EP1296336B1 - Varnish-coated wire - Google Patents

Varnish-coated wire Download PDF

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Publication number
EP1296336B1
EP1296336B1 EP02450180.1A EP02450180A EP1296336B1 EP 1296336 B1 EP1296336 B1 EP 1296336B1 EP 02450180 A EP02450180 A EP 02450180A EP 1296336 B1 EP1296336 B1 EP 1296336B1
Authority
EP
European Patent Office
Prior art keywords
wire
round
coil
axis
lacquer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP02450180.1A
Other languages
German (de)
French (fr)
Other versions
EP1296336A1 (en
Inventor
Werner Dipl.-Ing. Fidi
Dipl.Ing. Dr. Lenhard-Backhaus Hugo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AKG Acoustics GmbH
Original Assignee
AKG Acoustics GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AT20011492 priority Critical
Priority to AT0149201A priority patent/AT412682B/en
Application filed by AKG Acoustics GmbH filed Critical AKG Acoustics GmbH
Publication of EP1296336A1 publication Critical patent/EP1296336A1/en
Application granted granted Critical
Publication of EP1296336B1 publication Critical patent/EP1296336B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/323Insulation between winding turns, between winding layers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/077Deforming the cross section or shape of the winding material while winding
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/327Encapsulating or impregnating
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12Insulating of windings
    • H01F41/127Encapsulating or impregnating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/4902Electromagnet, transformer or inductor
    • Y10T29/49071Electromagnet, transformer or inductor by winding or coiling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49123Co-axial cable
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49194Assembling elongated conductors, e.g., splicing, etc.
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49194Assembling elongated conductors, e.g., splicing, etc.
    • Y10T29/49195Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12556Organic component

