GB636127A - Improvements in and relating to ferro-magnetic cores for high frequency machines andapparatus - Google Patents
Improvements in and relating to ferro-magnetic cores for high frequency machines andapparatusInfo
- Publication number
- GB636127A GB636127A GB5725/47A GB572547A GB636127A GB 636127 A GB636127 A GB 636127A GB 5725/47 A GB5725/47 A GB 5725/47A GB 572547 A GB572547 A GB 572547A GB 636127 A GB636127 A GB 636127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- ferro
- insulating material
- magnetic
- mixture
- 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
- 230000005294 ferromagnetic effect Effects 0.000 title abstract 3
- 239000011810 insulating material Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 230000005291 magnetic effect Effects 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000002826 coolant Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
636,127. Magnetic cores; cores for dynamoelectric machines. STIVIN, J. Feb. 27, 1947, No. 5725. Convention date, Dec. 14, 1945. Drawings to Specification. [Classes 35 and 38 (ii)] A ferro-magnetic core for high-frequency machines and apparatus comprises a mixture of small ferro-magnetic particles suspended in a liquid insulating material such as oil, the mixture being circulated through a conduit. The particles may be subjected to the influence of an electromagnetic field, generated by a 'coil wound around the conduit, so that they arrange themselves in the direction of the lines of force, thus forming a number of continuous magnetic paths which are insulated from each other to ensure good permeability of the core. The particles may be long compared with the diameter and the curved surfaces initially covered with solid insulating material. The conduit may be formed into a closed circuit having cooling equipment at one position and the mixture continually fed through the conduit thus forming a coolant for the machine or apparatus. Specification 219,703, [Class 38 (ii)], is referred to. The Specification as open to inspection under Sect. 91 describes an embodiment in which the insulating material is adapted to solidify so that the electromagnetic influence may be removed. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS636127X | 1945-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB636127A true GB636127A (en) | 1950-04-26 |
Family
ID=5454157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5725/47A Expired GB636127A (en) | 1945-12-14 | 1947-02-27 | Improvements in and relating to ferro-magnetic cores for high frequency machines andapparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB636127A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3287677A (en) * | 1964-05-25 | 1966-11-22 | Westinghouse Electric Corp | High frequency transformer core comprised of magnetic fluid |
| EP0299618A2 (en) * | 1987-06-12 | 1989-01-18 | Minnesota Mining And Manufacturing Company | Preparation process for ferromagnetic metal fibers |
| US5240768A (en) * | 1987-06-12 | 1993-08-31 | Minnesota Mining And Manufacturing Company | Articles containing metal fibers |
-
1947
- 1947-02-27 GB GB5725/47A patent/GB636127A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3287677A (en) * | 1964-05-25 | 1966-11-22 | Westinghouse Electric Corp | High frequency transformer core comprised of magnetic fluid |
| EP0299618A2 (en) * | 1987-06-12 | 1989-01-18 | Minnesota Mining And Manufacturing Company | Preparation process for ferromagnetic metal fibers |
| EP0299618A3 (en) * | 1987-06-12 | 1990-06-20 | Minnesota Mining And Manufacturing Company | Preparation process for ferromagnetic metal fibers |
| US5240768A (en) * | 1987-06-12 | 1993-08-31 | Minnesota Mining And Manufacturing Company | Articles containing metal fibers |
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