H - Electricity – 01 – F
Patent
H - Electricity
01
F
317/26, 204/22.6
H01F 7/16 (2006.01) C23C 18/36 (2006.01) C25D 3/12 (2006.01) H01F 7/08 (2006.01)
Patent
CA 1095977
Abstract of the Disclosure A method of manufacturing an electro-magnet, comprising two tubular poleshoes which are coaxially arranged with respect to each other and in which an armature is slideable, the inner surface of the poleshoes and the outer surface of the armature being successively degreased and pickled, after which they are provided with a nickel layer by electroplating, and a nickel phosphide layer formed by electroless deposition of a nickel-phosphorus layer which is converted to nickel-phosphide by heating to about 400°C. The electro- magnets manufactured by means of the method in accordance with the invention are particularly suitable for use in matrix printers.
290165
Richter Hermann
Weber Wendelin
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
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