ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,989, issued on Sept. 29.
"Trailer dolly apparatus" was invented by Randal D. Walton (Chubbuck, Idaho).
According to the abstract* released by the U.S. Patent & Trademark Office: "A load-bearing trailer dolly which connects a tongue-type boat, utility or other trailer to a towing tandem trailer and bears weight from the trailer during towing. The trailer dolly is characterized by an axle mounted on a pair of wheels. A dolly frame height-adjustable trailer hitch that receives a primary or a secondary trailer. The adjustable hitch on the trailer dolly allows horizontal leveling. A shock-absorbing spring is fitted between the axle mount and the dolly frame for cushioning the dolly f...