Granted Patent B1

US 7,335,300 · App. 10/890,367 · Granted Feb 26, 2008

Assignee: Wix Filtration Corp LLC

Abstract

Claims (36)

1. A fluid filter assembly comprising:

a filter housing having a central axis and defining a filter chamber;

a standpipe extending upwardly substantially coaxially to the central axis of said filter housing into said filter chamber;

said standpipe including an internal flow passage; and

a filter element removably positionable within said filter chamber of said filter housing, said filter element comprising:

a tubular filter media circumscribing the central axis;

a first end cap supporting said filter media at one end thereof;

a second end cap longitudinally spaced from said first end cap and supporting said filter media at the opposite end thereof; and

a center tube extending between said second end cap and said first end cap, said center tube disposed about said standpipe substantially coaxially with the central axis so as to define an exit compartment between said center tube and said standpipe;

said center tube having at least one inlet opening therethrough at a first end thereof adjacent to said first end cap for providing fluid communication between said filter chamber and said exit compartment;

said center tube further having a standpipe opening therethrough at a second end thereof adjacent to said second end cap and through which said standpipe being inserted longitudinally into said center tube;

said second end cap having at least one intake opening therethrough radially spaced from said standpipe opening in said center tube for providing fluid communication between said filter chamber and a volume inside said filter element between said filter media and said center tube.

2. The fluid filter assembly as defined in claim 1 , wherein said filter housing includes a cylindrical cup-shaped bowl having a closed end and an opposite open end and a cover removably attached to said open end of said bowl.

3. The fluid filter assembly as defined in claim 1 , wherein said standpipe is provided with a flow control valve for selectively controlling fluid flow through said standpipe.

4. The fluid filter assembly as defined in claim 3 , wherein said flow control valve is normally is a closed position preventing flow through said internal flow passage, said flow control valve is accessible from a distal end of said standpipe and movable into an open position allowing flow through said internal flow passage.

5. The fluid filter assembly as defined in claim 1 , wherein said filter housing is provided with an inlet port in fluid communication with said filter chamber and an outlet port in fluid communication with said internal flow passage of said standpipe.

6. The fluid filter assembly as defined in claim 1 , wherein said second end cap of said filter element sealingly engages an inner peripheral surface of said filter housing so as to separate said filter chamber of the filter housing into a contaminated fuel chamber and a clean fuel chamber.

7. The fluid filter assembly as defined in claim 6 , wherein said at least one inlet opening in said center tube provides fluid communication between said clean fuel chamber and said exit compartment, and said at least one intake opening in said second end cap provides fluid communication between said contaminated fuel chamber and said volume inside said filter element.

8. The fluid filter assembly as defined in claim 6 , wherein said filter housing is further provided with a return port in fluid communication with said clean fuel chamber.

9. A component of a filter element having filter media, comprising:

a center tube, wherein the center tube is defined by

a first end including

at least one fluid inlet opening, and

a second end including

a standpipe opening, and

at least one second opening that is radially spaced from said standpipe opening; and

a first end cap that radially extends from and is integrally formed with a cylindrical sidewall of the center tube, wherein the at least one second opening is formed in the first end cap, wherein the first end cap includes an axial flange portion, wherein the axial flange portion include a radial gasket-receiving groove.

10. The component of a filter element having filter media as defined in claim 9 , further comprising:

a second end cap, wherein the second end cap is removably-secured to the cylindrical sidewall of the center tube, wherein said center tube is substantially axially aligned with a central axis, wherein said center tube extends between said first and second end caps.

11. The component of a filter element having filter media as defined in claim 10 , wherein said at least one fluid inlet opening is formed in the center tube and proximate the second end cap, wherein the cylindrical sidewall of the center tube extends through an opening defined by the second end cap.

12. The component of a filter element having filter media as defined in claim 10 , further comprising:

a first seal disposed in said radial gasket-receiving groove;

a second seal that radially seals said first end of the center tube proximate the first end cap; and

a third seal that radially seals said second end of the center tube proximate the second end cap.

13. The component of a filter element having filter media as defined in claim 10 , wherein said second end cap includes at least one fluid intake opening, wherein the at least one fluid intake opening is radially spaced from said standpipe opening.

14. The component of a filter element having filter media as defined in claim 9 , wherein the first end of the center tube is further defined by an axial recess for receiving a projection extending from a cover member.

Assignments (11)