Patent ID: 6652614
Filing Date: 2003-11-25
Classification: B01D

Abstract:
An air cleaner comprising:(a) a housing having an outer wall, an open end for insertion and removal of a filter element and an air flow outlet tube; (b) a filter element positioned within the housing and comprising: (i) a media pack having first and second, opposite, ends; said media pack defining a central, open, volume; (ii) a first end ca at said first end of said media pack; said first end cap having a central aperture in flow communication with said central, open, volume; (iii) a closed second end cap at said second end of said media pack; (A) said second end cap comprising a composite structure including: (1) a pre-form defining a recess projecting into said central open volume from said second end of said media pack; said pre-form having: (i) a circular wall surrounded by said media pack second end; and (ii) a recessed central base; and (2) an annular, molded, ring portion to which said media pack and said pre-form are secured; (i) said annular, molded, ring portion defining a portion of an outer end surface of the second closed end cap; and (ii) said second, closed, end cap resulting from: positioning said media pack second end around the circular wall of the pre-form; and then potting the resulting combination of pre-form and media pack into moldable polymer such that a portion of the moldable polymer, upon molding, defines a portion of an outer surface of the second closed end cap; and (c) an air cleaner access cover removably positioned over the housing open end; (i) the air cleaner access cover having an inner side including a central projection the eon; said central projection extending into the recess of the pre-form; (ii) said central projection defining a hollow recessed interior.