US 11,857,901 B2
Expansion membrane assembly and filter head in exhaust fluid filter assembly
Bharath Siddaramanna Onkarappa, Shimoga (IN); Mrinmayee Balasaheb Pokharkar, Pune (IN); Nilesh Bhaskar Nagare, Pune (IN); Nilay Shah, Pune (IN); Christopher E. Holm, Madison, WI (US); Frank Wolfgang Becker, Friendship, WI (US); and Santoshini Choudhary, Bengaluru (IN)
Assigned to CUMMINS FILTRATION IP, INC., Columbus, IN (US)
Filed by CUMMINS FILTRATION IP, INC., Columbus, IN (US)
Filed on Dec. 28, 2021, as Appl. No. 17/563,552.
Application 17/563,552 is a continuation of application No. PCT/US2020/040222, filed on Jun. 30, 2020.
Claims priority of provisional application 62/869,232, filed on Jul. 1, 2019.
Prior Publication US 2022/0118385 A1, Apr. 21, 2022
Int. Cl. B01D 35/30 (2006.01); B01D 29/00 (2006.01); B01D 29/15 (2006.01)
CPC B01D 35/30 (2013.01) [B01D 29/0093 (2013.01); B01D 29/15 (2013.01); B01D 2201/304 (2013.01); B01D 2201/4053 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A filter assembly comprising:
a housing comprising a housing inner surface, a housing outwardly facing peripheral surface substantially radially opposite the housing inner surface, and a housing top surface extending between the housing inner surface and the housing outwardly facing peripheral surface, the housing outwardly facing peripheral surface being an outermost exterior surface of the housing;
a filter element for filtering a fluid and positioned within the housing; and
an expansion membrane assembly that fluidly separates and is positioned between the housing and the filter element, the expansion membrane assembly extending along the housing inner surface, the housing top surface, and the housing outwardly facing peripheral surface of the housing, the expansion membrane assembly outwardly expandable within the housing towards the housing inner surface and a gap is defined between a portion of an outer surface of the expansion membrane assembly and a portion of the housing inner surface with the filter element radially spaced apart from an inner surface of the expansion membrane assembly.