US Patent Issued to ZF Friedrichshafen on June 24 for "Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec" (German Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,931, issued on June 24, was assigned to ZF Friedrichshafen AG (Friedrichshafen, Germany).

"Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec" was invented by Stefan Beck (Eriskirch, Germany), Michael Wechs (WeiBensberg, Germany), Fabian Kutter (Kressbronn, Germany), Thomas Martin (Weissensberg, Germany), Mladjan Radic (Lonsee, Germany), Thomas Riedisser (Sigmarszell, Germany) and Hagen Doepfert (Lindau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bottom bracket gear mechanism for a bicycle or a pedelec includes a gear mechanism shifting group in which a second element of the first gear set is connected to a fi...