US 12,168,188 B2
Quick oil change filter and assembly
Elizabeth Woytach, Wauwatosa, WI (US); Bryce Metcalf, Wauwatosa, WI (US); Randall Ammentorp, Wauwatosa, WI (US); Chris Martinek, Wauwatosa, WI (US); Rodney Balzar, Wauwatosa, WI (US); and Glen Stroik, Wauwatosa, WI (US)
Assigned to Briggs & Stratton, LLC, Wauwatosa, WI (US)
Filed by BRIGGS & STRATTON, LLC, Wauwatosa, WI (US)
Filed on Feb. 6, 2023, as Appl. No. 18/106,267.
Application 18/106,267 is a continuation of application No. 16/937,027, filed on Jul. 23, 2020, granted, now 11,571,640.
Claims priority of provisional application 62/878,285, filed on Jul. 24, 2019.
Prior Publication US 2023/0173412 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 27/08 (2006.01); B01D 27/10 (2006.01); B01D 27/14 (2006.01); B01D 35/18 (2006.01); B01D 35/30 (2006.01); F01M 5/00 (2006.01); F01M 11/03 (2006.01)
CPC B01D 27/08 (2013.01) [B01D 27/103 (2013.01); B01D 27/106 (2013.01); B01D 27/148 (2013.01); B01D 35/18 (2013.01); B01D 35/30 (2013.01); F01M 5/002 (2013.01); F01M 11/03 (2013.01); B01D 2201/295 (2013.01); B01D 2201/316 (2013.01); F01M 2011/036 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A filtration system, comprising:
a filter housing including a cavity and a base, wherein the base of the filter housing defines an inlet and an outlet in fluid communication with the inlet;
a drain defined in the base;
a channel defined in the base and in fluid communication with the drain, the channel defining an outer diameter; and
a filter cartridge defining a longitudinal axis and being movable between an installed position within the cavity of the filter housing and an uninstalled position outside the cavity of the filter housing, in the installed position, a first flow path that extends from the inlet into the filter cartridge and to the outlet, the filter cartridge comprising:
a bottom endplate defining an outer diameter that is greater than the outer diameter of the channel so that, in the installed position, the bottom endplate covers the channel and prevents fluid flow through the channel to the drain; and
a filter media extending axially outwardly from the bottom endplate.