Electromagnetic induction device configured as a multiple magnetic circuit
AssigneeThales
InventorsEric Touzet, Nicolas Potelle
Life of this patent
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Abstract
An electromagnetic induction device comprises a closed magnetic circuit, without air gap, of which at least one first part is substantially rectilinear and surrounded by a sleeve, the sleeve being surrounded by an electrical conductor which comprises at least one metal sheet electrically insulated on at least one of its faces, wherein at least the first part of the magnetic circuit has a section of circular form.
Claims11
An electromagnetic induction device (1) comprising a closed magnetic circuit (2), without air gap, of which at least one first part (11) extends longitudinally along a longitudinal axis, the longitudinal axis being substantially rectilinear, said first part being surrounded by a sleeve (3), said sleeve (3) being surrounded by an electrical conductor (4) which comprises at least one metal sheet electrically insulated on at least one of its faces, wherein
- said first part (11) of said closed magnetic circuit (2) has a section of circular form;
- said closed magnetic circuit (2) is layered by several layers of magnetic material separated by an electrical insulation, and
- said sleeve (3) comprises an inner face (7) having a circular section closely fitting the form of said magnetic circuit (2) to allow a rotation of the sleeve around the closed magnetic circuit about the longitudinal axis of the first part, and an outer face (8) comprising curved parts (19) and planar parts (20).
The electromagnetic induction device (1) as claimed in the preceding claim, wherein at least one said sleeve (3) comprises a main axis, an inner face (7) of which the form of a section is circular and closely fits the form of said magnetic circuit (2), and an outer face (8) defined by a set of straight lines parallel to said main axis, comprising said curved parts (19) and said planar parts (20).
Dependencies are inferred from the claim text.