Ring filter element

Patent metadata

Field	Value
Publication number	US-11504654-B2
Application number	US-202016803622-A
Country	US
Kind code	B2
Filing date	Feb 27, 2020
Priority date	Feb 28, 2019
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

A ring filter element for a filter device may include a connecting region and an axially projecting pin. The pin may include an arm via which the pin is connected to the connecting region. The arm may include a predetermined breaking point disposed spaced apart from the connecting region.

First claim

The invention claimed is:

1. A ring filter element for a filter device, comprising:
a connecting region;
an axially projecting pin including an arm via which the pin is connected to the connecting region;
wherein the arm includes a predetermined breaking point disposed spaced apart from the connecting region;
wherein the predetermined breaking point is structured as a cross-sectional tapering;
wherein a free end of the pin includes a closure element; and
wherein an outer diameter of the closure element is larger than an outer diameter of the arm.

2. The ring filter element according to claim 1 , wherein the arm has a cruciform cross section.

3. The ring filter element according to claim 1 , wherein the arm includes four webs, and wherein the four webs at least one of:
merge into the connecting region in a rounded-off manner; and
are reinforced.

4. The ring filter element according to claim 3 , wherein:
the four webs each have a width extending in a circumferential direction; and
at least one web of the four webs includes a portion in which the width decreases in a direction extending away from the connecting region.

5. The ring filter element according to claim 1 , wherein the closure element includes an annular groove configured to receive an O-ring seal.

6. The ring filter element according to claim 5 , wherein the annular groove is disposed directly between and separates the arm and the closure element.

7. The ring filter element according to claim 1 , wherein a one-piece sealing lip is moulded onto the closure element.

8. The ring filter element according to claim 1 , further comprising a dirt bowl, wherein the pin is integrally provided with the dirt bowl.

9. The ring filter element according to claim 1 , further comprising a lower end disc, wherein:
the pin is integrally provided with the lower end disc; and
the predetermined breaking point is structured as a cross-sectional tapering.

10. The ring filter element according to claim 1 , wherein:
the arm includes a portion defined by four webs; and
the four webs are connected to one another such that the arm has a cruciform cross section.

11. The ring filter element according to claim 10 , wherein the four webs are tapered in a region of the predetermined breaking point.

12. The ring filter element according to claim 10 , wherein the four webs respectively merge into the connecting region such that a rounded transition is defined therebetween.

13. The ring filter element according to claim 1 , wherein the closure element is structured as a head.

14. The ring filter element according to claim 1 , wherein:
the closure element has a tapered end portion with an axial end face; and
an outer diameter of the arm is larger than an outer diameter of the axial end face.

15. The ring filter element according to claim 1 , wherein:
the closure element has a tapered end portion with an axial end face;
the closure element includes an annular groove configured to receive an O-ring seal; and
an outer diameter of the annular grove is larger than an outer diameter of the axial end face.

16. The ring filter element according to claim 1 , wherein a free end of the closure element has a truncated cone shape.

17. A filter device, comprising a filter housing and a ring filter element arranged in the filter housing, the ring filter element including:
a connecting region;
an axially projecting pin including an arm, the arm connecting the pin to the connecting region and including a predetermined breaking point disposed spaced apart from the connecting region;
wherein a free end of the pin includes a closure element having a tapered end portion;
wherein an outer diameter of the closure element is larger than an outer diameter of the arm;
wherein the filter housing includes a passage structured complementarily to the pin; and
wherein operation of the filter device is exclusively possible when the pin engages in and closes the passage.

18. The filter device according to claim 17 , wherein the filter device is structured as one of an oil filter and a fuel filter.

19. The filter device according to claim 17 , wherein the passage is a drainage passage.

20. A ring filter element for a filter device, comprising:
a connecting region;
an axially projecting pin including an arm, the arm connecting the pin to the connecting region;
the arm including a predetermined breaking point disposed spaced apart from the connecting region;
wherein at least a portion of the arm is defined by a plurality of webs structured and arranged to provide the arm with a cruciform cross section;
wherein the plurality of webs each have a width extending in a circumferential direction; and
wherein at least one web of the plurality of webs includes a portion in which the width decreases in a direction extending away from the connecting region.

Assignees

• Mahle Int Gmbh

Inventors

• Kollmann Andreas
• Wieler Patrick

Classifications

• B01D35/30

  Filter housing constructions · CPC title

• B01D2201/291

  End caps · CPC title

• B01D35/16 Primary

  Cleaning-out devices {, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid} · CPC title

• B01D29/15

  arranged for inward flow filtration · CPC title

• B01D35/153

  Anti-leakage or anti-return valves · CPC title