US 12,409,397 B2
Fluid filtration apparatuses, systems, and methods
Matthew P. Goertz, Bloomington, MN (US); Andrew J. Dallas, Lakeville, MN (US); Derek O. Jones, Andover, MN (US); and Yehya Elsayed, Dearborn, MI (US)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Appl. No. 16/637,344
Filed by DONALDSON COMPANY, INC., Minneapolis, MN (US)
PCT Filed Aug. 9, 2018, PCT No. PCT/US2018/045918
§ 371(c)(1), (2) Date Feb. 7, 2020,
PCT Pub. No. WO2019/032773, PCT Pub. Date Feb. 14, 2019.
Claims priority of provisional application 62/543,456, filed on Aug. 10, 2017.
Prior Publication US 2021/0354059 A1, Nov. 18, 2021
Int. Cl. B01D 25/26 (2006.01); B01D 29/46 (2006.01); B01D 39/16 (2006.01)
CPC B01D 25/26 (2013.01) [B01D 29/46 (2013.01); B01D 39/1607 (2013.01); B01D 2239/065 (2013.01); B01D 2239/1216 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter comprising:
a first flow face extending along a length and a width of the filter, wherein the first flow face comprises at least one contaminant retention layer first edge and at least one flow defining layer first edge;
a second flow face spaced in an axial direction from the first flow face, wherein the second flow face extends along the length and the width of the filter and comprises at least one contaminant retention layer second edge and at least one flow defining layer second edge;
at least one contaminant retention layer extending from the contaminant retention layer first edge to the contaminant retention layer second edge;
at least one flow defining layer adjacent to at least one of the contaminant retention layers, the at least one flow defining layer extending from the flow defining layer first edge to the flow defining layer second edge;
a depth extending from the first flow face to the second flow face;
first and second sides spaced from each other across the width of the filter and extending along the length and the depth of the filter;
first and second ends spaced from each other across the length of the filter and extending along the width and the depth of the filter;
wherein the at least one contaminant retention layer and the at least one flow defining layer are planar, non-fluted members arranged as a stack of layers, with planar surfaces of adjacent contaminant retention layers and flow defining layers in contact with each other;
wherein the stack of layers is compressed within a housing; and
wherein the filter is sealed along the first and second ends so that fluid may only flow axially through the filter in a single fluid flow path direction that extends axially from the first flow face to the second flow face.