US 12,257,538 B2
Air filter precleaner
Gilbert Heck, Nuevo, CA (US); and Steve Williams, Cherry Valley, CA (US)
Assigned to K&N Engineering, Inc., Riverside, CA (US)
Filed by K&N Engineering, Inc., Riverside, CA (US)
Filed on Jul. 27, 2023, as Appl. No. 18/227,191.
Application 18/227,191 is a continuation of application No. 17/183,207, filed on Feb. 23, 2021, granted, now 11,724,226.
Claims priority of provisional application 62/980,946, filed on Feb. 24, 2020.
Prior Publication US 2023/0364543 A1, Nov. 16, 2023
Int. Cl. B01D 46/00 (2022.01); B01D 39/16 (2006.01); B01D 46/10 (2006.01)
CPC B01D 46/0005 (2013.01) [B01D 39/1676 (2013.01); B01D 46/0001 (2013.01); B01D 46/0012 (2013.01); B01D 46/10 (2013.01); B01D 2279/60 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air intake system for an engine, comprising:
an air filter box having an opening to an interior of the air filter box;
an air filter supported in the interior;
an air intake tube coupled with the air filter and extended to an air intake of the engine;
an air filter precleaner to be disposed over the opening;
a base for supporting the air filter precleaner over the opening; and
a grating for coupling the air filter precleaner and the base to the air filter box wherein the grating comprises a screen portion surrounded by a frame having corner portions configured to be fastened onto the air filter box wherein the frame comprises a perimeter shape that is substantially similar to the shape of a flat mating surface surrounding the opening, and wherein the frame includes a peripheral lip configured to extend over an exterior of the air filter precleaner and the base.