ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,689, issued on Sept. 9, was assigned to ORBITJACK LLC (Greenville, S.C.).

"Trailer jack and transport systems employing a spherical load-bearing transport ball, and sport, recreational and utility trailer systems and methods employing the same" was invented by Mark Christopher Schmidt (Windermere, Fla.) and Edward Joel Rodriguez (Kissimmee, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A trailer jack and transport system providing improved rolling and steerable motion to sport, recreational and utility trailers, when operating on diverse kinds of ground surfaces, including pavement, dirt, sand, and mud, without use of caster-style wheels. The...