ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,309, issued on Sept. 16, was assigned to MITSUBA Corp. (Gunma, Japan).
"Fan device" was invented by Satoshi Nagamoto (Gunma, Japan) and Hidetake Ota (Gunma, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fan device (1) includes a shroud (4) including a motor support unit (42), a fan (3) disposed on a surface side of the motor support unit (42), and a motor (2) supported on a rear side of the motor support unit (42). Multiple air guide passages (426) each penetrating in a thickness direction at positions spaced apart in a circumferential direction and radially outward from a boss 31 of the fan (3) are formed in the motor support unit (42). T...