US 11,673,082 B2
Liquid filter arrangements and methods
Enrico Greco, Villa Poma (IT); Fabrizo Buratto, Sustinente (IT); Mauro Cantoni, Mantova (IT); John Connelly, Chanhassen, MN (US); and John Hacker, Minneapolis, MN (US)
Assigned to Donaldson Company, Inc., Minneapolis, MN (US)
Filed by Donaldson Company, Inc., Minneapolis, MN (US)
Filed on Apr. 16, 2020, as Appl. No. 16/850,638.
Application 16/850,638 is a continuation of application No. 14/839,129, filed on Aug. 28, 2015, granted, now 10,646,803.
Application 14/839,129 is a continuation of application No. 13/892,512, filed on May 13, 2013, granted, now 9,120,041, issued on Sep. 1, 2015.
Application 13/892,512 is a continuation of application No. 13/153,887, filed on Jun. 6, 2011, granted, now 8,440,079, issued on May 14, 2013.
Application 13/153,887 is a continuation of application No. 12/655,133, filed on Dec. 22, 2009, granted, now 7,955,502, issued on Jun. 7, 2011.
Application 12/655,133 is a continuation of application No. 11/630,705, granted, now 7,662,284, issued on Feb. 16, 2010, previously published as PCT/US2005/021273, filed on Jun. 16, 2005.
Claims priority of provisional application 60/659,592, filed on Mar. 7, 2005.
Claims priority of provisional application 60/609,602, filed on Sep. 13, 2004.
Claims priority of provisional application 60/583,873, filed on Jun. 29, 2004.
Prior Publication US 2020/0238205 A1, Jul. 30, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 29/15 (2006.01); B01D 35/153 (2006.01); B01D 35/157 (2006.01); B01D 35/143 (2006.01)
CPC B01D 35/153 (2013.01) [B01D 29/15 (2013.01); B01D 35/143 (2013.01); B01D 35/1573 (2013.01); B01D 2201/167 (2013.01); B01D 2201/291 (2013.01); B01D 2201/295 (2013.01); B01D 2201/302 (2013.01); B01D 2201/4046 (2013.01); B01D 2201/4076 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A filter cartridge being selectively removably mounted within a filter bowl; the filter cartridge comprising:
(a) a filter media construction defining a central axis and having a central open volume and first and second ends;
(b) a first end cap on the first end of filter media construction;
(i) the first end cap having a periphery and a plurality of radial projections thereon; the radial projections being at a radially outermost portion of the periphery of the first end cap;
(ii) the radial projections being centering structure positioned to center the filter cartridge within the filter bowl;
(c) the first end cap having an axial stem; the axial stem having a central conduit therethrough, in communication with the central open volume of the filter media construction;
(i) the axial stem including a portion projecting away from the filter media construction;
(ii) the axial stem including an outer seal member thereon;
(iii) an end of the axial stem remote from the filter media construction comprising a plurality of circumferentially spaced axial projections, each axial projection having a free end that is narrower at the free end than at a region closer to the filter media construction; and
(iv) a depression between each of the axial projections; and
(d) a second end cap secured to the second end of the filter media construction.