ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,446,745, issued on Oct. 21.
"Unopenable canister for vacuum cleaner" was invented by Michael W. Seitz (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dust container for a vacuum cleaner comprises a vessel, a reed valve, and a filter. The vessel has a longitudinal axis and an annular cross section transverse to the longitudinal axis. The vessel has a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end. The second end is closed, and the vessel is impervious except for the inlet and the outlet. A vacuum actuated valve biased toward a closed position is positioned to seal the inlet of the vessel,...