ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,625, issued on Feb. 3, was assigned to AMOTECH Co. LTD. (Incheon, South Korea).
"Fan and manufacturing method therefor" was invented by Hong Geun Lee (Incheon, South Korea), Hee Chul Uhm (Incheon, South Korea) and Se Ki Lee (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a fan capable of preventing oil-scattering without using an oil-scattering prevention washer and simultaneously preventing the escape of a rotary shaft due to a lift, and a manufacturing method therefor. The fan includes: a cylindrical fan housing; a base having a bearing housing integrally formed therewith, the bearing housing protruding from the re...