US 11,988,121 B2
Electric motor integrated rotating crankcase ventilation filter assemblies
Chirag D. Parikh, Madison, WI (US); and Ken Tofsland, Stoughton, WI (US)
Assigned to CUMMINS FILTRATION INC., Nashville, TN (US)
Appl. No. 17/795,057
Filed by CUMMINS FILTRATION INC., Nashville, TN (US)
PCT Filed Dec. 7, 2020, PCT No. PCT/US2020/063533
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/154392, PCT Pub. Date Aug. 5, 2021.
Claims priority of provisional application 62/966,688, filed on Jan. 28, 2020.
Prior Publication US 2023/0085051 A1, Mar. 16, 2023
Int. Cl. F01M 13/04 (2006.01); B01D 45/14 (2006.01)
CPC F01M 13/04 (2013.01) [B01D 45/14 (2013.01); B01D 2279/35 (2013.01); F01M 2013/0422 (2013.01); F01M 2013/0438 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A rotating crankcase ventilation filter element, comprising:
a motor comprising a stator and a rotor;
a shaft, a first end of the shaft configured to be coupled to the rotor and configured to rotate in response to rotation of the rotor;
a hub disposed circumferentially around the shaft, the hub comprising a hub inner flange coupled to and in contact with the shaft such that the hub is rotationally locked with respect to the shaft;
a filter media disposed around the hub and secured to the hub such that the filter media is rotationally locked with respect to the hub, the filter media structured for axial flow of a gas through the filter media;
a first end cap disposed on a filter media first end; and
a second end cap disposed on a filter media second end of the filter media opposite the filter media first end, the second end cap coupled to the first end cap such that the filter media and the hub is secured between the first end cap and the second end cap.