US 12,280,328 B2
Air oil separator
Wijadi Jodi, Burnsville, MN (US); Timothy O. Winters, Nowthen, MN (US); Scott R. Galloway, Chanhassen, MN (US); Marvin E. Laue, Belle Plaine, MN (US); and Hubert J. Visee, Eden Prairie, MN (US)
Assigned to Donaldson Company, Inc., Minneapolis, MN (US)
Appl. No. 17/613,438
Filed by Donaldson Company, Inc., Minneapolis, MN (US)
PCT Filed May 18, 2020, PCT No. PCT/US2020/033440
§ 371(c)(1), (2) Date Nov. 22, 2021,
PCT Pub. No. WO2020/236737, PCT Pub. Date Nov. 26, 2020.
Prior Publication US 2022/0305421 A1, Sep. 29, 2022
Int. Cl. B01D 46/24 (2006.01); B01D 46/00 (2022.01)
CPC B01D 46/2414 (2013.01) [B01D 46/0031 (2013.01); B01D 2265/021 (2013.01); B01D 2265/026 (2013.01); B01D 2271/027 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A filter element for an air oil separator; the filter element comprising:
(a) a tubular construction of filter media having opposite first and second ends and a longitudinal axis;
(b) a first end cap construction secured to the first end of the filter media; the first end cap construction including a flange-receiving recess therein; the first end cap construction including an axial plate and an annular sleeve extending perpendicular from the plate in a direction toward the filter media; the annular sleeve having an outer radial ring and an inner radial ring; the filter media being between the outer radial ring and the inner radial ring; and
(i) the outer radial ring defining the recess; the recess being a groove within the outer radial ring; the groove extending continuously from the axial plate to a free end of the outer radial ring in a direction parallel to the longitudinal axis.