ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,030, issued on March 3.
"Quick-release air knife of package thermal-shrinking oven" was invented by Tzu-Chin Hung (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A quick-release air knife of a package thermal-shrinking oven includes at least one fixing ring, at least one pair of fixing elements, a plurality of air knife tubes, and air knife blades. The fixing ring is at least formed, in an interior thereof, with a through hole and at least one pair of notches and fixing holes are formed in a periphery of the through hole. The fixing elements respectively extend through the fixing holes to connect to a bottom portion of a hot airflow c...