ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,390, issued on June 3, was assigned to AKTIEBOLAGET SKF (Sweden).
"Bearing unit" was invented by Andrea A Bertolini (Carrara, Italy), Fausto Baracca (Massa, Italy) and Alessio Nebbia Colomba (Pisa, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bearing unit is disclosed, which includes a new labyrinth sealing device designed for use in the ventilation industry that prevents entry of contaminants therein. The sealing device according to the present disclosure provides a "contactless" sealing device, i.e. one without contacting elements (for example elastomer lips); and a bearing unit with a low frictional torque, due only to the internal geome...