Patent ID: 6627078
Filing Date: 2003-09-30
Classification: B01D

Abstract:
A filter comprising a housing extending axially along an axis between distally opposite first and second ends, a cover removably mounted to said housing and closing said first end, an annular filter element extending axially in said housing between distally opposite first and second ends respectively at said first and second ends of said housing, an end cap at said first end of said filter element and releasably engaged and gripped by said cover including upon removal of said cover from said housing, said cover having a plurality of cantilever legs extending axially into said housing to an inner axial reach beyond said first end of said filter element and gripping said end cap, wherein said filter element has a hollow interior, said end cap has a central concave section extending into said hollow interior, said legs extend into said concave section, said end cap spans and closes said hollow interior and is engaged by said legs in said concave section in detent relation, said end cap has a central mushroom-shaped boss extending from said concave section axially toward said cover,and wherein said end cap has a first section comprising an outer annulus at said first end of said filter element and extending laterally relative to said axis, a second section comprising a cylindrical sidewall extending axially into said hollow interior from said first section, a third section extending laterally inwardly from said second section, and a fourth section comprising said central mushroom-shaped boss extending axially from said third section toward said cover to a head, said second section having a first axial height along said cylindrical sidewall between said first section and said third section, said fourth section having a second axial height along said mushroom-shaped boss between said third section and said head, wherein said second axial height is less than said first axial height, such that an inner lateral surface of said cover can contact said outer annulus of said end cap.