GB611894A - Improvements in and relating to methods of treating electrical coils - Google Patents
Improvements in and relating to methods of treating electrical coilsInfo
- Publication number
- GB611894A GB611894A GB14411/46A GB1441146A GB611894A GB 611894 A GB611894 A GB 611894A GB 14411/46 A GB14411/46 A GB 14411/46A GB 1441146 A GB1441146 A GB 1441146A GB 611894 A GB611894 A GB 611894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- thermoplastic
- thermosetting
- paper
- temporary
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
611,894. Impregnating-compositions for electrical insulation. BRITISH THOMSONHOUSTON CO., Ltd. May 13, 1946, No. 14411. Convention date, May 14, 1945. [Class 140] [Also in Group XXXV] Transformer, magneto and other electric coils are insulated with both thermosetting and thermoplastic polymeric materials intermixed. A coil 1 of wire insulated with enamel, paper or artificial resin, and wound with paper separators on a temporary or permanent former 2 of shellaccoated kraft paper, of artificial resin or of metal, is inserted in a temporary or permanent casing 5, which may be of metal. The space between the coil and casing is filled with finely divided thermoplastic material 14, the coil meanwhile being preferably vibrated. To prevent subsequent movement of this material it is heated to cause partial cohesion of the particles, or part of the space may be filled with puttylike permeable plastic masses 12, 13, 15, one of which, 13, may hold leads 3 in position, and another, 15, may seal the entry hole. The coil is impregnated under vacuum and pressure with a thermosetting solventless varnish which is polymerized by heat. The thermoplastic filler reduces shrinkage and liability to cracking during polymerization. Suitable thermosetting, thermoplastic and putty-like substances are named.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US611894XA | 1945-05-14 | 1945-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB611894A true GB611894A (en) | 1948-11-04 |
Family
ID=22034205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14411/46A Expired GB611894A (en) | 1945-05-14 | 1946-05-13 | Improvements in and relating to methods of treating electrical coils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB611894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1677337A1 (en) * | 2004-08-30 | 2006-07-05 | Thomson Licensing | Improved deflection coil for cathode ray tube |
-
1946
- 1946-05-13 GB GB14411/46A patent/GB611894A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1677337A1 (en) * | 2004-08-30 | 2006-07-05 | Thomson Licensing | Improved deflection coil for cathode ray tube |
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