US 11,673,086 B2
Air cleaner assembly with restriction indicator
Michael J. Lockert, Cedar Falls, IA (US); Douglas J. Nagel, Stout, IA (US); Richard P. Manahan, Lake Elmo, MN (US); Mark J. Gailloux, Eden Prairie, MN (US); and Steven K. Campbell, Lakeville, MN (US)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Appl. No. 16/758,722
Filed by Donaldson Company, Inc., Minneapolis, MN (US)
PCT Filed Oct. 24, 2018, PCT No. PCT/US2018/057336
§ 371(c)(1), (2) Date Apr. 23, 2020,
PCT Pub. No. WO2019/084154, PCT Pub. Date May 2, 2019.
Claims priority of provisional application 62/576,263, filed on Oct. 24, 2017.
Prior Publication US 2020/0360849 A1, Nov. 19, 2020
Int. Cl. B01D 46/00 (2022.01); F02M 35/09 (2006.01)
CPC B01D 46/0086 (2013.01) [B01D 46/0004 (2013.01); F02M 35/09 (2013.01); B01D 2265/028 (2013.01); B01D 2279/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An air cleaner assembly comprising:
a housing comprising an exterior surface around an interior volume, the housing comprising:
a bore extending through a portion of the exterior surface of the housing along an insertion axis and surrounded by a bore wall protruding from the portion of the exterior surface along the insertion axis; and
a receptacle wall around the bore wall along the insertion axis and radially spaced from the bore wall to form a channel between the bore wall and the receptacle wall; and
a restriction indicator configured to measure a restriction in the interior volume when coupled to the housing and to display an indication of the restriction, the restriction indicator comprising:
an indication element configured to display the indication of the restriction;
a stem at least partially insertable into the bore along the insertion axis and configured to engage an inner surface of the bore wall when disposed therein; and
one or more tabs at least partially insertable in the channel between the bore wall and the receptacle wall and configured to facilitate removably coupling the restriction indicator to the housing,
wherein each tab is deflectable to couple or uncouple to the receptacle wall.