US20050236923A1 - Band coil - Google Patents
Band coil Download PDFInfo
- Publication number
- US20050236923A1 US20050236923A1 US11/172,105 US17210505A US2005236923A1 US 20050236923 A1 US20050236923 A1 US 20050236923A1 US 17210505 A US17210505 A US 17210505A US 2005236923 A1 US2005236923 A1 US 2005236923A1
- Authority
- US
- United States
- Prior art keywords
- coil
- band
- coils
- winding sides
- sides
- 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.)
- Abandoned
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0435—Wound windings
- H02K15/0442—Loop windings
- H02K15/045—Form wound coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus 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
- H01F41/02—Apparatus 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
- H01F41/04—Apparatus 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
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- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/4906—Providing winding
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/4906—Providing winding
- Y10T29/49066—Preformed winding
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Windings For Motors And Generators (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention relates to a method of manufacturing a band coil by means of a material-removing process performed on the coils so as to obtain a band coil which has a profile in the direction of the coil axis. Such a process may be a discharge process, an etching process or a mechanical grinding process. The obtained band coils may have such a shape that certain coil sides are effective whereas other coil sides are interfering as little as possible. Such band coils can be very successful in planar motors.
Description
- The invention relates to a method of manufacturing a coil formed by a coiled, band-shaped, current-conducting foil, which coil has a coil axis.
- The invention also relates to a coil, an assembly of such coils, as well as to a translatory or rotary motor in which such coils or coil assemblies are used.
- The method of manufacturing a band coil as mentioned above is known from U.S. Pat. No. 4,819,322. A metal foil insulated at two sides is wound on a mandrel in this method. The mandrel is removed and the wound foil is cut into a number of slices in a direction perpendicular to the longitudinal direction of the wound foil by means of an electric spark erosion process. The slices thus formed are the band coils. Depending on the cross-sectional dimensions of the mandrel, band coils obtained in this manner may have various shapes. An example of such a band coil 1 is depicted in
FIG. 8 . Thecoil axis 2 of a band coil is the axis which is perpendicular to the plane of the turns 3 and is situated in the center of the turns, i.e. in fact the axis around which the foil was wound. In an X-Y-Z system of coordinates, therefore, the turns lie in the X-Y plane, and the coil axis extends in the Z-direction. The advantage of band coils over known wire-wound coils, which are used in the great majority of cases, is the greater filling factor of the conductor (usually copper), whereby a much higher effectivity is achieved, but most of all whereby dissipated energy in the form of heat can be removed much more effectively than in wire coils, because the heat flux goes through transitions of air and insulation with bad heat conduction in the case of wire-wound coils, whereas the heat flux in band coils goes mainly through copper with a much better heat conduction. The cost of manufacture of band coils, however, is much higher than that of wire coils. A disadvantage of the band coils known until now, however, is their planar shape, i.e. the height of the band coil is constant. An example of an application of a planar band coil is described in U.S. Pat. No. 5,866,965, where a number of band coils are provided around the stator poles of the stator of a rotary motor. The application of the band coil is limited thereto. Coils usually have effective and ineffective winding sides. The effective winding sides, also referred to as coil sides, supply the desired force. The ineffective winding sides usually have an interfering influence on the operation of the coil. The ineffective winding sides are bent away from the plane in which the effective winding sides are situated in the case of wire-wound coils, or the coil is wound such that certain winding sides have as small as possible a disturbing influence. This is not possible in the case of band coils. - The invention has for its object to obtain a band coil in a three-dimensional shape, such that a wide range of applications is achieved.
- The method according to the invention is for this purpose characterized in that the coil is given a profile in a direction parallel to the coil axis of the coil by means of a bulk-removing operation performed on the coil turns. Coils can be obtained by this method which are suitable for many applications, such as in motors, but also, for example, as deflection coils in TV sets.
- The bulk-removing treatment may be a spark erosion process, for example a wire sparking process, or an etching process, or an electrochemical process, or a machining process such as a grinding or milling process.
