Liquid filter, assembly, system, and methods

Patent metadata

Field	Value
Publication number	US-9776116-B2
Application number	US-201514954194-A
Country	US
Kind code	B2
Filing date	Nov 30, 2015
Priority date	Apr 27, 2007
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A filter cartridge 38 includes a first endcap 41 defining a first open aperture and having at least first and second protrusions extending from a wall along the aperture and into the first open aperture. The first protrusion is spaced from the second protrusion in both a vertical direction and a circumferential direction. The filter cartridge also includes filter media 44 and a second endcap 42 . The filter cartridge is mountable in a filter bowl 36 having an inner liner assembly, and the bowl and the inner liner assembly is connectable to a filter head to form a filter system. The filter system can have any one or combination of the following features: a filter lock-out mechanism to ensure that the filter head and the filter bowl are not connectable unless there is a proper filter cartridge installed therein; an automatic drain mechanism to drain the filter bowl of liquid before the filter cartridge is removed from the bowl; and a cartridge retention mechanism, to ensure that the filter cartridge remains with the filter bowl after the filter bowl has been removed from the filter head. Adaptor rings can be utilized in order to test other types of filter elements in the system, when those other types of filter elements do not have the protrusion arrangement. Assemblies, methods of servicing, methods of installing, methods of use, and methods of retaining can be practiced.

First claim

We claim:

1. A filter cartridge for use in a filter bowl; the filter cartridge comprising:
(a) a first end cap defining a first open aperture;
(i) the first end cap holding a first end cap seal member;
(ii) the first end cap defining an aperture wall lining the first open aperture;
(iii) at least first and second protrusions extending radially into the first open aperture; the at least first and second protrusions engaging a lock-out mechanism in a filter bowl, when the filter cartridge is operably installed in the filter bowl;
(A) the first protrusion being spaced from the second protrusion in an axial direction;
(B) the first protrusion being circumferentially spaced from the second protrusion;

(iv) the first end cap defines an axially extending neck defining an outer radial surface;
(A) the first end cap seal member is held by the axially extending neck on the outer radial surface;

(v) the first end cap includes an axially projecting centering arrangement projecting from an outward axial surface thereof adjacent to an outer rim of the first end cap, the projecting arrangement including a plurality of standoffs taller than the neck;

(b) a tubular construction of filter media defining an open filter interior and having first and second opposite ends; the first end being secured to the first end cap;
(i) the first open aperture being in communication with the open filter interior; and

(c) a second end cap secured to the second end of the filter media; the second end cap defining a second open aperture in communication with the open filter interior;
(i) the second end cap holding a second end cap seal member.

2. A filter cartridge according to claim 1 further including:
(a) a retention mechanism centered within the first open aperture and extending from the first end cap; the retention mechanism having a gripper arrangement and a release arrangement.

3. A filter cartridge according to claim 2 wherein:
(a) the gripper arrangement includes a pair of opposing fingers radially extending toward each other; and
(b) the release arrangement includes a pair of opposing tabs, each tab being located about 90° relative to the fingers.

4. A filter cartridge according to claim 1 wherein:
(a) the first open aperture of the first end cap defines an inner diameter;
(b) the first protrusion extends into the first open aperture no greater than 40% of the inner diameter of the first open aperture; and
(c) the second protrusion extends in the first open aperture no greater than 40% of the inner diameter of the first open aperture.

5. A filter cartridge according to claim 1 wherein:
(a) the first protrusion and second protrusion are located circumferentially spaced within 50° of each other.

6. A filter cartridge according to claim 1 wherein:
(a) the first protrusion and the second protrusion are located greater than 45° of each other.

7. A filter cartridge according to claim 1 wherein:
(a) the first open aperture of the first end cap defines an inner diameter;
(b) the vertical distance between the first and second protrusions is 2-30% of the inner diameter.

8. A filter cartridge according to claim 1 further comprising:
(a) at least a third protrusion extending radially into the first open aperture;
(i) the third protrusion being circumferentially spaced from the first protrusion and the second protrusion;
(ii) the third protrusion being vertically spaced from only one of either the first protrusion or the second protrusion.

9. A filter cartridge according to claim 8 further comprising:
(a) at least a fourth protrusion extending radially into the first open aperture;
(i) the fourth protrusion being circumferentially spaced from the first, second, and third protrusions; and
(ii) the fourth protrusion being vertically spaced from only two of the first protrusion, the second protrusion, or the third protrusion.

10. A filter cartridge according to claim 9 wherein:
(a) two of the first, second, third, and fourth protrusions are circumferentially spaced within 45° of each other; and a remaining two of the first, second, third, and fourth protrusions are circumferentially spaced within 45° of each other.

11. A filter cartridge according to claim 1 wherein:
(a) an inner radial surface of the neck forms a portion of the aperture wall; and
(i) only one of the first and second protrusions extends from the inner radial surface of the neck.

12. A filter cartridge according to claim 11 wherein:
(a) the first end cap defines a filter media holding section having an inner media wall; the inner media wall defining an inner radial surface which forms part of the aperture wall;
(i) the inner radial surface of the inner media wall being spaced radially inwardly relative to the neck inner radial surface;
(ii) only one of the first and second protrusions extends from the inner radial surface of the inner media wall.

13. A filter cartridge according to claim 1 wherein:
(a) the second end cap defines a second axially extending neck defining a radial surface;
(i) the second end cap seal member is held by the second axially extending neck on the radial surface.

14. A filter cartridge according to claim 1 wherein:
(a) the filter media is pleated media.

15. A filter cartridge according to claim 1 wherein:
(a) the first end cap aperture wall has an end rim adjacent and against the filter media in the open filter interior;
(i) each of the first and second protrusions being spaced from the end rim so that the end rim is protrusion-free.

Assignees

• Donaldson Co Inc

Inventors

• Honermann Bradley S
• Legault Kathryn A
• Hacker John R
• Emery Mark S

Classifications

• B01D2201/291

  End caps · CPC title

• B01D29/232 Primary

  with corrugated, folded or wound sheets · CPC title

• B01D35/306 Primary

  Filter mounting adapter · CPC title

• B01D35/153

  Anti-leakage or anti-return valves · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title