ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,004, issued on May 19.

"Range-extending hybrid transmission system" was invented by Yueting Jia (Rancho Palos Verdes, Calif.), Pan Ni (Rancho Palos Verdes, Calif.) and Lin Ma (Rancho Palos Verdes, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A range-extending hybrid transmission system includes a first rotary power source, a generator-motor, a differential, and driving wheels. The system includes a first shaft extending from the rotary power source and a first clutch disposed on the first shaft. A second clutch is spaced apart from the first clutch. A generator-motor is connected to the first shaft or to a second shaft that is mechanically c...