MUMBAI, India, July 25 -- Intellectual Property India has published a patent application (202517065821 A) filed by Het Elastomertechnik Gmbh, Wiesbaden, Germany, on July 10, for 'process for producing under-sleeper pads for a ballasted track.'
Inventor(s) include Frottier, Jean-Pierre; and Goldhausen, Tino.
The application for the patent was published on July 25, under issue no. 30/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a process for producing under-sleeper pads (52) for elastic under-sleeper padding of concrete sleepers (80) for ballasted tracks, wherein the under-sleeper pad (52) comprises a lower elastic decoupling layer (62) for laying onto the ballast bed and an upper adhesion promotion layer (72) for anchoring in the concrete sleeper (80), wherein the top face of the adhesion promotion layer (72) comprises anchor elements (98) which are configured for embedding into the fresh concrete of the concrete sleeper (80) and which anchor the under-sleeper pad (52) in the concrete sleeper (80) after curing of the concrete, wherein a continuous under-sleeper pad strand (50) is produced by extrusion in an extrusion apparatus (10), wherein an elastic decoupling layer strand (60) and an adhesion promotion layer strand (70) are together continuously extruded from the same profile die (32) in an extrusion process and through the common extrusion from the same profile die (32) are inseparably bonded to one another, and wherein the under-sleeper pad strand (50) thus produced is subsequently cut to size into individual pieces of under-sleeper pads (52) according to the shape of the concrete sleepers (80)."
The patent application was internationally filed on Dec. 11, 2023, under International application No.PCT/EP2023/085151.
Disclaimer: Curated by HT Syndication.
