US 11,988,120 B2
Blow-by gas filtration assembly with threaded filter portion
Giorgio Girondi, Mantova (IT)
Assigned to UFI FILTERS S.P.A., Mantova (IT)
Appl. No. 17/632,637
Filed by UFI FILTERS S.P.A., Mantova (IT)
PCT Filed Jul. 29, 2020, PCT No. PCT/IB2020/057157
§ 371(c)(1), (2) Date Feb. 3, 2022,
PCT Pub. No. WO2021/024104, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 102019000014259 (IT), filed on Aug. 7, 2019.
Prior Publication US 2022/0290590 A1, Sep. 15, 2022
Int. Cl. F02B 25/06 (2006.01); B01D 46/00 (2022.01); B01D 46/24 (2006.01); B01D 46/26 (2006.01); F01M 13/04 (2006.01)
CPC F01M 13/04 (2013.01) [B01D 46/0056 (2013.01); B01D 46/2411 (2013.01); B01D 46/26 (2013.01); F01M 2013/0422 (2013.01); F01M 2013/0438 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A blow-by gas filtration assembly which is fluidically connectable to a crankcase ventilation circuit of an internal combustion engine to receive blow-by gases and filter from suspended particles contained in the blow-by gases, wherein the blow-by gas filtration assembly has an axis and comprises:
a filter group which extends along the axis, having a hollow cylindrical shape with a central cavity which is traversable by blow-by gases radially;
a support and control member engageable to the filter group for supporting the filter group in an axial position along the axis and for controlling the filter group in rotation around said axis to perform filtration operations;
wherein the support and control member and the filter group comprise, respectively, a threaded member portion and a threaded filter portion engageable by reciprocal screwing around the axis;
wherein the support and control member and the filter group comprise, respectively, a member abutment and a filter abutment, wherein axial engagement between the member abutment and the filter abutment prevents further screwing of the threaded member portion to a threaded filter portion; and
wherein the threaded member portion and the threaded filter portion are reciprocally engageable in screwing around the axis and in a rotary direction opposite to the direction of rotation around which the filter group is controlled in rotation in the filtration operations.