GB2302455A - A rotor - Google Patents

A rotor Download PDF

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Publication number
GB2302455A
GB2302455A GB9512395A GB9512395A GB2302455A GB 2302455 A GB2302455 A GB 2302455A GB 9512395 A GB9512395 A GB 9512395A GB 9512395 A GB9512395 A GB 9512395A GB 2302455 A GB2302455 A GB 2302455A
Authority
GB
United Kingdom
Prior art keywords
rotor
layer
rotor according
manufacturing
magnetic
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.)
Withdrawn
Application number
GB9512395A
Other versions
GB9512395D0 (en
Inventor
Anthony David Richardson
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.)
URENCO
Original Assignee
URENCO
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
Application filed by URENCO filed Critical URENCO
Priority to GB9512395A priority Critical patent/GB2302455A/en
Publication of GB9512395D0 publication Critical patent/GB9512395D0/en
Priority to GBGB9525133.6A priority patent/GB9525133D0/en
Priority to AU62312/96A priority patent/AU6231296A/en
Priority to PCT/GB1996/001433 priority patent/WO1997000549A1/en
Publication of GB2302455A publication Critical patent/GB2302455A/en
Withdrawn legal-status Critical Current

Links

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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/1203—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by manufacturing, e.g. assembling or testing procedures for the damper units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/18—Suppression of vibrations in rotating systems by making use of members moving with the system using electric, magnetic or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/30—Flywheels
    • F16F15/305—Flywheels made of plastics, e.g. fibre reinforced plastics [FRP], i.e. characterised by their special construction from such materials
    • 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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
    • H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/06—Magnetic or electromagnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

A rotor is primarily for high speed applications, such as flywheels. It comprises a fibre-reinforced plastics material (40, 42, 44, 46, 48) incorporating magnetic filler material (16, 18, 20, 22, 24, 26) between layers of less-magnetic plastics material (40, 42, 44, 46, 48). The rotor (2) comprises a plate (4) which is thicker radially, than it is longitudinally,relative to its axis of rotation (7).

