MUMBAI, India, Sept. 26 -- Intellectual Property India has published a patent application (202517084478 A) filed by Oerlikon Metco Ag, Wohlen; and Oerlikon Metco (US) Inc., Wohlen, Switzerland, on Sept. 5, for 'plasma torch head for interior coatings and method of manufacturing the torch head.'
Inventor(s) include Cruz, Ricardo; Paolozzi, Marco; Messina, Michel; Michla, Alexander; Muller, Markus; Lopez, Nicolas; Molz, Ronald J.; Enzl, Radek; and Distler, Bernd.
The application for the patent was published on Sept. 26, under issue no. 39/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a plasma torch head for interior coatings of rotationally symmetrical, asymmetrical, or freeform surfaces in concave or convex-shaped cavities of components with a distance between the surfaces to be coated greater than or equal to 40 mm using a plasma spraying process, with a cathode (217) whose tip (305) has a surface roughness of less than or equal to Ra 0.2 pm and preferably has grooves running in the axial direction of the cathode, which is secured by a self-locking thread in the cathode holder (213). Gas tightness with respect to the plasma gas is ensured by one or more high-temperature resistant O- rings (215), with one O-ring preventing gas leakage between the cathode holder (213) and insulation ring (207), and the other preventing gas leakage between the insulation ring (207) and anode (205). The cathode holder (213) has been designed in relation to the flow of the plasma gas so that the outflow velocity of the plasma gas in the holes above the center of the cathode (303) is lower than that below the center. A plasma torch head constructed as disclosed reduces voltage fluctuations over the entire operational life of the torch head and extends its potential service life."
The patent application was internationally filed on Jan. 29, 2024, under International application No.PCT/EP2024/000007.
Disclaimer: Curated by HT Syndication.