- The invention also relates to a coil formed by a wound band-shaped, current-conducting foil with a coil axis. Such a band coil is also known from U.S. Pat. No. 5,866,965. As was noted above, such band coils have a limited range of applications owing to their planar shape. All winding sides lie in the same plane, so that usually two mutually opposed winding sides, or at least portions of these winding sides, adversely affect the operation of the coil. To increase the range of applications, the coil according to the invention is characterized in that at least a portion of the winding sides is staggered with respect to the remaining portion of the winding sides in a direction parallel to the coil axis of the coil. Ineffective portions of the winding sides as a result lie in a different plane from the effective winding sides. Preferably, the coil has two pairs of mutually opposed winding sides, the one pair of mutually opposed winding sides being staggered relative to the other pair of mutually opposed winding sides in a direction parallel to the coil axis of the coil. As a result, the two pairs of mutually opposed winding sides lie in different planes, so that it is simple to position the coil in the respective application such that only one of the two pairs of mutually opposed winding sides is effective, and the other pair of winding sides has as little adverse effect as possible. Such a coil may be manufactured by the method according to the invention as described above.
- The invention also relates to an assembly of at least two coils, wherein between a pair of mutually opposed winding sides of one of the coils according to the invention at least one winding side of another coil is situated. The other coil may be a coil according to the invention, but this need not necessarily be the case.
- The invention furthermore relates to a translatory or rotary motor with two parts which are movable relative to one another, the one part comprising a system of magnets and the other part at least one coil or an assembly of at least two coils according to the invention, while one pair of mutually opposed winding sides of a coil lie closer to said one part than does the other pair of mutually opposed winding sides.
- The invention will now be explained in more detail with reference to a few embodiments.
-
FIG. 1 diagrammatically shows a method by which a profile is provided in a band coil as shown inFIG. 8 , -
FIG. 2 shows the profiled band coil obtained by the method in perspective view, -
FIG. 3 shows an assembly of two band coils as shown inFIG. 2 , -
FIG. 4 shows an assembly of three band coils as shown inFIG. 2 , -
FIG. 5 shows an assembly of band coils in which profiled band coils according to a second embodiment are used, -
FIG. 6 diagrammatically and in perspective view shows a planar motor with an assembly of band coils as shown inFIG. 4 , -
FIG. 7 diagrammatically shows a rotary motor in which a profiled band coil according to the invention is used, and -
FIG. 8 shows a band coil according to the prior art. -
FIG. 1 diagrammatically shows how, starting from a band coil 1 as depicted inFIG. 8 and obtained, for example, by the method described in U.S. Pat. No. 4,819,322, a profile is provided in the winding sides. The hatched portions are removed from the band coil by means of milling tools, for examplediamond milling tools 4. If necessary, the resulting milling surfaces may be given an after-treatment for preventing the bands or turns of the band coil from making contact with one another. Such a profile may alternatively be obtained through other processes such as a spark erosion process, an etching process, or an electrochemical process. It will be obvious that practically all desired profiles may be obtained.FIG. 2 shows an example of a profiledband coil 10. Seen from the upper side, theheight 14 of almost the entire long windingsides 13 a has been halved with respect to theoriginal height 15 of the winding sides before the treatment. Theheight 16 of the short windingsides 13 b is also halved, but from the lower side in this case. The cross-sectional dimension of the band-shaped turns has remained approximately constant in this manner. -
FIG. 3 shows how two such profiled band coils ofFIG. 2 may be joined together into anassembly 100. Theband coil 10 is identical to the band coil shown inFIG. 2 , i.e. the short windingsides 13 b lie one band level h higher than the long windingsides 13 a. The short windingsides 23 b of theband coil 20 lie twoband levels 2 h higher than the long windingsides 23 a. The two band coils may be laid one on the other such that one of the long winding sides of the one band coil comes to lie exactly between the two long other winding sides of the other band coil. The distance a between two long winding sides of one band coil is accordingly nominally equal to the width b of the foil package of one winding side. As a result, all long winding sides lie in one plane and against one another in the assembly. The short winding sides will lie in stages one above the other, all lying above the upper side of the long winding sides. - The embodiment of
