Patent ID: 6837929

Claim:
A device for providing a layer of a coating material on the inner side of a bowl-shaped rectangular display window of a color display tube, which device comprises a turntable which is rotatable about an axis of rotation oriented transversely to the turntable and tiltable about a tilt axis oriented transversely to the axis of rotation, said turntable having a holder for securing the display window on the turntable in such a way that its axis of symmetry oriented transversely to the inner side coincides with the axis of rotation of the turntable and of four collection cups which are secured on the turntable at the area of the corners of a display window to be arranged on the turntable, so that, during operation of the device, a part of a suspension provided on the inner side of the display window and drained off the display window during the rotation can be collected by said collection cups, characterized in that the turntable is further provided with a co-rotating central collection cup and with means for draining the part of the suspension collected in the collection cups near the corners of the display window to the central collection cup during operation of the device.