Patent ID: 8231783
Filing Date: 2012-07-31
Classification: B01D

Abstract:
1. An oil filter subassembly, comprising: a) a filter head; b) an orifice fitting attached to said filter head; c) a filter element including a cap attached to said orifice fitting; d) said orifice fitting including first and second radially disposed pins and a seal disposed above said pins; e) said cap including a central opening having a cylindrical wall, said wall including first and second L-shaped grooves having vertical and horizontal portions, said grooves being oppositely disposed from each other, said horizontal portion including an upper side wall extending upwardly away from said vertical groove portion to provide a cam surface; f) said cap being configured to compress said seal, thereby to provide a downward bias force on said cap; and g) said pins are configured to move downwardly within said vertical groove portions and positionable within the respective horizontal groove portions, said cam surface tending to push down on said respective pin from the bias force.