GB1433748A - Magnetic induction couplings - Google Patents
Magnetic induction couplingsInfo
- Publication number
- GB1433748A GB1433748A GB4428272A GB4428272A GB1433748A GB 1433748 A GB1433748 A GB 1433748A GB 4428272 A GB4428272 A GB 4428272A GB 4428272 A GB4428272 A GB 4428272A GB 1433748 A GB1433748 A GB 1433748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- energizing coil
- stator
- regard
- extension
- shaft
- 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
Links
- 230000008878 coupling Effects 0.000 title abstract 4
- 238000010168 coupling process Methods 0.000 title abstract 4
- 238000005859 coupling reaction Methods 0.000 title abstract 4
- 230000005291 magnetic effect Effects 0.000 title abstract 4
- 230000006698 induction Effects 0.000 title abstract 2
- 239000012809 cooling fluid Substances 0.000 abstract 2
- 239000010425 asbestos Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
1433748 Magnetic couplings PYE Ltd 7 Sept 1973 [25 Sept 1972] 44282/72 Addition to 1261894 Heading H2A The magnetic induction coupling of the parent Specification includes a rotor 1 with axial polepieces mounted on a first shaft 14; a disc 7 of non-ferromagnetic material mounted on a second shaft 9; and a stator 5 with an extension 16 forming both a surrounding casing and a return path for the magnetic flux, the extension 16 definining with the outer periphery of the rotor 1 a radial airgap 19. This coupling which includes an energizing coil 6 on the stator 5 is modified in one or more of the following respects: (a) holes and passages are provided for the circulation of cooling fluid, e.g. air, in the divided flow path shown arrowed; (b) the energizing coil 6 is mounted on spacers and formed with gaps to facilitate circulation of the cooling fluid; (c) the energizing coil is tapered, e.g. trapezoidal, in radial cross-section; (d) the effect of the energizing coil is supplemented or opposed by one or more permanent magnets; (e) a flywheel 51 is fitted to the output shaft 9 within a casing extension 16a; (f) the face position 4 of the stator 5 is laminated; and (g) the disc 7 is insulated from its supporting hub 8 by a heat insulating ring 50 of asbestos cement or ceramic material. With regard to (a) an external fan or pump may assist fluid flow; with regard to (e) the periphery of the flywheel may be grooved or notched to co-operate with a sensor to act as a tachometric device; and with regard to (f) the laminations may extend in radical or axial planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4428272A GB1433748A (en) | 1972-09-25 | 1972-09-25 | Magnetic induction couplings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4428272A GB1433748A (en) | 1972-09-25 | 1972-09-25 | Magnetic induction couplings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1433748A true GB1433748A (en) | 1976-04-28 |
Family
ID=10432577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4428272A Expired GB1433748A (en) | 1972-09-25 | 1972-09-25 | Magnetic induction couplings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1433748A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987000990A1 (en) * | 1985-07-31 | 1987-02-12 | Berger, Johann | Eddy current brake for motor vehicles |
| FR2863787A1 (en) * | 2003-12-11 | 2005-06-17 | Telma | Electromagnetic retarder`s annular rotor for terrestrial vehicle`s transmission, has undercut formed between lateral edge of axial end of fin and lateral side of induced disc for forming heat barrier |
| GB2501016A (en) * | 2010-11-17 | 2013-10-09 | Ricardo Uk Ltd | Cooling of a magnetic coupling of a flywheel |
| US8808096B2 (en) | 2009-03-27 | 2014-08-19 | Ricardo Uk Limited | Flywheel |
| US9273755B2 (en) | 2009-03-27 | 2016-03-01 | Ricardo Uk Limited | Method and apparatus for balancing a flywheel |
| US9391489B2 (en) | 2010-11-17 | 2016-07-12 | Ricardo Uk Limited | Magnetic coupler having magnets with different magnetic strengths |
| US9704631B2 (en) | 2009-03-27 | 2017-07-11 | Ricardo Uk Limited | Flywheel |
| US9718343B2 (en) | 2011-04-20 | 2017-08-01 | Ricardo Uk Limited | Energy storage system having a flywheel for a vehicle transmission |
| DE102023213178A1 (en) * | 2023-12-21 | 2025-06-26 | Robert Bosch Gesellschaft mit beschränkter Haftung | Intermediate piece and method for mounting a brake disc cooperating with an eddy current brake on a shaft |
-
1972
- 1972-09-25 GB GB4428272A patent/GB1433748A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987000990A1 (en) * | 1985-07-31 | 1987-02-12 | Berger, Johann | Eddy current brake for motor vehicles |
| FR2863787A1 (en) * | 2003-12-11 | 2005-06-17 | Telma | Electromagnetic retarder`s annular rotor for terrestrial vehicle`s transmission, has undercut formed between lateral edge of axial end of fin and lateral side of induced disc for forming heat barrier |
| WO2005057764A1 (en) * | 2003-12-11 | 2005-06-23 | Telma | Advanced electromagnetic retarder annular rotor |
| US8808096B2 (en) | 2009-03-27 | 2014-08-19 | Ricardo Uk Limited | Flywheel |
| US9273755B2 (en) | 2009-03-27 | 2016-03-01 | Ricardo Uk Limited | Method and apparatus for balancing a flywheel |
| US9704631B2 (en) | 2009-03-27 | 2017-07-11 | Ricardo Uk Limited | Flywheel |
| GB2501016A (en) * | 2010-11-17 | 2013-10-09 | Ricardo Uk Ltd | Cooling of a magnetic coupling of a flywheel |
| GB2501016B (en) * | 2010-11-17 | 2014-06-18 | Ricardo Uk Ltd | An improved coupler |
| US9391489B2 (en) | 2010-11-17 | 2016-07-12 | Ricardo Uk Limited | Magnetic coupler having magnets with different magnetic strengths |
| US9718343B2 (en) | 2011-04-20 | 2017-08-01 | Ricardo Uk Limited | Energy storage system having a flywheel for a vehicle transmission |
| DE102023213178A1 (en) * | 2023-12-21 | 2025-06-26 | Robert Bosch Gesellschaft mit beschränkter Haftung | Intermediate piece and method for mounting a brake disc cooperating with an eddy current brake on a shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |