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US 12,565,711 B2Granted
Pinion shaft, watch mechanism, watch or measurement device without a magnetic signature
AssigneeOmega SA
InventorGuillaume Gaugey
Life of this patent
Estimating the term…
Abstract
A mechanical watch or measurement instrument including metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.
Claims14
A mechanical watch mechanism comprising:
- metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01, and wherein one of the parts is a shaft composed of metal,
- wherein the shaft is made of beryllium copper and coated with an amagnetic coating which is applied to the beryllium copper to increase a hardness of the beryllium copper,
- wherein the shaft is mounted on gemstones,
- wherein the coating is a nickel layer having a phosphorus fraction,
- wherein nickel layer is an amorphous nickel layer,
- wherein the nickel layer is a chemical nickel layer, and
- wherein the shaft is a balance wheel shaft for rotatable mounting of the balance wheel, an escapement piece shaft for rotatable mounting of the escapement piece, a drive shaft for rotatable mounting of a drive mechanism, or a winding shaft for rotatable mounting of a winding mechanism.
4 more elements
A method for producing a mechanical watch mechanism, comprising:
- producing individual parts of the mechanical watch mechanism, wherein the individual parts are at least partially composed of metal and each individual part has a relative magnetic permeability of less than 1.01, and wherein one of the individual parts is a shaft composed of metal, the shaft is made of beryllium copper and coated with an amagnetic coating which is applied to the beryllium copper to increase a hardness of the beryllium copper, wherein the coating is a nickel layer having a phosphorus fraction, wherein the nickel layer is an amorphous nickel layer, wherein the nickel layer is a chemical nickel layer, and wherein the shaft is a balance wheel shaft for rotatable mounting of the balance wheel, an escapement piece shaft for rotatable mounting of the escapement piece, a drive shaft for rotatable mounting of a drive mechanism, or a winding shaft for rotatable mounting of a winding mechanism;
- and
- assembling the individual parts to form a mechanical watch mechanism, the assembling including mounting the shaft on gemstones.
Dependencies are inferred from the claim text.