Description

A ROTOR Field of the Invention The present invention relates to rotors and particularly, though not exclusively, to rotors for high speed applications, and to methods for their manufacture.
Background to the Invention Published international patent application no.
We94/06193 discloses a fibre reinforced rotor suitable for some high speed applications. The rotor comprises fibre reinforced plastics material incorporating magnetic filler material, the fibre reinforced plastics material being arranged as a multi-layered cylindrical portion of the rotor, the magnetic filler material being disposed within and between the layers. The cylindrical portion disclosed is a hollow tubular portion.
The prior art arrangement is relatively complex and is not suitable for many applications.
It is an aim of preferred embodiments of the present invention to obviate or overcome disadvantages of the prior art, whether referred to herein or otherwise.
Summarv of the Invention According to the present invention in a first aspect there is provided a rotor comprising a fibre reinforced plastics material incorporating magnetic filler material between layers of the less magnetic plastics material, the rotor having an axis of rotation, wherein the rotor comprises a plate which is thicker radially relative to the axis of rotation than it is longitudinally relative to the axis of rotation.
Suitably, the rotor comprises a central spigot around which the plastics and magnetic material layer or layers is or are located.
Suitably, the peripheral outer layer of the rotor comprises epoxy resin or the like plastics material.
Suitably, the magnetic layer or layers is or are end encapsulated in the rotor Suitably, the end encapsulant comprises a fibre reinforced plastics material.
Suitably, the rotor comprises a disc, which may be substantially circular.
Suitably, a body extends from the rotor longitudinally relative to the axis of rotation. The body may be integral with the rotor.
Rotors according to the present invention beneficially allow an efficient electromagnetic interaction between the rotor and a neighbouring stator to be maintained across the radius of the disc.
The invention includes within its scope a flywheel, centrifuge, electric motor, electric generator and/or disc drive comprising a rotor in accordance with the first aspect of the invention.
According to a second aspect of the present invention, there is provided a method of manufacturing a rotor, which method comprises the steps of: (i) providing a mandrel; (ii) winding a first layer comprising resin impregnated fibres onto the mandrel; (iii) winding a second layer comprising magnetic filler material and resin matrix material on to the mandrel; (iv) applying a magnetic field to the rotor to orient the magnetic filler material; (v) curing the resin; and (vi) magnetising the magnetic material.
Normally, but not essentially, step (ii) will be carried out before step (iii).
Suitably, between steps (iii) and (iv) the method includes the step of winding a final layer comprising resin impregnated fibres onto the outside of a second layer.
Suitably, steps (ii) and (iii) of the method are repeated.
Suitably, the mandrel is located between cheek plates in a spaced opposed relationship.
Suitably, the inner layer adjacent the mandrel comprises a resin-impregnated fibre layer. Suitably, the method includes the step of providing an outer peripheral layer comprising resin impregnated fibres.
Preferably, the magnetic field is applied while the resin is in the liquid state, prior to and/or during gelling.
Suitably, the rotor is according to the first aspect of the invention.
Through the use of the winding technique, out of balance in the rotating rotor can be avoided or reduced and high strength can be achieved, enabling high rotational speeds of the rotor to be achieved.
Brief DescriPtion of the Drawings The invention will now be described, by way of example only, with reference to the drawings that follow; in which: Figure 1 is a schematic partly cross-sectional illustration of a rotor according to the present invention mounted on a stator.
Figure 2 is an enlarged schematic cross-sectional illustration of the areas marked X and Y in Figure 1.
DescriPtion of the Preferred embodiment Referring to Figure 1 of the drawings that follow, there is shown a rotor 2 comprising a thin plate in the form of a circular disc 4 of laminated construction attached axially to a central spigot and bearing arrangement 6 having an axis of rotation 7.
The bearing arrangement 6 is mounted in a cooperating portion 8 of a stator 10. In the body of the stator 10 are mounted a plurality of electric coils 12 (only two of which are shown) disposed radially relative to the axis 7 and adjacent the rotor 2. Persons skilled in the art will appreciate that the coils 12 are arranged to drive or interact electromagnetically the rotor 2 and how they will be arranged to do so.
It is noted that the dimensions of the disc 4 are such that it is thicker radially relative to the axis of rotation 7 than it is longitudinally relative to the axis of rotation 7.
Referring to Figure 2 of the drawings that follow, the disc 2 can be seen to comprise inner layer 14 containing fibre reinforcement in an epoxy resin matrix around the central spigot 6. Around the inner layer 14 are wound a plurality of alternate layers comprising a magnetic powder material held in an epoxy resin matrix 16, 18, 20, 22, 24 and 26, surrounded by an epoxy resin matrix end encapsulant 28, 30, 32, 34, 36 and 38 respectively.
Between the layers 16, 18, 20, 22, 24 and 26, are provided layers 40, 42, 44, 46 and 48 respectively containing fibre reinforcement in a resin matrix. It will be appreciated that the pattern of layers is repeated between areas X and Y. These layers 16-48 are wound to the outside diameter of the electric coils 12 in an annular configuration.
Around the circumferential periphery of the disc 4 is wound an additional layer 50 of fibre reinforcement in a resin matrix to contain the inner layers.
The bearing and spigot arrangement 6 may comprise any type of bearing suitable for the application, such as air bearings, magnetic bearings and pin bearings.
Suitable plastics materials would be any of the known fibre reinforced composite matrix materials. For instance, the following may be suitable, optionally with known hardeners, fillers and the like: thermosetting or cold setting or thermoplastic polymeric material such as an epoxy resin or resins, Friedel Crafts resins, polyester resins, polyamides, polyimides, polyether sulphones or polyether ketones.
The resin is typically a thermosetting resin, usually cured by heating. Other resins, including cold setting can be used.
The fibres used can be carbon fibres, glass fibres or Kevlar (polyaramid) plastics or aluminium tape, nylon, boron, polyolefin or any combination thereof. These fibres can be wound as a collection in tows or cold setting or thermoplastic.
The magnetic material can comprise particles, spheroids, whiskers, fibres or the like. Normally it will be a powder material comprising iron, nickel, cobalt or an alloy thereof. A ferrite such as barium ferrite may be included. Alternatives include hard magnetic materials such as those comprising rare-earth elements eg cobaltsamarium or neodymium-iron-boron.
A method of manufacture suitable for producing a rotor 2 as shown will now be described.
A spigot 6 is provided as a central mandrel about which are wound tows between cheek plates to provide annular rings the cross-sectional configuration of which are shown in Figure 2. The inner layer 16 against the spigot 6, comprises fibre reinforcement in a resin matrix to form an inner ring or secondary mandrel to support the subsequent layers. Following the inner layer 16, alternate layers are wound onto the mandrel, a first layer comprising carbon fibres impregnated with uncured epoxy resin, a second layer comprising magnetic material powder in a demagnetised (non-aligned) state and uncured epoxy resin, and following alternate layers. By winding of the two types of layer simultaneously, a spiral arrangement of alternate layers can be achieved.As the layers are wound on the mandrel, encapsulant resin can be provided around the magnetic material powder layers as shown in Figure 2.
A magnetic field is applied in known manner, to align the magnetic powder material prior to setting of the encapsulating resin.
The epoxy resin is cured by heating to its curing temperature.
The magnetic material powder is then permanently magnetised using a suitable electric coil.
A wear resistant outer layer such as chrome can be superimposed on the outer layer if required for the application in which the rotor is to be employed.
Applications of the rotor described above include its use as a flywheel or electric motor/generator. Further, by providing a hollow tubular cylindrical body attached to the rotor, it can be used as a high speed centrifuge.
The composite, high-strength structure of the rotor makes it suitable for very high rotational speed applications, ie above 20,000 rpm (eg, 100,000 rpm), although it is not limited to these speeds. For instance the rotor can be used to form part of a precision disk drive by the provision of a magnetic medium on the disc.
In this case the rotational speed of the disc will determine the rate at which data can be retrieved.
Rotors (with stators) according to the present invention can be provided in a stacked configuration for some applications.
The reader's attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference.
All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings) , or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims (19)

