Abstract: The invention relates to an ultrasonic standing-wave atomizer arrangement for producing a paint spray mist for painting a workpiece, with a sonotrode, with a component arranged lying opposite the sonotrode, a standing ultrasonic field being formed in the intermediate space between the sonotrode and the component in the case of operation, and with at least one paint feeding device, which introduces the paint into the intermediate space for the atomizing process at at least one paint discharge point. An air supply device, interacts with at least one air distribution device. The air distribution device has a number of clearances, which serve for blowing out air, the clearances being arranged in such a way that between the at least one paint discharge point and the sonotrode, and also between the at least one paint discharge point and the component, there is formed at least one region with a blocking air flow, by which air flow wetting of the sonotrode or of the component with paint is substantially avoided.

Abstract: An insulation piece for a pipeline conveys electrically conductive liquids from a point that is at a ground potential to a point connected to a high voltage. The liquid is conveyed discontinuously by portion-by-portion transport by the carriage flow of the liquid being interrupted. The insulation piece is periodically free of liquid, corresponding to the interruptions in the carriage flow. The insulation piece is a hollow body, and its unobstructed width is equal to or greater than that of the pipeline. Connecting pieces for connecting to the pipeline are provided on the end faces of the insulation piece, which are closed in places by terminating elements, and which connecting pieces are of the same diameter as the adjacent pipeline. The connecting pieces pass through the terminating elements, rest against them to form a seal, and each have a toroidal-form attachment on the outside at their inner end.