US 12,370,469 B2
Perforated layer coalescer
Mark T. Wieczorek, Cookeville, TN (US); Joshua Ryan Hendrixson, Smithville, TN (US); and Barry Mark Verdegan, Stoughton, WI (US)
Assigned to Cummins Filtration IP, Inc., Columbus, IN (US)
Filed by Cummins Filtration IP, Inc., Columbus, IN (US)
Filed on Jan. 26, 2024, as Appl. No. 18/424,502.
Application 18/424,502 is a continuation of application No. 17/587,273, filed on Jan. 28, 2022, granted, now 11,911,714.
Application 17/587,273 is a continuation of application No. 16/318,488, granted, now 11,247,143, previously published as PCT/US2017/042832, filed on Jul. 19, 2017.
Claims priority of provisional application 62/364,179, filed on Jul. 19, 2016.
Prior Publication US 2024/0173650 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 17/02 (2006.01); B01D 17/04 (2006.01); B01D 29/21 (2006.01); B01D 29/58 (2006.01); B01D 35/30 (2006.01); B01D 36/00 (2006.01); B01D 39/20 (2006.01); B01D 17/00 (2006.01)
CPC B01D 17/045 (2013.01) [B01D 17/02 (2013.01); B01D 17/04 (2013.01); B01D 35/30 (2013.01); B01D 17/08 (2013.01); B01D 29/21 (2013.01); B01D 29/58 (2013.01); B01D 36/003 (2013.01); B01D 39/2017 (2013.01); B01D 2201/291 (2013.01); B01D 2201/32 (2013.01); B01D 2257/702 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A filter element comprising:
a top endplate;
a bottom endplate;
a first filter media positioned between the top endplate and the bottom endplate, the first filter media being pleated;
a second filter media positioned between the top endplate and the bottom endplate, the second filter media being non-perforated and non-pleated; and
a third filter media positioned between the top endplate and the bottom endplate, the third filter media being non-pleated and comprising:
a plurality of pores, and
a perforation positioned proximate an edge of the third filter media, the perforation being larger than each of the pores, the perforation formed as a hole in the third filter media;
wherein the second filter media is positioned between the first filter media and the third filter media.