Resonator with reduced sensitivity to climatic variations
AssigneeNivarox-FAR S.A.
InventorsPierre CUSIN, Thierry HESSLER, Fatmir SALIHU, Lucie BROCHER
Life of this patent
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Abstract
A compensating balance spring for a thermally compensated sprung balance resonator including a core formed from at least one non-metallic material. The core is partially coated with at least one layer which is moisture proof to render the balance spring less sensitive to climatic variations.
Claims10
1-11. (canceled)
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic Material including quartz,
- wherein the core is partially coated with at least one layer which is resistant and impermeable to moisture and comprises chromium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including quartz,
- wherein the core is partially coated with at leak one layer which is resistant and impermeable to moisture and is made of titanium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including quartz,
- wherein the core is partially coated with at least one layer which is resistant and impermeable to moisture and comprises tantalum to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and comprises chromium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and is made of titanium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and comprises tantalum to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including doped silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and comprises chromium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including doped silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and is made of titanium to render the compensating balance spring less sensitive to climatic variations.
A compensating balance spring for a thermally compensated sprung balance resonator comprising:
- a core formed from at least one non-metallic material including doped silicon on which there is at least partially formed a coating of silicon dioxide,
- wherein the core is partially coated with a layer which is resistant and impermeable to moisture and comprises tantalum to render the compensating balance spring less sensitive to climatic variations.
Dependencies are inferred from the claim text.