MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202617078533 A) filed by New York Air Brake LLC on June 25, 2026, for Variable Valve For Rail Car Braking System.
Inventor includes Brushwood, Daniel.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: A variable valve (10) that can proportion the amount of pressure provided by the control valve (CV) of a rail car to the brake cylinder (BC) of the rail car based on the loaded state of the rail car. The variable valve (10) has an arm (14) that extends to contact the side frame of a rail car in response to a brake application to detect the loaded state of the car. The arm (14) provides a variable amount of biasing force against a proportional spool (60) that is moveable to close communication between the pressure output (22) from the control valve (CV) and the pressure inlet (26) of the brake cylinder (BC). As a result, the proportional spool (60) will close communication between the control valve (CV) and the brake cylinder (BC) at a lower pressure for an unloaded rail car than a more fully loaded car.
Disclaimer: Curated by HT Syndication.
