A filter element is removably positionable within a filter housing defining a filter chamber for said filter element. The filter housing comprises a standpipe extending within the filter chamber. The filter element includes a tubular filter media circumscribing the standpipe, a first end cap support
A filter element is removably positionable within a filter housing defining a filter chamber for said filter element. The filter housing comprises a standpipe extending within the filter chamber. The filter element includes a tubular filter media circumscribing the standpipe, a first end cap supporting the filter media at one end thereof, a second end cap longitudinally spaced from the first end cap and supporting the filter media at the opposite end thereof, and a center tube extending between the first and second end caps. The center tube has at least one inlet opening therethrough at a first end thereof adjacent to the first end cap and a standpipe opening therethrough at a second end thereof adjacent to the second end cap. The second end cap has at least one intake opening therethrough radially spaced from the standpipe opening in the center tube.
대표청구항▼
1. A method for forming a filter element, comprising the steps of: forming filter media to include a first axial end and a second axial end;forming a first end cap to include an inner support surface and an opening;disposing the inner support surface of the first end cap substantially adjacent the f
1. A method for forming a filter element, comprising the steps of: forming filter media to include a first axial end and a second axial end;forming a first end cap to include an inner support surface and an opening;disposing the inner support surface of the first end cap substantially adjacent the first axial end of the filter media; andforming a second end cap to include an inner support surface and a center tube extending axially away from the inner support surface of the second end cap and axially through the opening formed by the first end cap, wherein said center tube includes a first axial end defining at least one fluid inlet opening, and a second axial end defining a standpipe opening;disposing the inner support surface of the second end can substantially adjacent the second axial end of the filter media; andproviding an actuator pin that is connected to and extends axially away from an inner surface of the first axial end of the center tube and toward the second axial end of the center tube, wherein an outer axial surface of said first axial end of the center tube is provided with an axial recess that projects axially into the actuator pin, wherein the at least one fluid inlet opening is radially offset from said axial recess. 2. The method according to claim 1, further comprising the steps of disposing a first annular seal around a circumference of the opening in the first end cap and against a radial portion of the center tube; andconnecting a second annular seal to the standpipe opening of the center tube. 3. The method according to claim 2 further comprising the steps of forming the center tube to include an outer circumferential surface and an inner circumferential surface, wherein the inner circumferential surface of the center tube defines the standpipe opening, andaxially inserting a standpipe into the standpipe opening such that an inner surface of the second annular seal radially and sealingly engages an outer surface of the standpipe. 4. The method according to claim 3 further comprising the step of arranging an inner surface of the first annular seal radially to sealingly engage the outer circumferential surface of the center tube. 5. The method according to claim 1 further comprising the step of forming said second end cap to include a flange that extends axially around an outer periphery and circumscribes the filter media. 6. The method according to in claim 5 further comprising the step of forming the second end cap to include first and second flanges extending radially away from the outer surface of the axial flange portion, and wherein the first and second flanges are axially offset from one another to define a circumferential groove therebetween. 7. The method according to claim 6 further comprising the step of disposing an annular seal within said circumferential groove for radially and sealingly engaging an inner peripheral surface of a filter housing when the filter element is disposed within the filter housing. 8. The method according to claim 1 further comprising the step of forming the actuator pin to include an axial distal end that extends toward the second axial end of the center tube for permitting the actuator pin to enter an actuator opening of a standpipe for subsequent axial engagement of a closure element of a flow control valve arranged within the standpipe. 9. The method according to claim 1 further comprising the step of receiving a projection extending from a cover member within the axial recess for indirectly engaging a closure element of a flow control valve arranged within a standpipe by way of the actuator pin axially engaging the closure element. 10. A method of forming a component of a filter element having filter media, comprising: providing a center tube including a first end, a second end, an outer surface and an inner surface, the inner surface forming an axial passage between the first end and the second end, wherein the center tube further includes a first end wall at the first end of the center tube and an actuator pin centrally located on the first end wall and extending axially therefrom towards the second end of the center tube, the end wall further defining at least one opening extending therethrough, wherein each of said at least one openings being radially offset from the actuator pin, wherein the outer surface of the first end wall defines a recess that extends axially into the actuator pin, wherein the second end of the center tube defines a standpipe opening in fluid communication with the passage; andintegrally forming a first end cap with the center tube, wherein the first end cap is arranged in supporting relation with an end of the filter media. 