ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,880, issued on June 24, was assigned to HITACHI LTD. (Tokyo).
"Railroad vehicle" was invented by Sota Kimura (Tokyo), Kyouji Takahara (Tokyo) and Kimiyasu Yoshimura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rail vehicle including an underframe that contributes to improvement in assembly and that is light in weight and high in rigidity is provided. The rail vehicle includes an underframe including a floor body structure that forms a floor surface and a bolster. The bolster includes a first shape member arranged at a middle portion of the bolster, at least part of the first shape member being formed by extrusion along a widthwise directi...