ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,727,730, issued on Sept. 8, was assigned to Hako GmbH (Bad Oldesloe, Germany).
"Floor cleaning machine" was invented by Carsten Protz (Altenkrempe, Germany), Bertram Ulrich (Lubeck, Germany) and Richardo Ruiz-Porath (Bad Oldesloe, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A floor cleaning machine with a base, which has a driven cleaning element, and an operating bar that is pivotably attached to the base via a joint and extends between a proximal end and an actuating end. The joint includes a bellows, which is coupled at its opposite ends to the base and the operating bar, a first supporting element, which is arranged inside the bellows and...