Patent ID: 6881334
Filing Date: 2005-04-19
Classification: B01D

Abstract:
1. A filter assembly comprising: a filter cartridge comprising: a base for mounting said filter cartridge to filter a flow of fluid delivered to and retrieved from said filter cartridge through said base, said base comprising: a second end including an inwardly projecting annular shoulder engagable against the radially projecting roll seam of the filter cartridge, wherein said cartridge housing end cap is axially received in said receptacle with radial interference between the inside surface of the receptacle wall and the side wall of the end cap, and said collar is axially installed over said cartridge second section bringing said shoulder to bear axially against said roll seam and said collar is rotated relative to said base and cartridge whereby said second engagement structures mate with said first engagement structures to releasably axially retain the cartridge to the base in a substantially fixed axial and rotational relationship.