FIG. 4 is comparable to that ofFIG. 3 , but here three band coils have been stacked so as to form anassembly 200. The short windingsides 13 b of theband coil 10 lie one band level h higher than the long windingsides 13 a, the short windingsides 23 b of theband coil 20 lie twoband levels 2 h higher than the long windingsides 23 a, and the short windingsides 33 b of theband coil 30 lie threeband levels 3 h higher than the long windingsides 33 a. The distance c between the long winding sides of each band coil now is nominally equal to twice the width b of the foil package of a winding side. In the assembly, all long windingsides sides sides FIG. 6 . -
FIG. 5 shows an alternative embodiment of an assembly of profiled band coils. The shape of the three identical band coils 50 is comparable to that of the band coils 10 ofFIG. 2 . The two identical band coils 1 are planar band coils as shown inFIG. 8 . The two outermost band coils 60, 61 are somewhat different in shape. In these band coils, one of the long winding sides 63 a 1 lies higher than the other long winding side 63 a 2. In theassembly 30, theband coil 60 is mirrored symmetrically in its position with respect to theband coil 61. The distance c between the long winding sides of each band coil is twice the width b of the foil package of a long winding side again, so that two winding sides, each of a different band coil, will lie between the long winding sides of a band coil each time in the assembly, with the exception of the long winding sides 63 a 1 of the outermost band coils. These winding sides lie above the upper side of all other long winding sides, as do a number of short winding sides. In this manner, therefore, twelve long winding sides lie next to one another in one and the same plane in this assembly. -
FIG. 6 diagrammatically shows the principle of a planar motor. In such a motor, twoparts part 400, usually a stationary part, comprising a system ofmagnets 410 of alternating N and S poles, and the other,movable part 500 comprising a system of coils 510. Such a planar motor is known from WO . . . (being the PCT patent application EP 00/07970=PHN17.621, which is to be replaced in due time by the publication no. WO . . . of the PCT application). The system of coils for this planar motor is formed by fourcoil block units coil blocks 512 situated next to one another. Each coil block has six current conductors which are present in the magnetic field of the system of magnets. The current conductors accordingly are the long, effective winding sides or coil sides of the coils. The current conductors of thecoil block units coil block units movable part 400 can move in a controlled manner in the X-Y-plane immediately above thestationary part 500 comprising the system of magnets through commutation of the current. Lorenz forces exerted on thecoil block units coil block units assembly 200 of coils as depicted inFIG. 4 . The long winding sides of the coils lie immediately above the surface of the magnets of the system of magnets. The Lorenz forces arising here are the forces which render it possible to obtain a controlled movement. Lorenz forces also arise at the short winding sides. These forces have a disturbing effect on the desired movement. To reduce this disturbing effect, the Lorenz forces at these short winding sides must be as small as possible. This is achieved in that the short winding sides are brought to a greater distance from the surface of the system of magnets, and thus farther away from the influence of the magnetic field. This is possible with the coils in accordance with the present invention. Obviously, it would also be possible in the case of the known wire-wound coils to bend away said short winding sides from the influence of the magnetic field. As was noted above, however, these wire coils are much less effective, i.e. the force supplied by a wire coil is much smaller than the force supplied by a band coil. This is caused on the one hand by the higher filling factor of copper of band coils compared with wire coils, and on the other hand by a much greater current density being practicable in band coils as a result of a much more efficient heat removal. The assembly of band coils shown inFIG. 5 might also be used in the planar motor ofFIG. 6 . Such an assembly then forms one coil block unit 511(a, b, c, or d). - Finally,
FIG. 7 shows an example of a band coil according to the invention used in a rotary motor. Thestator 70 is formed by ahollow cylinder 71. The inner surface of the cylinder is provided with a number ofstator poles 72 which extend in longitudinal direction of the cylinder. Thestator poles 72 have a bent shape, in fact they form part of a cylinder. The stator is made of a magnetizable material, such as iron. The band coils 73 have a bent shape, i.e. the shapes of two mutually opposed windingsides 74 b are adapted to the shape of thestator poles 72. The other windingsides 74 a are straight or faintly curved over the width of this winding side. Therotor 75 is provided withrotor poles 76. The rotor is also made of a magnetizable material, such as iron. Further details on the operation of such a rotary motor are given in U.S. Pat. No. 5,866,965. It is obviously also possible to use one or several assemblies of band coils similar to those shown in FIGS. 3 to 5, but with curved winding sides, in a rotary motor in such a manner. - Since band coils according to the invention may be given any three-dimensional shape, their application in very complicated motors, which have to enable both rotary and linear movements, is possible.
- Band coils according to the invention may also be successfully used for the deflection of electron beams in TV sets. The band coil may be brought into a shape in which all coil sides are effective.
