Method of manufacturing a permanent magnet which is to be arrang

Details Method of manufacturing a permanent magnet which is to be arrang Method of manufacturing a permanent magnet which is to be arrang

1980-09-10

1983-01-25

Larson, Lowell A.

Metal working

Method of mechanical manufacture

Electrical device making

225 97, 53121, 53435, 335229, 335306, 241283, 29412, B65B 6124, B26F 300, H01F 700, H01F 702

Patent

active

043695671

ABSTRACT:
A method of manufacturing a plate-shaped permanent magnet (7) which is to be arranged in an air gap of a core (1) for a transformer or choke coil and which consists of a number of permanent magnetic portions (29) which are made of a metal alloy having a high magnetic remanence and which are magnetized perpendicularly to the plane of the plate. A plate (11) of the alloy is fixed between two insulating foils (13, 15) after which this assembly is arranged on a flat backing (17) and is rolled in two mutually perpendicular directions (25, 27) by means of a cylinder (19) whose outer surface is provided with grooves (23). The plate (11) is thus very simply fractured to form a very large number of portions (29).

REFERENCES:
patent: 2325832 (1943-08-01), Christensen
patent: 3396452 (1968-08-01), Sato et al.
patent: 3480189 (1969-11-01), Topolski et al.
patent: 3534912 (1970-10-01), Brown
patent: 3562057 (1971-02-01), McAlister et al.
patent: 3562058 (1971-02-01), Boyd

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