IP Library Granted Patent US 12702203
Granted Patent B2
US 12702203 · App. 18/005,360 · Granted Aug 11, 2026

Article of jewelry

Inventors: Francisco Dias (Saint-Sulpice, CH); Sergio Dos Santos (Fleurier, CH)
Assignee: CHOPARD TECHNOLOGIES SA
A44C17/0291
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Quick Facts
Patent No.
US 12702203
App. No.
18/005,360
Granted
Aug 11, 2026
Kind
B2
Abstract

An article of jewelry is proposed, comprising at least one transparent wall forming a housing arranged to receive at least one precious or semi-precious stone immersed and movable in a substantially transparent liquid in the housing, and at least one part movable in the liquid and having the same refractive index as the liquid, the movable part immersed in the liquid being substantially optically indiscernible. The housing is delimited by two walls, of which the internal faces are preferably parallel to each other. The stone is inserted into the part to form a movable decorative element, the movable part immersed in the liquid being substantially optically indiscernible and comprising an axis of revolution and two guide surfaces adjacent respectively to the internal faces and allowing said movable decorative element to move freely in translation and in rotation in the liquid around said axis of revolution inside the housing.

Claims (26)

1 . An article of jewelry comprising:

at least one transparent wall which forms a housing provided to receive at least one precious or semi-precious stone which is immersed and movable in a transparent liquid in said housing; and

at least one part which is movable in the liquid and which has the same refractive index as the liquid, said part being immersed in the liquid,

wherein the housing is delimited by an upper wall formed by said transparent wall and a lower wall, the internal faces of said upper and lower walls are preferably parallel to each other, and in that the stone is inserted into the part in order to form a movable decorative element, said part is immersed in the liquid and has an axis of revolution and two guide surfaces which are respectively adjacent to the internal faces and which allow said movable decorative element to move freely in translation and in rotation in said liquid about said axis of revolution inside said housing.

2 . The article of jewelry as claimed in claim 1 , in which the at least one part is a socket or a sphere surrounding the stone.

3 . The article of jewelry as claimed in claim 1 , in which there is at least one space, between the interior of the part and the stone, filled with the liquid.

4 . The article of jewelry as claimed in claim 1 , in which the part is arranged to receive a plurality of stones.

5 . The article of jewelry as claimed in claim 4 , in which the stones have different densities and are arranged so as to orient the movements of the part.

6 . The article of jewelry as claimed in claim 1 , in which the part has a drag coefficient in the liquid which determines the movement of the movable decorative element.

7 . The article of jewelry as claimed in claim 1 , in which the movable decorative element is arranged to move in a corridor or along a path defined by protrusions or hollows arranged on at least one of said walls.

8 . The article of jewelry as claimed in claim 1 , in which the stone is held in the part by a plurality of arms which extend above a body of the part and which set the stone, these arms leaving between them, and above the body of the part, lateral openings allowing the sides of the stone, between the arms, to be in direct contact with the liquid, and said guide surface is formed by the free ends of said arms in the form of separate contact zones spaced apart from one another around the periphery of the open external face of the part.

9 . The article of jewelry as claimed in claim 1 , in which the stone is a precious stone, in particular a diamond.

10 . The article of jewelry as claimed in claim 1 , in which the precious or semi-precious stone and the part have a corresponding shape, among others generally cylindrical, oval, square, triangular or asymmetrical.

11 . The article of jewelry as claimed in claim 1 , in which the clearance between the height of the movable decorative element and the opposite internal faces of said walls is from 0.05 to 0.3 mm and preferably from 0.05 to 0.1 mm.

12 . The article of jewelry as claimed in claim 1 , in which the parallel internal faces of the walls are flat.

13 . The article of jewelry as claimed in claim 1 , in which the parallel internal faces of the walls are curved.

14 . The article of jewelry as claimed in claim 1 , in which the walls are made of sapphire or a material having a hardness comparable to that of sapphire.

15 . The article of jewelry as claimed in claim 1 , in which said two walls are transparent.

16 . The article of jewelry as claimed in claim 1 , in the form of a watch; a writing instrument; a jewel; a spectacle frame; or a fine-leatherwear article.

17 . The article of jewelry as claimed in claim 2 , in which said part forming a socket has a cylinder shape.

18 . The article of jewelry as claimed in claim 1 , in which said stone is either in said part in the form of a solid sphere, or is included into said part in the form a hollow sphere surrounding said stone and filled with said liquid.

19 . The article of jewelry as claimed in claim 1 , wherein the movable decorative element is more than one movable decorative element, each movable decorative element having a shape and dimension different from the other more than one movable decorative elements.

20 . An article of jewelry comprising:

a housing comprising a transparent upper wall and a lower wall spaced apart from the upper wall, the housing being filled with a transparent liquid;

a decorative element within the housing and comprising a first socket and a stone, the stone being in the first socket and the decorative element being immersed in the liquid, the first socket having a same refractive index as the liquid, the transparent liquid in the housing configured to impact a speed of movement of the decorative element; and

a second socket within the housing and lacking a stone, the second socket having a same refractive index as the liquid and being immersed in the liquid, the second socket configured to impact a movement of the decorative element.