ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,930, issued on Oct. 14, was assigned to Donaldson Co. Inc. (Bloomington, Minn.).
"Fume extractor" was invented by Jacob C. Savstrom (Mound, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fume extractor has an extractor housing (110, 210) defining an outlet (106, 206). A hose (120, 220) is coupled to the extractor housing that defines a first inlet (102, 202). A diffusion plate (130, 230) is coupled to the extractor housing that defines a plurality of openings (132, 232) cumulatively defining a second inlet (104, 204). A fan (280, 530) is disposed in the extractor housing, where the fan configured to connect each of the first inlet and the se...