US 12,434,181 B1
Air cleaner and filtration assemblies
Steven K. Campbell, Lakeville, MN (US)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Filed by Donaldson Company, Inc., Bloomington, MN (US)
Filed on May 16, 2025, as Appl. No. 19/210,917.
Claims priority of provisional application 63/768,562, filed on Mar. 7, 2025.
Claims priority of provisional application 63/715,456, filed on Nov. 1, 2024.
Int. Cl. B01D 46/00 (2022.01); B01D 46/24 (2006.01); F02M 35/02 (2006.01)
CPC B01D 46/0005 (2013.01) [B01D 46/2411 (2013.01); F02M 35/0205 (2013.01); B01D 2265/025 (2013.01); B01D 2265/04 (2013.01); B01D 2271/027 (2013.01); B01D 2279/60 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An air cleaner housing, the air cleaner housing comprising:
a) a main body defining an interior volume and including an end wall defining a first axial opening with a first diameter; and
b) an outlet assembly secured to the main body at the location of the first axial opening and including:
i) a first part having a first radial flange located on an interior side of the main body end wall and having a first circumferential wall structure, the first part defining a radial sealing surface for a filter cartridge;
ii) a second part coupled to the first part, the second part having a second radial flange located on an exterior side of the main body end wall and having a second circumferential wall structure, the second part defining an air inlet or outlet opening;
iii) wherein the first and second circumferential wall structures are permanently joined together at a circumferential weld joint such that the main body end wall is between the first radial flange and the second radial flange and such that the outlet assembly is rotatable with respect to the main body; and
iv) wherein a third circumferential wall structure is provided on either of the first and second parts and is arranged such that the first, second, and third circumferential wall structures form a tongue and groove circumferential weld joint.