ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,292, issued on Aug. 19.
"Drive unit for rail lubricating devices and a method for using the same" was invented by Darja Goltnik (Velenje, Slovenia) and Bojan Pavcnik (Velenje, Slovenia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drive unit for rail lubricating devices and a method for using the same solves the problem of the using impact of rolling stock wheel to drive lubricating device, and preventing or mitigating peak caused by impact and resulting pressure overload or uncontrolled application of the lubricating medium in different climatic conditions or at different external temperatures by using the impact of at least one wheel of rail ve...