International Standard Electric Corporation

Nokia Graetz

Herbert Hemminger

Michael Schlipf

Wolfgang Schlayer

Oxide cathode wires are produced by coating tungsten wires with emissive material by cataphoretic coating. It is important for the coating to have a substantially uniform thickness over the entire surface of the wire. This is achieved in a simple manner by reversing the polarity of the direction of current flow for a short time at the beginning of the coating process, so that the tungsten wire to be coated is connected as an anode. The remainder of the coating process is performed in a known manner with a tungsten wire connected as a cathode.

Method of coating cathode wires by cataphoretic coating

During color-picture tube manufacture, faceplate panels must be set down on conveying devices several times. To prevent damage to the faceplate glass when the panels are being set down, the bearing on the conveying device is a wire fabric.

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Schorndorf, Germany

Herbert Hemminger