MAGNETIC DEVICE WITH A STATOR CONFINEMENT FOIL

Abstract

The invention relates to a magnetic device (100) comprising a housing (140) containing at least one magnetic sub-assembly (110, 110') shaped to cooperate at the level of at least one air gap (150, 150'), with at least one element in translational motion or in rotational motion (120, 120') such as a rotor, to produce a mechanical force and / or an induced electrical voltage, said magnetic sub-assembly being fluidly isolated from said element by means of a stator confinement ring (160), characterized in that said ring is made up of: - a first material (161) at the level of said air gap, said first material having a magnetic permeability μ161 less than 2, as well as an electrical resistivity Ro161 greater than 50.10-8 Ohm.m, - of a second or several other materials (162) outside said air gap, different from said first material and having an elastic resistance Re162 greater than 1.2 times the elastic resistance Re161 of the first material. See Figure 3.

Images