ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,896, issued on Feb. 3.
"Bogie frame for rail vehicles made from an aluminum casting" was invented by Lothar Thoni (Jakobsbad, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a bogie frame (1) for rail vehicles having at least two wheelsets, the bogie frame comprising two longitudinal members (3), which extend parallel to each other above the axle bearings, one or more cross-members (2) connected to the longitudinal members (3), and a receiving region (5) for functional elements, the bogie frame (1) being produced completely as a single casting of an aluminum alloy in a sand casting process, said casting having a ho...