1. A rotor comprising a fibre reinforced plastics material incorporating magnetic filler material between layers of the less magnetic plastics material, the rotor having an axis of rotation, wherein the rotor comprises a plate which is thicker radially relative to the axis of rotation than it is longitudinally relative to the axis of rotation.
2. A rotor according to Claim 1 in which the rotor comprises a disc.
3. A rotor according to Claim 2, in which the disc is substantially circular.
4. A rotor according to any preceding claim, in which the rotor comprises a central spigot around which the plastics and magnetic material layer or layers is or are located.
5. A rotor according to any preceding claim, in which the peripheral outer layer of the rotor comprises a fibre reinforced plastics material.
6. A rotor according to any preceding claim, in which the magnetic layer or layers is or are end encapsulated in the rotor.
7. A rotor according to Claim 6, in which the end encapsulant comprises a fibre reinforced plastics material.
8. A rotor according to any preceding claim, in which a body extends from the rotor longitudinally relative to the axis of rotation.
9. A rotor according to Claim 8, in which the body is integral with the rotor.
10. A method of manufacturing a rotor, which method comprises the steps of: (i) providing a mandrel; (ii) winding a first layer comprising resin impregnated fibres onto the mandrel; (iii) winding a second layer comprising magnetic filler material and resin matrix material on to the mandrel; (iv) applying a magnetic field to the rotor to orient the magnetic filler material; (v) curing the resin; and (vi) magnetising the magnetic material.
11. A method of manufacturing a rotor according to Claim 10, in which between steps (iii) and (iv) the method includes the step of winding a final layer comprising resin impregnated fibres onto the outside of a second layer.
12. A method of manufacturing a rotor according to Claim 10 or Claim 11, in which steps (ii) and (iii) of the method are repeated.
13. A method of manufacturing a rotor according to any one of Claims 10 to 12, in which the mandrel is located between cheek plates in a spaced opposed relationship.
14. A method of manufacturing a rotor according to any one of Claims 10 to 13, in which the inner layer adjacent the mandrel comprises a resin-impregnated fibre layer.
15. A method of manufacturing a rotor according to any one of Claims 10 to 14, in which the method includes the step of providing an outer peripheral layer comprising resin impregnated fibres.
16. A method of manufacturing a rotor according to any one of Claims 10 to 15, in which the magnetic field is applied while the resin is in the liquid state, prior to and/or during gelling.
17. A method of manufacturing a rotor according to any one of Claims 10 to 16, in which the rotor is according to any one of Claims 1 to 9.
18. A rotor substantially as described herein, with reference to and as shown in the accompanying drawings.
19. A method of manufacturing a rotor, which method is substantially as described herein.
GB9512395A 1995-06-17 1995-06-17 A rotor Withdrawn GB2302455A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9512395A GB2302455A (en) 1995-06-17 1995-06-17 A rotor
GBGB9525133.6A GB9525133D0 (en) 1995-06-17 1995-12-08 A rotor
AU62312/96A AU6231296A (en) 1995-06-17 1996-06-13 A rotor
PCT/GB1996/001433 WO1997000549A1 (en) 1995-06-17 1996-06-13 A rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9512395A GB2302455A (en) 1995-06-17 1995-06-17 A rotor

