ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,058, issued on March 24.
"Rotary machine with refrigerant flow path" was invented by Kai Iijima (Tokyo), Yuji Sasaki (Tokyo) and Hikaru Sugiura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary machine includes an electric motor including a rotor and a stator, a rotating shaft to be rotated driving the electric motor, an impeller attached to the rotating shaft, an inner case surrounding the stator and to which the stator is fixed, and an outer portion externally mounted on the inner case. The outer portion includes an inner circumferential surface facing an outer circumferential surface of the inner case, and a flow path groove formed ...