Filter device

Patent metadata

Field	Value
Publication number	US-11549473-B2
Application number	US-201916529096-A
Country	US
Kind code	B2
Filing date	Aug 1, 2019
Priority date	Apr 21, 2015
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A filter device may include a filter housing with a filter housing pot and a cover screwable onto the filter housing pot, and an annular filter element arranged in the filter housing and having an axially protruding pin for closing a run-off channel. The annular filter element may be connected to the cover via a first thread, which may have a dome protruding centrally and axially from an upper end disc of the annular filter element. The first thread may be designed running counter to a second thread arranged between the filter housing pot and the cover.

First claim

The invention claimed is:

1. A filter device comprising:
a filter housing with a filter housing pot and a cover screwable onto the filter housing pot; and
an annular filter element arranged in the filter housing, the annular filter element having an axially protruding pin for closing a run-off channel;
wherein the annular filter element is connected to the cover via a first thread;
wherein the first thread has a dome protruding centrally and axially from an upper end disc of the annular filter element; and
wherein the first thread is designed running counter to a second thread arranged between the filter housing pot and the cover.

2. The filter device according to claim 1 , wherein the first thread further has hollow cylindrical spring elements which protrude axially from the cover.

3. The filter device according to claim 2 , wherein a total of eight spring elements are provided.

4. The filter device according to claim 1 , wherein the dome is formed in one piece with the upper end disc.

5. The filter device according to claim 1 , wherein the first thread is formed as a left-hand thread and the second thread as a right-hand thread.

6. The filter device according to claim 1 , wherein on a face side of the dome a carrier geometry is arranged, which cooperates with a counter-carrier geometry on a cover side such that the annular filter element on mounting of the cover co-rotates.

7. The filter device according to claim 6 , wherein the carrier geometry and the counter-carrier geometry cooperate in a key-lock manner.

8. The filter device according to claim 1 , wherein the filter device is constructed as one of a fuel filter or a lubricant filter.

9. The filter device according to claim 1 , wherein the pin protrudes axially from a lower end disc.

10. The filter device according to claim 1 , wherein the pin is formed in one piece with the lower end disc.

11. An annular filter element for a filter device, comprising:
an upper end disc;
an axially protruding pin for closing a run-off channel; and
a dome protruding centrally and axially from the upper surface of the upper end disc, the dome and the pin on opposing axial ends of the filter element;
wherein, on the upper surface of the dome, a carrier geometry is arranged.

12. The annular filter element according to claim 11 , wherein the dome is formed in one piece with the upper end disc.

13. The annular filter element according to claim 11 , wherein the pin protrudes axially from a lower end disc.

14. The annular filter element according to claim 11 , wherein the pin is formed in one piece with the lower end disc.

15. A filter element for a filter device, the filter element comprising:
an upper end disk;
a lower end disk;
an enclosure below the lower end disk;
a pin extending axially outward from the enclosure, the pin axially offset from a central axis of the filter element; and
a protrusion extending axially outward from the upper end disk, the protrusion having a first angled thread for engagement with a cover of the filter device.

16. The filter element according to claim 15 , wherein the protrusion is a dome having an upper surface.

17. The filter element according to claim 16 , wherein, on the upper surface of the dome, a carrier geometry is arranged, the carrier geometry being selectively configured to cooperate with a counter-carrier geometry on the cover.

18. The filter element according to claim 15 , wherein the protrusion is formed in one piece with the upper end disc.

19. The filter element according to claim 15 , wherein the enclosure is a water collecting space.

20. The filter device according to claim 15 , wherein the pin is formed in one piece with the enclosure.

Assignees

• Mahle Int Gmbh

Inventors

• Kollmann Andreas
• Mert Stephan
• Ogris Hannes

Classifications

• B01D2201/305

  Snap, latch or clip connecting means · CPC title

• B01D35/153 Primary

  Anti-leakage or anti-return valves · CPC title

• B01D35/301

  Constructions of two or more housings (B01D35/12 takes precedence) · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• B01D2201/4007

  Use of cam or ramp systems · CPC title