GB384189A - Improvements in and relating to laminated cores for electrical apparatus - Google Patents

Improvements in and relating to laminated cores for electrical apparatus

Info

Publication number
GB384189A
GB384189A GB14294/32A GB1429432A GB384189A GB 384189 A GB384189 A GB 384189A GB 14294/32 A GB14294/32 A GB 14294/32A GB 1429432 A GB1429432 A GB 1429432A GB 384189 A GB384189 A GB 384189A
Authority
GB
United Kingdom
Prior art keywords
laminations
cores
relating
dynamo
transformers
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
Application number
GB14294/32A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB384189A publication Critical patent/GB384189A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

384,189. Insulation for dynamo-electric machines ; transformers. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Pfalzgraff, R. M.; 13, Franklin Street, Lynn, Massachusetts, U.S.A.) May 19, 1932, No. 14294. Convention date, May 20, 1931. [Classes 35 and 38 (ii).] Laminations of cores of dynamo-electric machines, transformers, &c. are insulated by a coating of iron phosphate formed by immersing the laminations in a solution containing phosphoric acid and iron oxide. The oxide may be furnished by mill scale on the surface of the laminations. It is stated that conductor bars cast in the slots are insulated from cores thus formed.
GB14294/32A 1931-05-20 1932-05-19 Improvements in and relating to laminated cores for electrical apparatus Expired GB384189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384189XA 1931-05-20 1931-05-20

Publications (1)

Publication Number Publication Date
GB384189A true GB384189A (en) 1932-12-01

Family

ID=21899834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14294/32A Expired GB384189A (en) 1931-05-20 1932-05-19 Improvements in and relating to laminated cores for electrical apparatus

Country Status (1)

Country Link
GB (1) GB384189A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025379A (en) 1973-05-03 1977-05-24 Whetstone Clayton N Method of making laminated magnetic material
GB2208974A (en) * 1987-08-21 1989-04-19 Johnson Electric Ind Mfg Electric motor armature
DE29807951U1 (en) 1998-05-04 1998-07-23 Siemens AG, 80333 München AC magnet with short-circuit ring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025379A (en) 1973-05-03 1977-05-24 Whetstone Clayton N Method of making laminated magnetic material
GB2208974A (en) * 1987-08-21 1989-04-19 Johnson Electric Ind Mfg Electric motor armature
DE29807951U1 (en) 1998-05-04 1998-07-23 Siemens AG, 80333 München AC magnet with short-circuit ring

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