MUMBAI, India, Aug. 8 -- Intellectual Property India has published a patent application (202517063541 A) filed by Dellner Dampers Ab, Flen, Sweden, on July 3. for 'railway damper valve assembly, and railway damper comprising such a railway damper valve assembly.'
Inventor(s) include Lizell, Magnus; and Arana Escobedo, Andre.
The application for the patent was published on Aug. 8, under issue no. 32/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a railway damper valve assembly (10, 10', 10'') comprising - a valve body (11) with a primary chamber (12) for connecting to a hydraulic flow passage (13); - a sleeve (20) slidably arranged on an outer circumference of the valve body (11) and delimiting the primary chamber (12); - a spring (15) configured to bias the sleeve (20) towards a meeting surface (16) on a stop (17) to reach a closed position, said closed position being a position where the primary chamber (12) is outwardly sealed for preventing a flow of hydraulic fluid from the primary chamber (12) out of the valve assembly (10, 10', 10'') between the meeting surface (16) and the sleeve (20); wherein the valve assembly (10, 10', 10'') is pressure-balanced by the spring (15) such that a predetermined opening pressure of hydraulic fluid in the primary chamber (12) causes the sleeve (20) to move away from the meeting surface (16), thereby enabling a flow of hydraulic fluid from the primary chamber (12) in a radial direction (R) out of the valve assembly (10, 10', 10''). The invention also relates to a railway damper (100) comprising such a railway damper valve assembly (10, 10', 10'')."
The patent application was internationally filed on Jan. 30, 2024, under International application No.PCT/SE2024/050079.
Disclaimer: Curated by HT Syndication.
