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US 12,449,768 B2Granted
Horology component
AssigneeRolex SA
InventorsDenis Favez, Stefano Hénin
Life of this patent
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Abstract
A horology component based on a fragile material, wherein said component comprises at least one surface part of fragile material covered with a coating (10) comprising at least two layers CE of elastic material (11) separated by a layer CR of a material (12) stronger than the elastic material (11).
Claims23
A horology component based on a fragile material,
- wherein the component comprises at least one surface part of fragile material covered with a coating,
- wherein the coating comprises at least two layers each made of a respective elastic material and separated by an intermediate layer made of a material stronger than the elastic material,
- wherein a respective material of each of the at least two layers of elastic material is selected from the group consisting of parylene, PTFEs, acrylic resins, silicone, and polymers from the urethane family,
- wherein the stronger material has an elastic modulus greater than or equal to an elastic modulus of the elastic material of each of the adjacent layers made of elastic material increased by 50%,
- wherein the elastic modulus of the stronger material is lower than an elastic modulus of the fragile material,
- wherein the layer of stronger material has a thickness greater than or equal to 15 nm and less than or equal to 150 nm.
3 more elements
A horology component based on a fragile material,
- wherein the component comprises at least one surface part of fragile material covered with a coating,
- wherein the coating comprises at least two layers each made of a respective elastic material and separated by an intermediate layer made of a material stronger than the elastic material,
- wherein the stronger material has an elastic modulus (i) greater than or equal to an elastic modulus of the elastic material of each of the adjacent layers made of elastic material increased by 50%, and (ii) lower than an elastic modulus of the fragile material,
- wherein the layer of stronger material has a thickness greater than or equal to 15 nm and less than or equal to 150 nm,
- wherein the stronger material is silicon oxide or silicon nitride.
2 more elements
A horology component based on a fragile material,
- wherein the component comprises at least one surface part of fragile material covered with a coating,
- wherein the coating comprises at least two layers each made of a respective elastic material and separated by an intermediate layer made of a material stronger than the elastic material,
- wherein the stronger material has an elastic modulus greater than or equal to an elastic modulus of the elastic material of each of the adjacent layers made of elastic material increased by 50%,
- wherein the component is selected from the group consisting of toothed wheels, escapement wheels, hands, impulse pins, pallets, levers, pallet stones, flat springs, flexible-blade systems, and other components having a spring function,
- wherein a respective material of each of the at least two layers of elastic material is selected from the group consisting of parylene, PTFEs, acrylic resins, silicone, and polymers from the urethane family.
2 more elements
Dependencies are inferred from the claim text.