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公开(公告)号：US12288631B2
公开(公告)日：2025-04-29
申请号：US17370134
申请日：2021-07-08
Applicant: Essex Furukawa Magnet Wire Japan Co., Ltd.
Inventor： Daisuke Muto , Keiichi Tomizawa , Hideo Fukuda
Abstract: An insulated wire including: a conductor; and an insulating film provided on an outer periphery of the conductor, wherein the insulating film satisfies the following relation between a relative permittivity (ε) of the insulating film at 0.2 atm and a relative permittivity (ε0) of an outermost layer of the insulating film at 0.2 atm. ε≤3.0 and ε0/ε≥1.2.
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2.发明公开公开(公告)号：US20240312668A1
公开(公告)日：2024-09-19
申请号：US18675802
申请日：2024-05-28
Inventor： Katsumi OSADA , Michiaki YAMAHATA , Hideo FUKUDA , Takefumi KAJI , Yuki TAKAHASHI , Eiji KIBA
Abstract: An insulated wire includes an assembled conductor obtained by assembling or twisting a plurality of strands; an insulating layer coating an outer periphery of the assembled conductor; and a filler region that fills a space between the strands and a space between the strands and the insulating layer and includes a thermoplastic resin.
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公开(公告)号：US20220102950A1
公开(公告)日：2022-03-31
申请号：US17536162
申请日：2021-11-29
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Keisuke ATSUMI
Abstract: A peeling device for a resin layer coating a rectangular wire in which an outer side of a metal conductor having a rectangular shape in cross section is coated with the resin layer, including a processing blade configured to peel off the resin layer, a jig configured to hold the rectangular wire, and a position detection means configured to detect a position of a cutting edge of the processing blade with respect to a surface of the metal conductor, in which the cutting edge of the processing blade is caused to penetrate into a predetermined thickness position of the resin layer, and the processing blade and the rectangular wire are relatively moved in a longitudinal direction of the rectangular wire without contact of the cutting edge with the metal conductor to perform treatment of peeling off the resin layer.
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公开(公告)号：US11217364B2
公开(公告)日：2022-01-04
申请号：US16935426
申请日：2020-07-22
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Keiichi Tomizawa , Daisuke Muto , Satoshi Saito
Abstract: An insulated wire containing a thermoplastic resin layer (A) as a covering layer directly or indirectly on a rectangular conductor, in which the insulated wire has at least one protruding part which is continuous in a longitudinal direction of said insulated wire, on a surface of a portion of the thermoplastic resin layer (A), which portion corresponds to at least one side of a cross-section of the insulated wire, said protruding part and a flat part of the surface having the protruding part forms a curved portion with a radius of curvature of 0.01 to 0.75 mm in the cross-section of the insulated wire, and a lateral face of the protruding part has a slope of less than 90° to the flat part of the surface having the protruding part in the cross-section of the insulated wire, a coil produced by processing the insulated wire by winding, and an electric/electronic equipment comprising the coil.
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公开(公告)号：US10978219B2
公开(公告)日：2021-04-13
申请号：US16886453
申请日：2020-05-28
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Keiichi Tomizawa , Akira Tachibana , Keisuke Ikeda , Daisuke Muto , Hideo Fukuda
Abstract: Provided is an assembled wire 10 having a substantially rectangular cross section, and is formed by assembling a plurality of strands 7. Each strand 7 has a conductor portion 11 and a strand insulating layer 13 covering the conductor portion 11. The strand insulating layer 13 preferably contains at least one kind of resin in which 50% weight loss in Tg-DTA occurs at from 300° C. to 500° C. The strand insulating layer 13 contains particles. The particles are particles having volume resistivity of 1×106 Ω·cm or more, and, for example, inorganic substances such as silica, titania, alumina, aluminum nitride, magnesium oxide, silicon nitride, and silicon carbide; and resins such as silicone are applicable.
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Patent Agency Ranking
公开(公告)号：US20250118460A1
公开(公告)日：2025-04-10
申请号：US18982575
申请日：2024-12-16
Applicant: Essex Furukawa Magnet Wire Japan Co., Ltd.
Inventor： Sho YOSHIDA , Daisuke MUTO
Abstract: An insulated wire including a conductor and a resin coating layer covering a periphery of the conductor, wherein the conductor is an aluminum conductor surface-treated with CO2 plasma, and at least a portion of the resin coating layer in contact with the conductor includes at least one kind of a polyaryletherketone resin and a polyphenylene sulfide resin.
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公开(公告)号：US12224562B2
公开(公告)日：2025-02-11
申请号：US17536162
申请日：2021-11-29
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Keisuke Atsumi
Abstract: A peeling device for a resin layer coating a rectangular wire in which an outer side of a metal conductor having a rectangular shape in cross section is coated with the resin layer, including a processing blade configured to peel off the resin layer, a jig configured to hold the rectangular wire, and a position detection means configured to detect a position of a cutting edge of the processing blade with respect to a surface of the metal conductor, in which the cutting edge of the processing blade is caused to penetrate into a predetermined thickness position of the resin layer, and the processing blade and the rectangular wire are relatively moved in a longitudinal direction of the rectangular wire without contact of the cutting edge with the metal conductor to perform treatment of peeling off the resin layer.
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公开(公告)号：US12068090B2
公开(公告)日：2024-08-20
申请号：US17680720
申请日：2022-02-25
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Ayumi Yamamoto , Keisuke Ikeda , Keiichi Tomizawa
Abstract: An insulated wire, including: a conductor and an insulating film covering the conductor; in which at least one insulating layer constituting the insulating film contains: a thermosetting resin A, and a resin B that is ranked lower than the thermosetting resin A in a tribo-electric series.
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公开(公告)号：US11437167B2
公开(公告)日：2022-09-06
申请号：US16909861
申请日：2020-06-23
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Akira Tachibana , Shoichi Danjo
Abstract: An insulated wire includes: a copper alloy conductor; and at least one resin layer directly or indirectly coated on an outer peripheral face of the copper alloy conductor, in which the copper alloy conductor has a composition where a total content of metal components selected from Al, Be, Cd, Mg, Pb, Ni, P, Sn, and Cr is from 0.1 to 2.0 ppm and content of copper is 99.96 mass % or higher, and has a specific texture where an average orientation density in an area where φ2=0 degrees, φ1=0 degrees, and Φ=from 0 degrees to 90 degrees is from 3.0 to less than 35.0, and a maximum orientation density in an area where φ2=35 degrees, φ1=from 45 degrees to 55 degrees, and Φ=from 65 degrees to 80 degrees is from 1.0 to less than 30.0.
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公开(公告)号：US20220181043A1
公开(公告)日：2022-06-09
申请号：US17680720
申请日：2022-02-25
Applicant: ESSEX FURUKAWA MAGNET WIRE JAPAN CO., LTD.
Inventor： Ayumi YAMAMOTO , Keisuke IKEDA , Keiichi TOMIZAWA
Abstract: An insulated wire, including: a conductor and an insulating film covering the conductor; in which at least one insulating layer constituting the insulating film contains: a thermosetting resin A, and a resin B that is ranked lower than the thermosetting resin A in a tribo-electric series.
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