Liquid filter arrangement and methods

Patent metadata

Field	Value
Publication number	US-10646803-B2
Application number	US-201514839129-A
Country	US
Kind code	B2
Filing date	Aug 28, 2015
Priority date	Jun 29, 2004
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A liquid filter arrangement is provided, as well as methods of assembly and use. Advantageous features, relating to a preferred filter cartridge and a preferred slide arrangement, are provided.

First claim

What is claimed:

1. A filter cartridge for use as a serviceable filter cartridge with a liquid filter assembly; the filter cartridge comprising:
(a) a region of filter media defining a central, open, volume,
(i) the region of filter media having first and second ends;

(b) a first end cap secured to the first end of the region of filter media;
(i) the first end cap having an outermost periphery and a plurality of radial projections thereon; the radial projections being located at the outermost periphery of the first end cap;

(c) an axial stem being a portion of the first end cap and defining a central liquid flow conduit therethrough, in liquid flow communication with the central, open, volume defined by the filter media;
(i) the axial stem including a portion projecting away from the filter media;
(ii) the axial stem including an outer, annular, seal arrangement thereon; and
(iii) an end of the axial stem remote from the filter media comprising a plurality of spaced axial projections each having a free end that is narrower at the free end than at a region closer to the filter media, and a plurality of depressions between the axial projections; and

(d) a second end cap secured to the second end of the region of filter media.

2. A filter cartridge according to claim 1 wherein:
(a) the annular seal arrangement on the axial stem comprises an o-ring seal member.

3. A filter cartridge according to claim 1 wherein:
(a) the axial projections are evenly spaced between each other.

4. A filter cartridge according to claim 1 wherein:
(a) there are at least three axial projections and at least three depressions.

5. A filter cartridge according to claim 1 wherein:
(a) each axial projection free end is non-blunt.

6. A filter cartridge according to claim 1 wherein:
(a) each axial projection free end has an apex.

7. A filter cartridge according to claim 6 wherein:
(a) each apex is not positioned in a center of an associated projection.

8. A filter cartridge according to claim 1 wherein:
(a) each axial projection free end has an apex defined by straight sides.

9. A filter cartridge according to claim 1 wherein:
(a) the annular seal arrangement on the axial stem is smaller in diameter than an outer diameter of the first end cap.

10. A filter cartridge according to claim 9 wherein:
(a) the annular seal arrangement comprises an o-ring seal member that is straight in a side-elevational view.

11. A filter cartridge according to claim 1 wherein:
(a) the second end cap is closed.

12. A filter cartridge for use as a serviceable filter cartridge with a liquid filter assembly; the filter cartridge comprising:
(a) a region of filter media defining a central, open, volume,
(i) the region of filter media having first and second ends;

(b) a first end cap secured to the first end of the region of filter media;
(c) the filter cartridge including an axial stem thereon projecting away from the filter media;
(i) the axial stem having comprising a plurality projections spaced from one another by guide channels;
(ii) each one of the plurality of projections having a non-blunt end defined by an apex and a pair of sides extending at an angle, around the apex, within the range of 110°-170°; and

(d) a second end cap secured to the second end of the region of filter media.

13. A filter cartridge according to claim 12 wherein:
(a) the first end cap is open to the central open volume.

14. A filter cartridge according to claim 12 wherein:
(a) the axial stem defines a central liquid flow conduit therethrough, in liquid flow communication with the central, open, volume defined by the filter media.

15. A filter cartridge according to claim 12 wherein:
(a) the axial stem includes an outer, annular, seal arrangement thereon.

16. A filter cartridge according to claim 12 wherein:
(a) the second end cap is a closed end cap.

Assignees

• Donaldson Co Inc

Inventors

• Greco Enrico
• Buratto Fabrizo
• Cantoni Mauro
• Connelly John
• Hacker John

Classifications

• B01D2201/4076

  Anti-rotational means · CPC title

• B01D35/143

  Filter condition indicators · CPC title

• B01D2201/302

  having inlet or outlet ports · CPC title

• B01D2201/4046

  Means for avoiding false mounting of different parts · CPC title

• B01D35/1573

  Flow control valves · CPC title