ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,476, issued on Dec. 16, was assigned to MITSUBA Corp. (Gunma, Japan).
"Motor having a case for accommodating a stator" was invented by Yasushi Yoshida (Gunma, Japan) and Yutaro Jo (Gunma, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A case 31 has a total of first to sixth flat parts 32A to 32F arranged in a circumferential direction of the case 31 and a total of first to sixth arced parts 32a to 32f connecting adjacent flat parts with each other. When viewed in an axial direction of a shaft 44, inner circumferential surfaces CF of the first to sixth arced parts 32a to 32f are each formed in an arced shape having a radius R1 and a center AC o...