Description

  • The invention relates to a lacquer-coated wire with non-circular cross-section, two methods for producing the wire, a coil produced therefrom and a method for the production thereof in accordance with the preambles of the independent claims.
  • From the NL 7903758 For example, a method is known in which wire is wound in one layer onto a core, several turns remaining round, then most of the turns are flat-crimped and wound up, and finally some turns of round wire are wound up again. For multi-layer coils, this method is not suitable, about the attachment of the wire to the core and the structure of the wire nothing is said.
  • From the EP 244 923 A For example, a coil with flat-crimped wire turns is known for large dynamo-electric machines. The coil is formed in suitably shaped channels, the wire seems, similar to conventional transformers to be isolated by paint, on its construction nothing is said.
  • From the US 3,320,788 A is a multilayer coil of crushed wire of unknown construction known as the coil maintains and maintains its stability is not explained.
  • Furthermore, lacquer-coated wires of round cross section for the production of electric coils are known. These wires are made of copper, aluminum or another metal or a metal alloy, and have an inner electrically insulating coating and disposed thereon, an outer baked enamel layer. The first, inner, paint coating, which consists of polyurethane or polyester amide, is used for electrical insulation of the wire. The second, outer, lacquer layer, which is called by the wire manufacturers Backlack, serves a mechanical connection between the turns and the winding layers. It is made of paints that allow a subsequent softening of the paint layer. The softening of the lacquer layer can be done either by the action of heat or by the action of a chemical solvent. Usually, paints based on polyvinyl butyral or polyamide are used.
  • From the JP 1 084517 and the JP 54 109188 So-called flat wires are known in which a plurality of insulated, individually manufactured, round conductors are arranged parallel to each other and interconnected. Then, this conventional flat cable is deformed under pressure and heating so that the conductors receive longitudinal rectangular cross-section. Such flat cables are used with reduced thickness in electronic devices and lately in wiring harnesses of motor vehicles.
  • As "round" in the description and the claims always "circular" understood, as "out of round" thus as "deviating from the circular cross-section". Essentially, the non-circular cross-sections relate to oval and rectangular cross-sections, the latter having rounded edges, thus having the initially defined cross-sections, which have two axes of different length and of normal length.
  • Such wires are used for the production of electric, self-supporting coils. However, these coils with a round cross-section wire have the disadvantage that between the adjacent wires remain free spaces. These gaps cause a reduced packing density, which reduces the efficiency of the device in which the coil is used. In addition, the individual wires of such coils are only on narrow lines of contact, which also, since such coils are subjected to the electromechanical forces, the durability of such coils is impaired.
  • In an effort to produce more densely packed coils, it is also known to make the coils from lacquer coated wires of rectangular cross section. Such wires are obtained by appropriately deforming the metallic core and then providing it with the insulating layers.
  • However, the disadvantage of these coated wires with a metallic core of rectangular cross-section is that, due to the manufacturing process, the coatings are not applied in uniform thickness (thickness) on the metal core. The reason for this is the lack of symmetry of the square metal wire in connection with the surface tension of the material of the coatings. For this reason, such wires have coatings with convex outer surfaces. Now, when such wires are processed into coils, adjoining wires touch only along relatively narrow lines of contact, as with the coils made from wires of round cross-section, spaces between the individual wires remain. Since the lacquer coating and thus also the outer baked enamel layer are applied to the wire in different thicknesses distributed over the rectangular areas, and the wires cake together only in relatively narrow contact areas, the package cohesion of the individual wires in the coil is not optimal. As a result, the service life and the mechanical self-carrying capacity of the coil are in turn severely impaired.
  • The object of the invention is now to provide a non-round lacquer-coated wire, which does not have the disadvantages of these wires mentioned.
  • This object is achieved by the characterizing features of the independent claims; Subclaims indicate advantageous embodiments. As a cross-sectional axis attributable side of the areas of the surface are referred to, which can be considered to be most likely to extend parallel to a cross-sectional axis extending.
  • In an advantageous embodiment of the invention, the wire has a cross section with an axial ratio of not more than 3: 1, wherein it is rectangular or advantageously oval cross-section.
  • The advantage of such a wire according to the invention is that its design enables the production of an electrical coil in which the adjacent wires are close together and caked together over a large area. Due to the fact that the layer thickness of the paint coating of the wire at the shorter cross-sectional axis to be assigned sides stronger, preferably much stronger, than at the longer cross-sectional axis attributable sides, it is in the production of coils of lacquer-coated wires in particular oval cross-section possible at to largely fill the array of wires adjacent gussets with varnish coating material. Namely, the coil production is carried out under heating so that paint coating material becomes plastic and so the gusset spaces forming in particular in the area of the shorter transverse axis of the wire can be filled by the paint coating compound present here to an increased extent. Due to the substantially uniform layer thickness of the lacquer coating on all sides or surfaces of the wire according to the invention, a close arrangement and caking of the lacquer-coated wires of rectangular cross section in the production of coils is ensured in any case.
  • Due to the elimination of gaps between adjacent wires and the all-round firm caking of the wires, the stability of the electrical coil and thus their life compared to the previously produced known coils with a square wire cross-section by up to 50%, thus significantly increased.
  • The invention also relates to a method for producing a wire having a non-circular cross-section, which has two axes of different lengths, normal to each other and from a metal wire and a surrounding paint coating having insulating and baked paint properties. This method is according to the invention characterized in that the paint-coated wire round cross-section by rolling on a cross section with a maximum axial ratio of 3: 1 is pressed .. According to a preferred embodiment, the wire is pressed to an oval cross-section.
  • Surprisingly, it has been found that squeezing the coated wire to this maximum extent is possible without adversely affecting the paint coating and providing a substantially uniform coverage on the individual faces of the wire.