Publications (2)

Publication Number Publication Date
GB9512395D0 GB9512395D0 (en) 1995-08-16
GB2302455A true GB2302455A (en) 1997-01-15

Family

ID=10776274

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9512395A Withdrawn GB2302455A (en) 1995-06-17 1995-06-17 A rotor
GBGB9525133.6A Pending GB9525133D0 (en) 1995-06-17 1995-12-08 A rotor

Family Applications After (1)

Application Number Title Priority Date Filing Date
GBGB9525133.6A Pending GB9525133D0 (en) 1995-06-17 1995-12-08 A rotor

Country Status (1)

Country Link
GB (2) GB2302455A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854558A2 (en) * 1997-01-21 1998-07-22 Isuzu Ceramics Research Institute Co., Ltd. Structure of a rotor for generators and method of manufacturing the same rotor
EP1111756A2 (en) * 1999-12-14 2001-06-27 Volkswagen Aktiengesellschaft Electric machine
DE102008050801A1 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor shaft arrangement for an electric machine
WO2010040534A2 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor for an electric motor, use thereof, and device and method for the production thereof
WO2010040533A2 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor for an electric motor
GB2491975A (en) * 2011-06-16 2012-12-19 Williams Hybrid Power Ltd Magnetically loaded composite tapes
GB2513687A (en) * 2012-12-20 2014-11-05 Gkn Hybrid Power Ltd Magnetically loaded composite rotor and methods of making the same

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854558A2 (en) * 1997-01-21 1998-07-22 Isuzu Ceramics Research Institute Co., Ltd. Structure of a rotor for generators and method of manufacturing the same rotor
EP0854558A3 (en) * 1997-01-21 2000-07-12 Isuzu Ceramics Research Institute Co., Ltd. Structure of a rotor for generators and method of manufacturing the same rotor
US6144130A (en) * 1997-01-21 2000-11-07 Isuzu Ceramics Research Institute Co., Ltd. Structure of rotor for generators and method of manufacturing the same rotor
EP1111756A2 (en) * 1999-12-14 2001-06-27 Volkswagen Aktiengesellschaft Electric machine
EP1111756A3 (en) * 1999-12-14 2003-09-24 Volkswagen Aktiengesellschaft Electric machine
DE102008050807A1 (en) * 2008-10-08 2010-04-22 Pro Diskus Ag Rotor for an electric machine
WO2010040534A2 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor for an electric motor, use thereof, and device and method for the production thereof
WO2010040533A2 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor for an electric motor
DE102008050801A1 (en) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor shaft arrangement for an electric machine
WO2010040534A3 (en) * 2008-10-08 2010-08-12 Pro Diskus Ag Rotor for an electric motor, use thereof, and device and method for the production thereof
WO2010040533A3 (en) * 2008-10-08 2010-08-12 Pro Diskus Ag Rotor for an electric motor
GB2491975A (en) * 2011-06-16 2012-12-19 Williams Hybrid Power Ltd Magnetically loaded composite tapes
GB2491975B (en) * 2011-06-16 2016-04-27 Gkn Hybrid Power Ltd Magnetically loaded composite rotors and tapes used in the production thereof
GB2513687A (en) * 2012-12-20 2014-11-05 Gkn Hybrid Power Ltd Magnetically loaded composite rotor and methods of making the same
CN104871413A (en) * 2012-12-20 2015-08-26 Gkn混合动力有限公司 Magnetically loaded composite rotor and methods of making the same
CN104871413B (en) * 2012-12-20 2017-08-11 Gkn混合动力有限公司 Magnetic loading composite rotors and the method for making magnetic loading composite rotors
GB2513687B (en) * 2012-12-20 2020-04-01 Gkn Hybrid Power Ltd Magnetically loaded composite rotor and methods of making the same

Also Published As

Publication number Publication date
GB9512395D0 (en) 1995-08-16
GB9525133D0 (en) 1996-02-07

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