US 12,446,745 B2
Unopenable canister for vacuum cleaner
Michael W. Seitz, Houston, TX (US)
Appl. No. 17/438,508
Filed by Michael W. Seitz, Houston, TX (US)
PCT Filed Mar. 13, 2020, PCT No. PCT/US2020/022547
§ 371(c)(1), (2) Date Sep. 13, 2021,
PCT Pub. No. WO2020/186136, PCT Pub. Date Sep. 17, 2020.
Claims priority of provisional application 62/817,669, filed on Mar. 13, 2019.
Prior Publication US 2022/0125259 A1, Apr. 28, 2022
Int. Cl. B01D 45/00 (2006.01); A47L 9/16 (2006.01); B01D 45/16 (2006.01); B01D 50/20 (2022.01); B04C 3/06 (2006.01); B04C 9/00 (2006.01)
CPC A47L 9/1683 (2013.01) [A47L 9/1608 (2013.01); A47L 9/165 (2013.01); A47L 9/1666 (2013.01); A47L 9/1691 (2013.01); B01D 45/16 (2013.01); B01D 50/20 (2022.01); B04C 3/06 (2013.01); B04C 9/00 (2013.01); B04C 2009/004 (2013.01)] 15 Claims
OG exemplary drawing
 
1. Apparatus comprising
a vessel having a longitudinal axis and an annular cross section transverse to the longitudinal axis, said vessel having a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end, said second end being closed, said vessel being impervious except for the inlet and the outlet,
a vacuum actuated valve biased toward a closed position positioned to seal the inlet, and
a filter positioned in covering relationship with the outlet,
wherein the vessel is unopenable without being damaged.