Patent ID: 8994483
Filing Date: 2015-03-31
Classification: H01H,H02K

Abstract:
1. An electromagnetic actuator (A) of the permanent magnet type comprising: a first stator part ( a second stator part formed in a second substrate, at least part of which has rotational symmetry with at least one plane face forming a disk defining an axis of symmetry orthogonal to the disk, and comprising a second series of permanent magnets apparent on at least the disk of the second substrate and uniformly distributed over its surface with a constant angular pitch; each of the permanent magnets having a shape with at least one plane of symmetry orthogonal to its plane and parallel north and south poles parallel to the disk; the contact surfaces of the permanent magnets with the disk being inscribed between two concentric circles concentric with the disk; the plane of symmetry of each magnet being oriented along a radius of these concentric circles; two adjacent permanent magnets of the second series having opposite magnetization directions; the second stator part being disposed parallel to the first stator part so that the axes of symmetry of their disks coincide and so that one pole (S or N) of a magnet of the second series faces an opposite pole of a magnet of the first series so as to create intense magnetic fields in the airgap constituted in this way between the first and second stator parts; at least one pair of superposed rotor parts in the airgaps between the first and second stator parts, each rotor part being formed from an electrically-insulative material substrate comprising at least one track ( in which actuator: