ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,744, issued on Oct. 21, was assigned to Aebi Schmidt Deutschland GmbH (St. Blasien, Germany).
"Self-propelled sweeping machine" was invented by Claus Zumkeller (St. Blasien, Germany) and Martin Ebner (Goerwihl, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A self-propelled sweeping machine has a sweepings pick-up device and a sweepings collection container. The pick-up device has a pick-up head and a conveying section adjoining the head having an ejection and distribution device opening into an interior of the collection container. Sweepings picked up from the traffic surface by the pick-up device can be distributed by the ejection and dist...