Patent 9290214 was granted and assigned to Jungheinrich on March, 2016 by the United States Patent and Trademark Office.
A portal trailer for a tugger train, consisting of a front, rear and middle trailer section, between which respectively a receiving area for a dolly to be carried along is provided, wherein the front is connected with the middle and the middle with the rear trailer section each via a portal-shaped arch and the middle trailer section has a pair of rollers or wheels.