公开(公告)号：WO2020009899A1

公开(公告)日：2020-01-09

申请号：PCT/US2019/039513

申请日：2019-06-27

Applicant: CUMMINS FILTRATION IP, INC.

Inventor： LOUISON, Matthew ,  SHENDE, Ketan Vishwanath ,  HERIOUX, Mark A. ,  HERMAN, Peter K. ,  POTRATZ, Daniel ,  PARIKH, Chirag D.

IPC: B01D46/00 ,  B01D35/143 ,  B01D46/24

Abstract: A filter element comprises a filter media and a restriction indicator device. The restriction indicator device comprises an attachment portion and a movable portion. The attachment portion is attachable to a portion of the filter assembly. The movable portion is movable relative to the attachment portion between a non-buckled position and a buckled position. The movable portion moves from the non-buckled position to the buckled position once a predetermined pressure drop between an upstream side and a downstream side of the movable portion of the restriction indicator device is met.