Fuel filter element electrical grounding

Patent metadata

Field	Value
Publication number	US-10828584-B2
Application number	US-201816189082-A
Country	US
Kind code	B2
Filing date	Nov 13, 2018
Priority date	Nov 13, 2018
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

An end cap for a fuel filter includes a metal body with a first surface opposite a second surface. A hole extends through the first surface and the second surface of the body. A metal spring is connected to the first surface of the metal body and extends at least partially over the hole.

First claim

The invention claimed is:

1. An end cap for a fuel filter, wherein the end cap comprises:
a metal body with a first surface opposite a second surface;
a fuel outlet extending through the first surface and the second surface of the body; and
a metal spring connected to the first surface of the metal body, wherein the metal spring extends at least partially over the fuel outlet when viewed in a direction parallel to a central longitudinal axis of the fuel outlet.

2. The end cap of claim 1 , wherein the metal spring is a sheet steel spring with a straight first end and a second end curved into a hook, wherein the first end is connected to the first surface of the metal body, and a portion of the hook extends over the fuel outlet when viewed in a direction parallel to a central longitudinal axis of the fuel outlet.

3. The end cap of claim 2 , wherein the straight first end is welded to the first surface of the metal body.

4. The end cap of claim 1 , wherein the metal spring is a sheet metal spring with a first end and a second end curved into a hook, wherein the first end is connected to the first surface of the metal body, wherein the sheet metal spring comprises a bend between the hook and the first end, and wherein a portion of the hook extends over the fuel outlet when viewed in a direction parallel to a central longitudinal axis of the fuel outlet.

5. The end cap of claim 4 , wherein the bend comprises an angle between 120 degrees and 90 degrees.

6. The end cap of claim 1 , wherein the end cap further comprises:
an O-ring surrounding the the fuel outlet.

7. The end cap of claim 1 , wherein the metal body of the end cap is circular with an outer diameter and center axis, and wherein the fuel inlet extends through the metal body on the center axis.

8. A fuel filter comprising:
an end cap, wherein the end cap comprises:
a metal body with a first surface opposite a second surface;
a hole extending through the first surface and the second surface of the body; and
a metal spring connected to the first surface of the metal body, wherein the metal spring extends at least partially over the hole when viewed in a direction parallel to a central longitudinal axis of the hole; and

a filter screen connected to the second surface of the metal body.

9. The fuel filter of claim 8 further comprising:
a second end cap connected to the filter screen opposite the end cap.

10. The fuel filter of claim 8 , wherein the metal spring is sheet steel with a straight first end and a second end curved into a hook, wherein the first end is connected to the first surface of the metal body, and a portion of the hook extends over the hole when viewed in a direction parallel to a central longitudinal axis of the hole.

11. The fuel filter of claim 10 , wherein the straight first end is welded to the first surface of the metal body.

12. The fuel filter of claim 8 , wherein the metal spring is a sheet metal spring with a first end and a second end curved into a hook, wherein the first end is connected to the first surface of the metal body, wherein the sheet metal spring comprises a bend between the hook and the first end, and wherein a portion of the hook extends over the hole when viewed in a direction parallel to a central longitudinal axis of the hole.

13. The fuel filter of claim 12 , wherein the bend comprises an angle between 120 degrees and 90 degrees.

14. The fuel filter of claim 8 , wherein the end cap further comprises:
an O-ring surrounding the hole.

15. An end cap for a fuel filter, wherein the end cap comprises:
a metal body with a first surface opposite a second surface;
a fuel inlet extending through the first surface and the second surface of the body; and
an elastic metal element comprising a first end and a second end, wherein the first end is connected to the first surface of the metal body, and wherein a portion of the elastic metal element extends partially over the fuel inlet when viewed in a direction parallel to a central longitudinal axis of the fuel inlet.

16. The end cap of claim 15 , wherein the elastic metal element is a sheet metal spring with the first end and the second end curved into a hook, wherein the first end is connected to the first surface of the metal body, and a portion of the hook extends over the fuel inlet when viewed in a direction parallel to a central longitudinal axis of the fuel inlet.

17. The end cap of claim 16 , wherein the first end is welded to the first surface of the metal body.

18. The end cap of claim 17 , wherein the sheet metal spring comprises a bend between the hook and the first end.

19. The end cap of claim 18 , wherein the bend comprises an angle between 120 degrees and 90 degrees.

20. The end cap of claim 15 , wherein the end cap further comprises:
an O-ring surrounding the fuel inlet.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Butcka William W

Classifications

• B01D2201/298

  End caps common to at least two filtering elements · CPC title

• B01D35/005 Primary

  Filters specially adapted for use in internal-combustion engine lubrication or fuel systems · CPC title

• B01D2201/305

  Snap, latch or clip connecting means · CPC title

• B01D2201/293

  Making of end caps · CPC title

• B01D2201/291

  End caps · CPC title