GB675352A - Improvements in and relating to brakes, clutches and the like - Google Patents
Improvements in and relating to brakes, clutches and the likeInfo
- Publication number
- GB675352A GB675352A GB28676/50A GB2867650A GB675352A GB 675352 A GB675352 A GB 675352A GB 28676/50 A GB28676/50 A GB 28676/50A GB 2867650 A GB2867650 A GB 2867650A GB 675352 A GB675352 A GB 675352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electromagnet
- permanent magnet
- energised
- path
- axially spaced
- 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
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/002—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/002—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially axial gap in which the fluid or medium consisting of small particles is arranged
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
675,352. Clutches. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 23, 1950 [Dec: 2, 1949], No. 28676/50. Class 80 (ii). [Also in Group XXXIV] An electromagnetic clutch or coupling comprises relatively rotatable members 2 and 20 of which the member 2 comprises a permanent magnet, and the member 20 an electromagnet excited through slip rings 41. The, permanent magnet member 2 has spaced polar areas divided, by a non-magnetic spacer element 15, these areas defining a single air gap between them and a pair of axially spaced air gaps with the casing of the electromagnet. When the electromagnet is not energised the flux passes radially across the axially spaced air gaps, so that a quantity' of magnetic fluid 30, which may comprise magnetic iron particles suspended in oil, is solidified and acts to transmit torque from one member to the other. When the electromagnet is energised the flux path is diverted from its radial path to an axial path across the single air gap between the permanent magnet pole members. The magnetic fluid is thus concentrated in the circumferential grooves 16 and -24 in the permanent and electromagnet casings and no longer acts as a braking medium. Reference has been directed by the Comptroller to Specification 649,553.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US675352XA | 1949-12-02 | 1949-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB675352A true GB675352A (en) | 1952-07-09 |
Family
ID=22076648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28676/50A Expired GB675352A (en) | 1949-12-02 | 1950-11-23 | Improvements in and relating to brakes, clutches and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB675352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008024957A1 (en) * | 2006-08-24 | 2008-02-28 | Lord Corporation | Controllable magnetorheological fluid valve, devices, and methods |
| EP2065614A1 (en) * | 2007-11-28 | 2009-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Magnetorhelogical force transmission device |
-
1950
- 1950-11-23 GB GB28676/50A patent/GB675352A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008024957A1 (en) * | 2006-08-24 | 2008-02-28 | Lord Corporation | Controllable magnetorheological fluid valve, devices, and methods |
| EP2065614A1 (en) * | 2007-11-28 | 2009-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Magnetorhelogical force transmission device |
| US8205728B2 (en) | 2007-11-28 | 2012-06-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Magnetorheological force transmission device |
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