ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,801, issued on April 7, was assigned to LIPPERT COMPONENTS INC. (Elkhart, Ind.).
"Axle suspension system" was invented by Timothy D. Schultz (Cassopolis, Mich.) and John Shotwell (Edwardsburg, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An axle suspension system is suited for a trailer including a trailer frame, an axle, and left and right wheels respectively connected on opposite ends of the axle. The axle suspension system includes a swing arm pivotably securable at one end to the trailer frame and connectable at an opposite end to the axle via a connector. The connector includes a bottom surface connected to the swing arm. A spring is co...