ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,060, issued on Feb. 10, was assigned to MEIDENSHA Corp. (Tokyo).

"Coolant flow passage structure in rotating machine" was invented by Yohei Takahashi (Tokyo) and Takahiko Oishi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coolant flow passage structure is provided in a rotating machine capable of reducing the pressure loss of a coolant flowing through a flow passage, thereby securing a smooth flow of the coolant and improving efficiency. A coolant flow passage structure on a cylindrical frame in a motor and cooling the motor includes a flow passage main body in a wall portion of the frame to extend while meandering, and a bypass flow pass...