ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,959, issued on March 17, was assigned to SANYO DENKI Co. LTD. (Tokyo).
"Axial fan" was invented by Yoshihisa Yamazaki (Tokyo) and Satoshi Tateyama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An axial fan includes: an impeller cup including a blade extending in a radial direction; a motor configured to rotate the impeller cup; and a housing accommodating the impeller cup and the motor. The housing includes: a casing portion covering an outer periphery of the impeller cup; a base portion supporting the motor; and a spoke portion connecting the base portion and the casing portion. The casing portion includes an inlet surface where air is dra...