C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
316/47, 204/97.0
C25D 17/06 (2006.01) C25D 1/12 (2006.01) C25D 13/02 (2006.01) H01J 9/04 (2006.01)
Patent
CA 1131695
4.4.1979 1 PHN 9267 ABSTRACT: It is possible to electropho- retically coat cathode shafts with an emissive layer having excellent mechanical properties by means of a device which comprises an electrophoresis bath and a jig which can be dipped therein and in which cathode shafts can be placed, which jig is composed of a plate of insula- tion material which is provided on the two surfaces with a first and a second electrically conductive layer, said jig having a large number of apertures in each of which a cathode shaft can be provided in a fitting manner such that each cathode shaft electrically contacts the first electrically conductive layer, and the plate is such a thickness that the side of the shaft to be coated is located at a distance from the second conductive layer, which distance is small in relation to the thickness of the jig, which jig is provided at least with a sealing non- electrically conductive layer on the side of the first conductive layer.
338384
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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