Pinion shaft, watch mechanism, watch or measurement device without a magnetic signature
AssigneeOmega SA
InventorGuillaume Gaugey
Life of this patent
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Abstract
A mechanical watch or measurement instrument having metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.
Claims18
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, wherein one of the parts is a shaft composed of metal, wherein the shaft is coated with an amagnetic coating, wherein the coating is a nickel layer and wherein the nickel layer is a chemical nickel layer with a hardness of greater than 600 HV, wherein the at least one shaft is produced from a beryllium copper and is hardened with a coating which is applied to the beryllium copper and which increases the hardness of the beryllium copper, and wherein the shaft is a balance wheel shaft for the rotatable mounting of the balance wheel, an escapement piece shaft for the rotatable mounting of the escapement piece, a drive shaft for the rotatable mounting of the drive mechanism, or a winding shaft for the rotatable mounting of the winding mechanism.
A method for producing a mechanical watch mechanism, having:
- producing the 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 wherein one of the parts is a shaft composed of metal, wherein the shaft is coated with an amagnetic coating, wherein the coating is a nickel layer and wherein the nickel layer is a chemical nickel layer with a hardness of greater than 600 HV, wherein the at least one shaft is produced from a beryllium copper and is hardened with a coating which is applied to the beryllium copper and which increases the hardness of the beryllium copper, and wherein the shaft is a balance wheel shaft for the rotatable mounting of the balance wheel, an escapement piece shaft for the rotatable mounting of the escapement piece, a drive shaft for the rotatable mounting of the drive mechanism, or a winding shaft for the rotatable mounting of the winding mechanism;
- and
- assembling the individual parts to form a mechanical watch mechanism.
A pinion shaft comprised of metal for a mechanical watch mechanism or measurement instrument, having a relative magnetic permeability of less than 1.01, wherein the shaft is coated with an amagnetic coating, wherein the coating is a nickel layer and wherein the nickel layer is a chemical nickel layer with a hardness of greater than 600 HV, wherein the shaft is produced from a beryllium copper and is hardened with a coating which is applied to the beryllium copper and which increases the hardness of the beryllium copper, and wherein the shaft is a balance wheel shaft for the rotatable mounting of the balance wheel, an escapement piece shaft for the rotatable mounting of the escapement piece, a drive shaft for the rotatable mounting of the drive mechanism, or a winding shaft for the rotatable mounting of the winding mechanism.
Dependencies are inferred from the claim text.