ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,302, issued on April 14, was assigned to LMI US LLC (Rochester, Minn.).
"Mixer ladder assist" was invented by Robert Varao (Oshkosh, Wis.), Bryan Datema (Rochester, Minn.) and Clint Glunz (Rochester, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A concrete mixer vehicle includes a chassis, a cab, a mixer drum assembly coupled to the chassis, a ladder assembly, and an assist assembly. The chassis includes a front end and a rear end. The ladder assembly includes an upper ladder portion and a lower ladder portion. The upper ladder portion is fixed in position relative to the chassis. The lower ladder portion is pivotally coupled to the upper la...