Claims (9)
1. A method of manufacturing a coil formed by a wound band-shaped, current-conducting foil, which coil has a coil axis, characterized in that the coil is given a profile in a direction parallel to the coil axis of the coil by means of a bulk-removing operation performed on the coil turns of the coil.
2. A method as claimed in claim 1 , characterized in that the bulk-removing process is a spark erosion process.
3. A method as claimed in claim 1 , characterized in that the bulk-removing process is an etching process.
4. A method as claimed in claim 1 , characterized in that the bulk-removing process is an electrochemical process.
5. A method as claimed in claim 1 , characterized in that the bulk-removing process is a mechanical machining process.
6. A coil formed by a wound band-shaped, current-conducting foil having winding sides and a coil axis, characterized in that at least a portion of the winding sides is staggered with respect to the remaining portion of the winding sides in a direction parallel to the coil axis of the coil.
7. A coil as claimed in claim 6 , characterized in that the coil has two pairs of mutually opposed winding sides, the one pair of mutually opposed winding sides being staggered relative to the other pair of mutually opposed winding sides in a direction parallel to the coil axis of the coil.
8. An assembly of at least two coils, wherein between a pair of mutually opposed winding sides of one of the coils as claimed in claim 7 at least one winding side of another coil is situated.
9. A translatory or rotary motor with two parts which are movable relative to one another, the one part comprising a system of magnets and the other part at least one coil or an assembly of at least two coils as claimed in any one of the claims 6 to 8 , while one pair of mutually opposed winding sides of a coil lie closer to said one part than does the other pair of mutually opposed winding sides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/172,105 US20050236923A1 (en) | 2000-12-11 | 2005-06-30 | Band coil |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00204428.7 | 2000-12-11 | ||
EP00204428 | 2000-12-11 | ||
US10/011,895 US6926588B2 (en) | 2000-12-11 | 2001-12-06 | Band coil |
US11/172,105 US20050236923A1 (en) | 2000-12-11 | 2005-06-30 | Band coil |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/011,895 Continuation US6926588B2 (en) | 2000-12-11 | 2001-12-06 | Band coil |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050236923A1 true US20050236923A1 (en) | 2005-10-27 |
Family
ID=8172406
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/011,895 Expired - Fee Related US6926588B2 (en) | 2000-12-11 | 2001-12-06 | Band coil |
US11/172,105 Abandoned US20050236923A1 (en) | 2000-12-11 | 2005-06-30 | Band coil |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/011,895 Expired - Fee Related US6926588B2 (en) | 2000-12-11 | 2001-12-06 | Band coil |
Country Status (7)
Country | Link |
---|---|
US (2) | US6926588B2 (en) |
EP (1) | EP1346381B1 (en) |
JP (1) | JP2004516649A (en) |
KR (1) | KR20020074515A (en) |
DE (1) | DE60138221D1 (en) |
TW (1) | TW559839B (en) |
WO (1) | WO2002049050A1 (en) |
Cited By (2)
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WO2012128646A1 (en) * | 2011-03-24 | 2012-09-27 | Greenway Energy As | Coil assembly for three phased transverse axial flux multi disk machines |
DE102016213137A1 (en) * | 2016-07-19 | 2018-01-25 | Robert Bosch Gmbh | Stator for an electric motor and method for manufacturing such a stator |
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JP2002289444A (en) * | 2001-03-23 | 2002-10-04 | Fdk Corp | High frequency power inductance element |
US6768239B1 (en) | 2003-06-23 | 2004-07-27 | Magnetic Power-Motion, Llc | Electromotive devices using notched ribbon windings |
FR2896350B1 (en) * | 2006-01-16 | 2008-02-29 | Valeo Equip Electr Moteur | METHOD FOR REALIZING THE WINDING OF A STATOR OF ROTATING ELECTRIC MACHINE, AND STATOR OBTAINED THEREBY |
