Part for a timepiece movement
AssigneeOmega SA
InventorsCedric Von Gruenigen, Christian Charbon, Marco Verardo
Life of this patent
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Abstract
The invention relates to a pivot pin for a timepiece movement including at least one pivot at at least one of the ends thereof, characterized in that said at least one pivot is formed of a composite material having a metallic matrix including at least one metal selected from among nickel, titanium, chromium, zirconium, silver, gold, platinum, silicon, molybdenum, aluminum or an alloy of the above metals, said matrix being charged with hard particles selected from among WC, TiC, TaC, TiN, TiCN, Al2O3, ZrO2, Cr2O3, SiC, MoSi2, Al N or a combination thereof, so as to limit the sensitivity of the pin to magnetic fields. The invention concerns the field of timepiece movements.
Claims13
A pivot pin for a timepiece movement, comprising:
- at least one pivot at at least one end of the pivot pin,
- wherein said at least one pivot is formed of a composite material having a nonferrous metallic matrix including at least one metal selected from among zirconium, silver, gold, platinum, silicon, molybdenum, aluminium, or an alloy of the above metals, said matrix being charged with hard particles selected from among TaC, TiN, TiCN, Al2O3 ZrO2, Cr2O3, SiC, MoSi2, AlN, or a combination thereof, so as to limit the sensitivity of the pin to magnetic fields.
A pivot pin for a timepiece movement, comprising:
- at least one pivot at at least one end of the pivot pin,
- wherein said at least one pivot is formed of a composite material having a nonferrous metallic matrix including 8% nickel, said matrix being charged with hard particles comprising 92% WC, so as to obtain a high resistance to wear, and wherein the hardness of the composite material is more than 1300 HV.
Dependencies are inferred from the claim text.