Fuel filter cartridge with keyed profile

Patent metadata

Field	Value
Publication number	US-11420141-B2
Application number	US-201816634630-A
Country	US
Kind code	B2
Filing date	Aug 16, 2018
Priority date	Aug 18, 2017
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A filtration system comprises a filter head assembly comprising an outlet slot, valve element, and latch element. The valve element is in fluid communication with the outlet slot and includes an open position and a closed position. In the open position fluid flow travels through the outlet slot. In the closed position fluid flow is prevented through the outlet slot. The latch element is configured to lock the valve element in the closed position. The filtration further comprises a filter cartridge structured to engage the filter head assembly. The filter cartridge comprises a first and second filter end. The filter cartridge comprises filter media and a keyed element disposed on the first filter end. The keyed element is structured for engagement of the latch element, wherein the engagement unlocks the valve element causing the valve element to be in the open position.

First claim

What is claimed is:

1. A filtration system, comprising:
a filter head assembly comprising:
an outlet slot;
a valve element in fluid communication with the outlet slot, the valve element defining an open position and a closed position, wherein in the open position, fluid flow travels through the outlet slot, and wherein in the closed position, fluid flow is prevented through the outlet slot, the valve element comprising a plurality of slots; and
a latch element configured to lock the valve element in the closed position; and

a filter cartridge structured to engage the filter head assembly, the filter cartridge having a first filter end and a second filter end, the filter cartridge comprising:
filter media; and
a keyed element disposed on the first filter end, the keyed element structured for engagement of the latch element, the keyed element comprising an annular base portion on a first end of the keyed element and an annular wall extending axially from the annular base portion toward a second end of the keyed element, an annular edge formed around an internal surface of the annular wall and protruding inward and configured to protrude into one or more of the plurality of slots when the filter cartridge is engaged with the filter head assembly, the annular edge adjacent to the second end of the keyed element, and the annular edge configured to engage the latch element and unlock the valve element, causing the valve element to be in the open position.

2. The filtration system of claim 1 , wherein the keyed element comprises a first keyed opening defined on the annular base portion and having a first diameter, and a second keyed opening defined on the second end of the keyed element and having a second diameter.

3. The filtration system of claim 2 , wherein the keyed element further comprises a sealing edge formed around a lip of the first keyed opening, the sealing edge configured to sealingly engage the filter head assembly such that fluid flow is directed through the outlet slot when the valve element is in the open position.

4. The filtration system of claim 2 , wherein the annular edge is an annular bead edge configured to engage the latch element and unlock the valve element.

5. The filtration system of claim 4 wherein the latch element comprises a first latch end, a second latch end, and an annular latch sleeve extending from the first latch end toward the second latch end, wherein the annular bead edge is configured to press up against the annular latch sleeve and unlock the valve element.

6. The filtration system of claim 4 , wherein the annular bead edge is configured to bulge into a portion of the valve element to engage a portion of the latch element.

7. The filtration system of claim 1 , wherein the first filter end comprises a filter end internal surface and an external surface, the filter end internal surface in contact with the filter media, wherein the keyed element is disposed on the external surface.

8. The filtration system of claim 1 , wherein the filter head assembly further comprises a spring, the spring configured to engage the latch element and bias the latch element axially upward toward the valve element such that the valve element is biased in the closed position.

9. The filtration system of claim 1 , wherein the filter head assembly further comprises a standpipe, the outlet slot disposed on the standpipe, the standpipe comprising an internal passage in fluid communication with the outlet slot, and the standpipe configured to pass through an opening defined in the valve element and an opening defined in the latch element.

10. The filtration system of claim 9 , wherein the standpipe comprises a shoulder disposed on a first standpipe end, the shoulder configured to engage a valve end of the valve element and prevent axial movement of the valve element along the standpipe.

11. The filtration system of claim 10 , wherein the valve element comprises a first valve end, a second valve end, and an annular valve sleeve extending from the first valve end axially away from the second valve end, wherein in the closed position, the valve element is disposed along the standpipe such that the annular valve sleeve covers the outlet slot, and wherein in the open position the valve element is disposed along the standpipe such that the annular valve sleeve does not cover the outlet slot.

12. The filtration system of claim 11 , wherein the valve element comprises a rib disposed on the first valve end of the valve element, the rib projecting radially outward from the opening in the valve element toward a perimeter of the first valve end, wherein the rib is configured to engage a portion of the keyed element.

13. The filtration system of claim 1 , wherein the valve element comprises a first valve end, a second valve end, and a plurality of tabs disposed between the first valve end and the second valve end, each tab in the plurality of tabs extending radially outward and comprising a first tab end in a common plane with the first valve end and a second tab end in a common plane with the second valve end.

14. The filtration system of claim 1 , wherein the latch element comprises a first latch end, a second latch end, an annular latch sleeve extending from the first latch end toward the second latch end, and a plurality of fingers, the annular latch sleeve defining a central opening therethrough, each finger in the plurality of fingers comprising a first finger end, a second finger end, and a finger body extending from the first finger end to the second finger end, the second finger end connected to the second latch end, the finger body extending radially inward toward the central opening and upward toward the first latch end toward the first finger end.

15. The filtration system of claim 14 , wherein the filter head assembly further comprises a standpipe disposed in the central opening such that the plurality of fingers surround the standpipe, the standpipe comprising an annular groove, wherein each finger in the plurality of fingers comprises a distal end on the first finger end, the distal end configured to engage the annular groove of the standpipe when the latch element locks the valve element in the closed position.

Assignees

• Cummins Filtration Ip Inc

Inventors

• Chavan Priti Vishwas
• Menon Anand Vijayan
• Bowerman Jeff A
• Roysdon Eric
• Bright Aarol Duane
• Sawant Anil Ishwar

Classifications

• B01D2201/4053

  using keys · CPC title

• F02M37/34

  by the filter structure, e.g. honeycomb, mesh or fibrous · CPC title

• B01D35/306

  Filter mounting adapter · CPC title

• B01D29/15

  arranged for inward flow filtration · CPC title

• B01D46/0004

  Details of removable closures, lids, caps or filter heads · CPC title