  • The process according to the invention is preferably carried out in such a way that the paint-coated wire of round cross-section is carried out between two correspondingly spaced rolls. It is just essential that the nip is adjusted so that the ratio of the two different lengths, perpendicular to each other cross-sectional axes 3: 1 of the deformed wire is not exceeded.
  • In the drawing, the subject matter of the invention is explained in more detail, in which for the sake of clarity, a substantially significantly increased scale the
    • Fig. 1 a conventionally coated wire of round cross section,
    • Fig. 2 one made of a wire according to Fig. 1 manufactured electric coil,
    • Fig. 3 a known lacquer-coated wire of rectangular cross-section,
    • Fig. 4 one out of the wire according to Fig. 3 manufactured electric coil,
    • Fig. 5 a wire of oval cross section according to the invention,
    • Fig. 6 one out of the wire according to Fig. 5 manufactured electric coil,
    • Fig. 7 an electrical coil according to the invention in plan view,
    • Fig. 8 a section along the line VIII-VIII of Fig. 7 .
    • Fig. 9 a section along the line IX-IX of Fig. 7 and
    • Fig. 10 a section along the line XX the Fig. 7 demonstrate.
  • The invention will be explained in more detail, for example, with the aid of lacquer-coated wires whose lacquer coating is in each case constructed from an inner electrically insulating insulating layer and an outer baked enamel layer. Instead of the two-layer paint coating on the metal wire, a single-coat paint coating can also be used, which simultaneously has insulation and baked-on properties.
  • Fig. 1 shows a conventional lacquer-coated wire 1 'round cross section, wherein the metal wire 2' with an inner electrically insulating lacquer layer 3 'is sheathed. Over this lacquer layer 3 ', an outer, second baked enamel layer 4' is arranged, which serves a connection between the wires of electrical coils made of these. Such a coil 5 'is in Fig. 2 shown. The contacting paint-coated wires 1 'are on along relatively narrow lines of contact with each other via the baked enamel layer connected. However, between the wires 1 'remain free spaces 6', which bring a reduced packing density with it.
  • Fig. 3 shows a lacquer-coated wire 1 "of rectangular cross section according to previously known prior art Such coated wires are conventionally made so that a metal wire of round cross-section is pressed or pressed and formed into a wire 2" of rectangular cross-section. An electrically insulating lacquer coating 3 "and then a baked enamel coating 4" are then applied to the deformed metal wire 2 "due to the lack of symmetry of the cross-sectionally substantially rectangular wire 2", these wires have coatings of non-uniform thickness as a result of the production in particular on their broad sides, coatings 3 ", 4" sometimes irregularly outwardly cambered outer surfaces.
  • This results in the processing of such type conventionally produced wires to electric coils 5 "between the turns or layers of turns again free spaces 6", which cause a reduced packing density and stability of the electric coil.
  • In Fig. 5 a wire 1 of oval cross-section produced according to the invention is shown, which consists of a metal wire 2, an electrically insulating coating 3 surrounding it and an outer baked enamel layer 4 applied thereto. By a continuous gentle pressing of a lacquer-coated wire round cross-section, which can be produced according to the given symmetry with lacquer coatings in uniform thickness, to an oval cross-section with a ratio of two different lengths, vertically stacked Querschnittsachscn of a maximum of 3: 1 finally shows the depressed coated Wire 1 on all sides in each case coatings in steplessly uniformly extending thickness. The surface of the coating is substantially smooth. The electrically insulating coating 3 and the outer baked enamel layer 4 each have an average thickness of between 5 and 10 μm.
  • From such coated inventively produced wires 1 oval cross-section constructed electric coils 5, as they are eg in Fig. 6 are shown, have an extremely high packing density, since the coated wires 1 with their outer baking layers 4 without or at least to a large extent without formation of free spaces cake together and connected to each other. This results also a very high stability and thus life of self-supporting coils. 5
  • The invention makes it possible to eliminate a disadvantage of the wires of non-circular cross-section in the use of electric coils. Such wires tend to break at the points where they exit the coil assembly. They are much more vulnerable in this respect than round wires. The reason for this vulnerability presumably lies in the increased punctual dynamic stresses in this area, to which non-circular wires oppose less resistance than round ones, but the causes are not explored in the last consequence.
  • As in the Fig. 7 to 10 shown, it is possible by the inventive method to produce the coils of a wire 1 ', which in the area in which it is guided by the (not shown) connection point freely to the coil (section XX, Fig. 10 ), the loop 7, and in an initial region 8 on the spool 9, which does not exceed one turn and is preferably less than half a turn, to leave round and to produce only the actual spool of the inventively formed wire 1. In the illustrated embodiment, the transition from the round wire 1 'to the non-round wire 1 in the area between the sectional planes VIII-VIII and IX-IX, as shown in the 8 and 9 is apparent.
  • This is possible because the wire is round until the coil is wound and is deformed only during the supply for winding. In the case of the non-circular wires according to the prior art, it would be completely hopeless to design the core correspondingly unevenly over the wire length and then to search for and use the respectively suitable places. Only by this embodiment of the invention, it is possible to make coils together with their electrical leads in one piece, but with over the length of the wire of different cross-section, and thus to provide the most suitable for each site cross-sectional shape.
  • In practice, this is done so that in the automatic coil production, the round end of the wire is gripped by the manipulator is guided with the intended excess length to the winding point, and that during this feed movement, the forming rollers are delivered so that a part of the first turn of the coil 9 from round wire 1 ', while the remaining and the other turns of non-round wire 1 exist. On analog The form rollers are separated when the spot of the wire comes to you, from where on the finished coil round wire should be available again.
  • Thus, the invention relates both to a coil of a wire according to the invention, which is characterized in that the coil consists essentially of wire non-circular cross-section and that at least one of the feed wires (loop) to the coil has round cross-section and over a maximum of one turn, preferably maximum half a turn, with a round cross-section is part of the coil; as well as a method for producing such a coil, characterized in that between a supply reel for the round wire and the guide device for the supply of the wire to the casserole point on the spool are arranged forming rollers for deforming the wire which, between an active position, in which they displace the continuous wire and an inactive position in which the wire passes through and remains round, are adjustable, and that the forming rollers are in the active position when passing through sections of the wire, from which the coil is formed and that in be brought to the inactive position when passing through wire sections, from which a loop or the transition from the coil to the loop is formed.