US7619345B2 (en) * | 2006-01-30 | 2009-11-17 | American Superconductor Corporation | Stator coil assembly |
WO2009060038A2 (en) * | 2007-11-07 | 2009-05-14 | Frank Pommerening | Electric motor or generator of the disc type |
FI20096333A0 (en) * | 2009-12-15 | 2009-12-15 | Abb Oy | METHOD FOR MANUFACTURE OF ELECTRICAL MACHINE COILING |
EP2383868B1 (en) * | 2010-04-28 | 2017-04-19 | Siemens Aktiengesellschaft | Winding arrangement |
US8395295B2 (en) * | 2010-10-08 | 2013-03-12 | The Boeing Company | Laminated sheet winding |
JP2012157183A (en) * | 2011-01-27 | 2012-08-16 | Chokutoku Kagi Kofun Yugenkoshi | Unit coil, coil assembly, and coil-less type linear motor |
US9985488B2 (en) | 2011-07-22 | 2018-05-29 | RWXT Nuclear Operations Group, Inc. | Environmentally robust electromagnets and electric motors employing same for use in nuclear reactors |
US20130093280A1 (en) * | 2011-10-17 | 2013-04-18 | GM Global Technology Operations LLC | Multi-filar bar conductors for electric machines |
US8866361B2 (en) * | 2011-10-17 | 2014-10-21 | GM Global Technology Operations LLC | Bar conductor shapes for electric machines |
KR101468312B1 (en) * | 2013-06-19 | 2014-12-02 | 창원대학교 산학협력단 | Superconductor coil and Induction heating machine thereof |
KR101880256B1 (en) | 2015-04-24 | 2018-07-20 | 현대일렉트릭앤에너지시스템(주) | Coil unit of salient pole type rotor |
KR101769717B1 (en) * | 2016-09-19 | 2017-08-21 | 한양대학교 산학협력단 | Slotless motor and coil structure of the same |
EP3605797A1 (en) * | 2018-08-01 | 2020-02-05 | Siemens Aktiengesellschaft | Cogged coil for a stator of an electrically rotating machine |
WO2020094470A1 (en) * | 2018-11-05 | 2020-05-14 | Siemens Gamesa Renewable Energy A/S | Electrical machine and method for fabrication of a coil of an electrical machine |
TWI779315B (en) * | 2020-07-13 | 2022-10-01 | 東佑達自動化科技股份有限公司 | Ironless linear motor and its coil device |
GB2617146B (en) * | 2022-03-30 | 2024-04-24 | Yasa Ltd | Rotor for an axial flux machine |
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US6791224B1 (en) * | 1999-07-26 | 2004-09-14 | Honda Giken Kogyo Kabushiki Kaisha | Stator winding and manufacturing method therefor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD120736A1 (en) | 1975-06-23 | 1976-06-20 |
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2001
- 2001-11-21 WO PCT/EP2001/013630 patent/WO2002049050A1/en active Application Filing
- 2001-11-21 EP EP01270896A patent/EP1346381B1/en not_active Expired - Lifetime
- 2001-11-21 DE DE60138221T patent/DE60138221D1/en not_active Expired - Fee Related
- 2001-11-21 KR KR1020027010275A patent/KR20020074515A/en not_active Application Discontinuation
- 2001-11-21 JP JP2002550269A patent/JP2004516649A/en active Pending
- 2001-12-06 US US10/011,895 patent/US6926588B2/en not_active Expired - Fee Related
- 2001-12-20 TW TW090131704A patent/TW559839B/en not_active IP Right Cessation
-
2005
- 2005-06-30 US US11/172,105 patent/US20050236923A1/en not_active Abandoned
Patent Citations (20)
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012128646A1 (en) * | 2011-03-24 | 2012-09-27 | Greenway Energy As | Coil assembly for three phased transverse axial flux multi disk machines |
CN103493344A (en) * | 2011-03-24 | 2014-01-01 | 格灵威能源公司 | Coil assembly for three phased transverse axial flux multi disk machines |
DE102016213137A1 (en) * | 2016-07-19 | 2018-01-25 | Robert Bosch Gmbh | Stator for an electric motor and method for manufacturing such a stator |
Also Published As
Publication number | Publication date |
---|---|
WO2002049050A1 (en) | 2002-06-20 |
EP1346381B1 (en) | 2009-04-01 |
DE60138221D1 (en) | 2009-05-14 |
KR20020074515A (en) | 2002-09-30 |
US20020079775A1 (en) | 2002-06-27 |
US6926588B2 (en) | 2005-08-09 |
JP2004516649A (en) | 2004-06-03 |
TW559839B (en) | 2003-11-01 |
EP1346381A1 (en) | 2003-09-24 |
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