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US 10,894,588 B2Granted
Magnetic phase transition exploitation for enhancement of electromagnets
AssigneeThales Holdings UK PLC
InventorsSasha Roberts, Andrew Bond
Life of this patent
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Abstract
An electromagnet can be used to provide a controlled magnetic field, for example for the purpose of minesweeping. The electromagnet is constructed of a material which has a Curie temperature, such that the electromagnet can be stored at a temperature above the Curie temperature, but deployed below the Curie temperature in use.
Claims16
A system for emitting a controlled magnetic field, said system comprising:
- an electromagnet comprising a magnetic core, wherein the core comprises a ferromagnetic or ferrimagnetic material;
- storage means for storing said electromagnet with electrical power of the electromagnet switched off;
- and
- heating means for heating said magnetic core,
- wherein the heating means are operable to heat the magnetic core above its Curie temperature for storage of the electromagnet by said storage means while the electrical power of the electromagnet is switched off.
2 more elements
A method of storing an electromagnet, wherein said electromagnet comprises a magnetic core, wherein said magnetic core comprises ferromagnetic or ferrimagnetic material, the method comprising:
- switching off electrical power to the electromagnet;
- heating the magnetic core to a temperature above the Curie temperature of the magnetic core;
- and
- storing the magnetic core at said temperature above the Curie temperature of the magnetic core while the electrical power of the electromagnet is switched off.
1 more element
Dependencies are inferred from the claim text.