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US 9,727,026 B2Granted
Magnetic centring device
AssigneeMontres Breguet S.A.
InventorsCamille Tadla, Philippe Poux, Jean-Philippe Rochat, Davide Sarchi
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Abstract
Magnetic centring device for micromechanical applications, including a magnet and a magnetic flux conduction device arranged on the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having high magnetic permeability, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance.
Claims30
A magnetic centring device for micromechanical applications, comprising:
- a magnet;
- a magnetic flux conduction device arranged on the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having a maximum relative magnetic permeability equal to or greater than 100, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance;
- and
- a non-magnetic support made of a material having low magnetic permeability, the non-magnetic support being positioned above the magnet,
- wherein the central magnetic flux conduction disc and the peripheral area are positioned between an upper surface of the magnet and a lower surface of the non-magnetic support, the peripheral area being a magnetic flux conduction material arranged on the upper surface of the magnet or on the lower surface of the non-magnetic support.
2 more elements
A watch movement, comprising:
- a magnetic centring device, including a magnet, a magnetic flux conduction device arranged on the magnet, and a non-magnetic support made of a material having low magnetic permeability, the non-magnetic support being positioned above the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having a maximum relative magnetic permeability equal to or greater than 100, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance, the central magnetic flux conduction disc and the peripheral area being positioned between an upper surface of the magnet and a lower surface of the non-magnetic support, the peripheral area being a magnetic flux conduction material arranged on the upper surface of the magnet or on the lower surface of the non-magnetic support.
A watch, comprising:
- a magnetic centring device, including a magnet, a magnetic flux conduction device arranged on the magnet, and a non-magnetic support made of a material having low magnetic permeability, the non-magnetic support being positioned above the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having a maximum relative magnetic permeability equal to or greater than 100, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance, the central magnetic flux conduction disc and the peripheral area being positioned between an upper surface of the magnet and a lower surface of the non-magnetic support, the peripheral area being a magnetic flux conduction material arranged on the upper surface of the magnet or on the lower surface of the non-magnetic support.
A magnetic centring device for micromechanical applications, comprising:
- a magnet;
- and
- a magnetic flux conduction device arranged on the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having a maximum relative magnetic permeability equal to or greater than 100, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance, the central magnetic flux conduction disc and the peripheral area being formed directly on an upper surface of the magnet, the peripheral area being a magnetic flux conduction material.
Dependencies are inferred from the claim text.