Patent ID: 7699022
Filing Date: 2010-04-20
Classification: C23C

Abstract:
1. Equipment for the zonal surface treatment of an article, by dielectric barrier discharge, in the presence of a treatment gas mixture, characterized by the following measures being implemented: a) it comprises a hollow metal electrode for the gas mixture to flow therein and for this gas mixture to be conveyed right into the discharge zone; b) the electrode being divided into individual elements each capable of being swung about a central shaft in order to provide a sufficient distance between the swung-away element in question and that zone of the article opposite the element in question so that the discharge cannot extend therein; c) the central swing shaft serves as a channel for the gas mixture to flow within the electrode, and is provided with outlet orifices for the gas mixture to enter the discharge zone, each outlet orifice being associated with an individual element of the electrode; and d) when one of the electrode elements is swung away, the outlet orifice associated therewith is blocked, the gas mixture being able to escape only via the outlet orifices of the elements that are not swung away.