11. The method according to claim 10 further comprising the step of forming the first end cap to include at least one intake opening extending axially through the first end cap. 12. The method according to claim 10 further comprising the step of forming said first end cap to include a flange portion that extends axially from an upper surface of the first end cap and toward the first end wall of the center tube, wherein the flange portion includes an outer surface, and further wherein said first end cap is formed to include first and second flanges radially extending away from the outer radial surface of the flange portion. 13. The method according to claim 12 further comprising the step of forming the first and second radial flange portions to be axially offset to form a groove therebetween. 14. The method according to claim 13 further comprising the step of disposing an annular seal within said groove. 15. The method according to claim 10 further comprising the step of removably-securing a second end cap to the outer surface of the center tube proximate the first end of the center tube, wherein the second end cap is formed to include a circumferential inner surface defining an opening. 16. The method according to claim 15 further comprising the step of connecting an annular seal to the inner surface of the second end cap and disposing the annular seal adjacent the outer surface of the center tube for indirectly connecting the second end cap to the center tube. 17. The method according to claim 10 further comprising the step of connecting an annular seal to the inner surface of the center tube at the standpipe opening. 18. A method for assembling a fluid filter assembly comprising the steps of: providing a filter housing having a central axis and defining a filter chamber;extending a standpipe upwardly substantially coaxially to the central axis of said filter housing into said filter chamber, said standpipe including an internal flow passage; andremovably-positioning a filter element within said filter chamber of said filter housing, said filter element being formed to include 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; anda 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. 19. The method of claim 18 further comprising the step of forming said filter housing to include a cylindrical cup-shaped bowl having a closed end, an opposite open end and a cover removably attached to said open end of said bowl. 20. The method of claim 18 further comprising the step of limning said standpipe to include a flow control valve for selectively controlling fluid flow through said standpipe. 21. The method of claim 20 further comprising the step of arranging said flow control valve to be in a normally closed position to prevent fluid flow through said internal flow passage, wherein said flow control valve is formed to be accessible from a distal end of said standpipe to permit the flow control valve to be re-orientated from said normally closed position and to an open position for allowing fluid flow through said internal flow passage. 22. The method of claim 18 further comprising the step of forming said filter housing to include 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. 23. The method of claim 18 further comprising the step of arranging said second end cap of said filter element to sealingly engage 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. 24. The method of claim 23 further comprising the step of arranging said at least one inlet opening in said center tube to provide 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. 25. The method of claim 23 further comprising the step of forming the filter housing to include a return port in fluid communication with said clean fuel chamber. 26. A method of forming a component of a filter element having filter media, comprising the steps of: forming a center tube that includes a first end having at least one fluid inlet opening and a second end having a standpipe opening and at least one second opening that is radially spaced from said standpipe opening; andintegrally-forming a first end cap with a cylindrical sidewall of the center tube, wherein the first end cap radially extends from the 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 is formed to include an axial flange portion, wherein the axial flange portion forms a radial gasket-receiving groove. 27. The method of claim 26, further comprising the step of removably-securing a second end cap 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. 28. The method of claim 27 further comprising the step of forming said at least one fluid inlet opening 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. 29. The method of claim 27 further comprising the steps of disposing a first seal in said radial gasket-receiving groove;providing a second seal that radially seals said first end of the center tube proximate the first end cap; andproviding a third seal that radially seals said second end of the center tube proximate the second end cap. 30. The method of claim 27 further comprising the step of forming said second end cap to include at least one fluid intake opening, wherein the at least one fluid intake opening is radially spaced from said standpipe opening. 31. The method of claim 26 further comprising the step of forming the first end of the center tube to include an axial recess for receiving a projection extending from a cover member.
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