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
GB9505/51A
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 LtdfiledCriticalBritish Thomson Houston Co Ltd
Publication of GB691644ApublicationCriticalpatent/GB691644A/en
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
H01F27/2455—Magnetic cores made from sheets, e.g. grain-oriented using bent laminations
Abstract
691,644. Transformers and inductors. BRITISH THOMSON-HOUSTON CO., Ltd. April 24, 1951 [May 4, 1950], No. 9505/51. Class 38 (ii). The lap and butt joints in successive layers or groups of layers of a laminated magnetic core for stationary induction apparatus are displaced from one another, in the direction of the magnetic circuit length, alternatively in opposite directions in accordance with a repetitive zig-zag sequence of more than four steps, the corresponding joints in each sequence being in the same plane perpendicular to the plane of the laminations. Figs. 1 and 6 show respectively four step joint sequences in bent strip and flat stacked lamination type cores, and modifications consist, of various forms of fivestep sequences, of which the relative mechanical strengths are compared. Specification 673,821 is referred to.
GB9505/51A1950-05-041951-04-24Improvements in and relating to laminated magnetic cores
ExpiredGB691644A
(en)
DC motor using annular permanent magnets - has lozenge-shaped coils wound on soft iron cores with angle of lozenge inversely proportional to number of windings