Claims (7)

  1. Individual lacer-coated wire having a noncircular cross-section with two axes which extend perpendicularly to each other and have different length, consisting of a metal wire (2) and a lacquer-coating (3, 4) encasing it, consisting, where applicable, of a plurality of layers, for manufacturing electrical coils (5), characterised in that, the cross-section of the wire is oval, the lacquer coating (3, 4) has isolation properties and properties of a baked lacquer layer and in that, the lacquer coating has on sides to be assigned to the longer cross-sectional axis a smaller thickness than on the sides to be assigned to the shorter cross-sectional axis.
  2. Wire according to claim 1, characterised in that, the ratio of the long cross-sectional axis to the short cross-sectional axis of the wire (2) is at most 3:1.
  3. Wire according to claim 1 or 2, characterised in that, it has, at least at one of its ends, a section with circular cross-section.
  4. Method of manufacturing a wire according to one of the claims 1 or 2, characterised in that, a lacquer coated wire (1') with round cross section becomes, by using a rolling process, pressed into a cross section having a ratio of the long cross-sectional axis to the short cross-sectional axis of at most 3:1.
  5. Method of manufacturing a wire according to claim 3, characterised in that, a lacquer coated wire with round cross-section is pressed by a rolling process along the sections which are not round to a cross section having a ratio of the long cross-sectional axis to the short cross-sectional axis of at most 3:1 and is not pressed along the round sections.
  6. Coil comprised of a wire according to claim 3 wherein the coil body is composed essentially of wire having a noncircular cross-section and the wire, at the end of the coils, forms supply wires, wherein at least one of the supply wires of the coil has a round cross-section, characterised in that, not more than one winding, preferred not more than half a winding of the wire having a round cross-section.
  7. Method of manufacturing a coil according to claim 6, comprising to transport wire with a round cross-section from a supply reel to a guide device for supplying the wire to a contact point on the coil, characterised in that, between the supply reel for the round wire and the guide device shaping rolls for deforming the wire are provided, which may either be in an active position in which the rolls press and deform the wire travelling through a roll gap and an inactive position in which the wire travels through the roll gap and remains round, wherein the shaping rolls are in the active position when sections of the wire travel through the roll gap which form the coil body and the shaping rolls are moved in the inactive position when sections of the wire travel through the roll gap which form a loop or form a transition from the coil to the loop.
EP02450180.1A 2001-09-19 2002-08-27 Varnish-coated wire Expired - Fee Related EP1296336B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT20011492 2001-09-19
AT0149201A AT412682B (en) 2001-09-19 2001-09-19 Paint-coated wire

Publications (2)

Publication Number Publication Date
EP1296336A1 EP1296336A1 (en) 2003-03-26
EP1296336B1 true EP1296336B1 (en) 2013-04-10

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Application Number Title Priority Date Filing Date
EP02450180.1A Expired - Fee Related EP1296336B1 (en) 2001-09-19 2002-08-27 Varnish-coated wire

Country Status (6)

Country Link
US (1) US6789311B2 (en)
EP (1) EP1296336B1 (en)
JP (1) JP4271919B2 (en)
KR (1) KR100919937B1 (en)
CN (1) CN1240080C (en)
AT (1) AT412682B (en)

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JP5814291B2 (en) * 2013-04-11 2015-11-17 トヨタ自動車株式会社 Manufacturing method of assembly of strands
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JPS54109188A (en) * 1978-02-16 1979-08-27 Sumitomo Electric Ind Ltd Method of fabricating self-fusing flat type insulated wire
NL7903758A (en) * 1979-05-14 1980-11-18 Philips Nv Electromagnetic device and method for wrapping a spool for that device.
EP0244923A2 (en) * 1986-05-08 1987-11-11 Century Electric, Inc. Method of winding a field coil with flattened round wire and field coil produced by said method
JPS6484517A (en) * 1987-09-25 1989-03-29 Furukawa Electric Co Ltd Manufacture of tape-form flat type insulating wire

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JP4271919B2 (en) 2009-06-03
KR100919937B1 (en) 2009-10-05
ATA14922001A (en) 2004-10-15
CN1240080C (en) 2006-02-01
JP2003178629A (en) 2003-06-27
CN1417810A (en) 2003-05-14
KR20030025183A (en) 2003-03-28
EP1296336A1 (en) 2003-03-26
US20030054192A1 (en) 2003-03-20
US6789311B2 (en) 2004-09-14

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