INDUCTOR DEVICE WITH LIGHT WEIGHT CONFIGURATION

    公开(公告)号:US20190164680A1

    公开(公告)日:2019-05-30

    申请号:US16199513

    申请日:2018-11-26

    申请人: PREMO, S.A.

    摘要: Inductor device comprising a rectangular prismatic electro-insulating support (10) with three pairs of parallel outer faces (11) defining orthogonal axis (X, Y, Z), and defining eight corners; a rectangular prismatic magnetic core (20) supported by said electro-insulating support (10); and three conductor wire windings (DX, DY, DZ) wound around the three axis (X, Y, Z) surrounding the magnetic core (20); wherein the magnetic core (20) is a hollow magnetic core (20) composed by three pairs of sheets (21), each pair of sheets (21) being composed by two parallel sheets (21) facing each other perpendicular to one of said axis (X, Y, Z), and wherein each sheet (21) is made of a magnetic material, said sheet (21) being in contact and attached to the electro-insulating support (10) and being in contact with the surrounding orthogonal sheets (21).

    LONG RANGE LOW FREQUENCY ANTENNA
    4.
    发明申请

    公开(公告)号:US20210376476A1

    公开(公告)日:2021-12-02

    申请号:US17318439

    申请日:2021-05-12

    申请人: PREMO, S.A.

    IPC分类号: H01Q11/04 H01Q7/08 H01Q11/08

    摘要: A long range low frequency antenna having an elongated magnetic core; a coil surrounding the elongated magnetic core; a bobbin; where the elongated magnetic core is introduced in a cavity of the bobbin; and a housing overmolded on the bobbin in a waterproof manner. The antenna also comprises at least one damper located at one extreme of the elongated magnetic core. The at least one damper is made of an elastic and thermally-stable compound having a resin and a first filler including a natural mineral filler. Therefore, longitudinal dilatations, shrinkage, mechanical shocks, and vibrations of the elongated magnetic core are absorbed by the at least one damper, avoiding an impact over an inductance variation of the coil.