GB629919A - Improvements in or relating to electro-magnetic eddy-current couplings - Google Patents
Improvements in or relating to electro-magnetic eddy-current couplingsInfo
- Publication number
- GB629919A GB629919A GB3169447A GB3169447A GB629919A GB 629919 A GB629919 A GB 629919A GB 3169447 A GB3169447 A GB 3169447A GB 3169447 A GB3169447 A GB 3169447A GB 629919 A GB629919 A GB 629919A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- apertures
- lying
- electromagnets
- pole
- 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
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)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
629,919. Eddy current couplings. KREBS, E. W. Dec. 1, 1947, No. 31694. [Class 35] The driven member of an eddy current coupling constitutes a disc of magnetic material lying between two electromagnets, each having two polar members constituting rings coaxial with the axis of rotation, and in order to reduce the inertia of the driven member it has apertures lying between the aligned poles. In the form shown in Fig. 1 the two magnets A<1>, A<4> are united by circumferential bolts with distance pieces A<3> of non-magnetic material and the apertures in the disc C<2> (Figs. 2, 3) lie in each of the disc portions between the annular pole pairs N<1>, S<2> and N<2>, S<1> and are so arranged as to make the flux density in both regions the same. In a modified construction (Fig. 5), each annular pole member has a ring of pole pieces L or L<1> secured to it to form an imbricated pole structure and polepieces of unlike polarity of the two electromagnets are aligned; the apertures in the driven disc may be constituted by radial slots extending across the field area. The portion of the disc lying between two rings of apertures may be cut away, for example to form spokes, still further to reduce the inertia. The rim of the disc may carry an inserted ring of high conductivity. Ventilation may be set up by fins G, Fig. 1, and an enclosing casing G<1>.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3169447A GB629919A (en) | 1947-12-01 | 1947-12-01 | Improvements in or relating to electro-magnetic eddy-current couplings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3169447A GB629919A (en) | 1947-12-01 | 1947-12-01 | Improvements in or relating to electro-magnetic eddy-current couplings |
Publications (1)
Publication Number | Publication Date |
---|---|
GB629919A true GB629919A (en) | 1949-09-30 |
Family
ID=10327024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3169447A Expired GB629919A (en) | 1947-12-01 | 1947-12-01 | Improvements in or relating to electro-magnetic eddy-current couplings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB629919A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683229A (en) * | 1950-10-13 | 1954-07-06 | Electro Mecanique De Laveyron | Electrodynamic brake |
US2774895A (en) * | 1952-09-23 | 1956-12-18 | Zuckermann Armand | Eddy current brake |
US2806158A (en) * | 1954-12-27 | 1957-09-10 | Burroughs Corp | Magnetic torque transmitting devices |
GB2116779A (en) * | 1982-03-11 | 1983-09-28 | Baylor Co | Improvements in or relating to an eddy current brake |
-
1947
- 1947-12-01 GB GB3169447A patent/GB629919A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683229A (en) * | 1950-10-13 | 1954-07-06 | Electro Mecanique De Laveyron | Electrodynamic brake |
US2774895A (en) * | 1952-09-23 | 1956-12-18 | Zuckermann Armand | Eddy current brake |
US2806158A (en) * | 1954-12-27 | 1957-09-10 | Burroughs Corp | Magnetic torque transmitting devices |
GB2116779A (en) * | 1982-03-11 | 1983-09-28 | Baylor Co | Improvements in or relating to an eddy current brake |
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