ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,808, issued on April 7, was assigned to MABUCHI MOTOR Co. LTD. (Chiba, Japan).
"Centrifugal fan and fixing method" was invented by Kenji Shiraki (Chiba, Japan), Tetsushi Yoshikawa (Chiba, Japan) and Sakie Kawakami (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A centrifugal fan includes a first portion in a rotor, and a second portion in a fan unit and having a greater linear coefficient of expansion than that of the first portion. The first portion has a top portion having a flat surface and a first tubular portion. The second portion has a main portion located in a first axial direction with respect to the top portion, a second tubul...