Liquid filter assembly and methods

Patent metadata

Field	Value
Publication number	US-10717028-B2
Application number	US-201916241255-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Apr 3, 2013
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A liquid filter assembly includes a porous tubular support member and a filter element removably and replaceably oriented in the interior volume of the support member. A bypass valve arrangement is provided to permit at least some unfiltered liquid to bypass media in the filter element. A dynamic seal can help to seal the bypass valve arrangement.

First claim

What is claimed is:

1. A filter element comprising:
(a) a tubular media pack defining a media interior and having opposite first and second ends;
(b) a first open end cap secured to the media pack at the first end; and
(c) a second closed end cap secured to the media pack at the second end; the second end cap including an exterior portion and an opposite interior portion; the interior portion being in communication with the media interior; the second end cap including an inner rim circumscribed by the media pack;
(i) the exterior portion of the second end cap having a bulge that extends away from a remaining portion of the filter element and beyond the second end of the media pack;
(ii) the interior portion of the second end cap including a plurality of spaced ribs extending radially from a center of the second end cap and not extending past the inner rim.

2. A filter element according to claim 1 wherein:
(a) the interior portion of the second end cap defines a concave receptacle.

3. A filter element according to claim 1 wherein:
(a) the interior portion of the second end cap includes a plurality of gussets extending circumferentially thereon.

4. A filter element according to claim 1 further comprising:
(a) a seal member against the first end cap.

5. A filter element according to claim 4 wherein:
(a) the seal member comprises an o-ring seal member held by the first end cap.

6. A filter element according to claim 5 wherein:
(a) the media pack has an outside diameter which is less than an outside diameter of the o-ring seal member.

7. A filter element according to claim 5 wherein:
(a) the media pack has an outside diameter which is greater than an inside diameter of the o-ring seal member.

8. A filter element according to claim 1 wherein:
(a) the media pack comprises pleated media.

9. A filter element according to claim 1 further comprising:
(a) a seal member supported by the first end cap; the seal member configured to dynamically seal against a portion of an assembly when the filter element is operably installed within the assembly.

10. A filter element according to claim 9 wherein:
(a) the seal member comprises an o-ring seal member.

11. A filter element according to claim 10 wherein:
(a) the media pack has an outside diameter which is less than an outside diameter of the o-ring seal member.

12. A filter element according to claim 11 wherein:
(a) the media pack has an outside diameter which is greater than an inside diameter of the o-ring seal member.

13. A filter element according to claim 12 wherein:
(a) the interior portion of the second end cap defines a concave receptacle.

Assignees

• Donaldson Co Inc

Inventors

• Greco Enrico
• Marangoni Francesco

Classifications

• B01D35/147 Primary

  Bypass or safety valves · CPC title

• B01D2201/295

  with projections extending in a radial outward direction, e.g. for use as a guide, spacing means · CPC title

• B01D29/232

  with corrugated, folded or wound sheets · CPC title

• B01D35/0276

  Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs · CPC title

• B01D2201/347

  Radial sealings · CPC title