of claims 1 to 3, wherein the engraved mark (20) comprises at least one unitary visual sign, such as a unitary character or a unitary logo, and wherein the first engraved area is adjacent to the second engraved area, the first engraved area and the second engraved area forming at least partially the unitary visual sign.

5. A watch or jewelry item (10) according to claim 4, wherein the first engraved area is separated from the second engraved area by a demarcation following a predetermined pattern forming an additional code.

6. A watch or jewelry item (10) according to any one of claims 1 to 5, wherein the engraved mark (20) has a predetermined spatial mesh defined by boundary zones (F1-F7) of meshes separating engraving meshes, and wherein the identification coding is defined by changes in engraving depth, and / or by directions of change in engraving depth, in the boundary zones (F1-F7) of mesh, and preferably wherein at least part of the identification coding is defined solely by changes in depth, and / or by directions of change in engraving depth in the boundary zones (F1-F7) of mesh.

7. A watch or jewelry item (10) according to any one of claims 1 to 5, wherein the engraved mark (20) has a predetermined spatial mesh defined by boundary zones (F1-F7) of meshes separating engraving meshes, and wherein a relative position in each mesh of the first engraved zone at a first depth (P1) and / or of the second engraved zone at a second depth (P2) provides additional coding.

8. A watch or jewelry item (10) according to claim 6 or 7, wherein the predetermined spatial mesh has a starting engraving mesh defined by: - ​​a predetermined starting engraving surface, and / or - a predetermined starting engraving depth and / or - a sequence of changes in predetermined starting engraving depth, and / or - a predetermined starting engraving pattern.

9. A watch or jewelry item (10) according to any one of claims 1 to 8, wherein: - the first engraved area forms a reference mark, - a relative position of the second engraved area with respect to the first engraved area provides at least part of the identification coding.

10. A watch or jewelry item (10) according to any one of claims 1 to 9, wherein the engraved mark (20) comprises at least a third zone engraved at a third depth (P3) forming a discrete value of the identification coding of the watch or jewelry item (10).

11. A watch or jewelry item (10) according to any one of claims 1 to 10, wherein the engraved mark (20) comprises: - a plurality of first zones engraved at the first depth (P1) and separated by at least one second zone engraved at the second depth (P2), and / or - a plurality of second zones engraved at the second depth (P2) and separated by at least one first zone engraved at the first depth (P1).

12. A watch or jewelry item (10) according to any one of claims 1 to 11, wherein the first depth (P1) is distinct from the second depth (P2).

13. A watch or jewelry item (10) according to any one of claims 1 to 12, wherein the first engraved area and / or the second engraved area is formed by laser engraving.

14. A watch or jewelry item (10) according to any one of claims 1 to 13, wherein the first engraved area and / or the second engraved area is formed by electro-erosion engraving.

15. A watch or jewelry item (10) according to any one of claims 1 to 14, wherein the first engraved area and / or the second engraved area is formed by a plastic deformation operation by forging or pressing.

16. A watch or jewelry item (10) according to any one of claims 1 to 15, comprising a metal piece and wherein the first engraved area and the second engraved area are formed on the metal piece.

17. A watch or jewelry item (10) according to any one of claims 1 to 16, wherein the first engraved area and the second engraved area are formed on a part of the watch or jewelry item (10) visible to a user.

18. A watch or jewelry item (10) according to claim 17, wherein the identification coding of the watch or jewelry item (10) formed by the first depth (P1) and the second depth (P2) is invisible to the naked eye for the user.

19. A method for authenticating a watch or jewelry item (10), comprising the steps of: - providing a watch or jewelry item (10) according to any one of claims 1 to 18, - taking a depth measurement of the engraving on or along the engraved mark (20), so as to identify at least one alternation of the first depth (P1) and the second depth (P2) to reconstruct an identification code read on the watch or jewelry item (10), - comparing the identification code read on the watch or jewelry item (10) with an expected identification code, and / or searching for the identification code read on the watch or jewelry item (10) among identification codes stored in a database.

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