ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,968, issued on Dec. 16, was assigned to COAVIS (Seong-si, South Korea).
"Electric water pump" was invented by Hyuntae Lee (Sejong-si, South Korea) and Wookeun Lee (Sejong-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an electric water pump including: a lower casing to which the bottom of a shaft is fixed; an upper casing coupled to the top of the lower casing and including an upper support part extending from the inside; an impeller inserted into an internal space formed by coupling the lower casing with the upper casing and having a thrust plate coupled thereto; and a rotor formed integrally with the impeller, wherein a...