Fuel filter bowl assemblies

Patent metadata

Field	Value
Publication number	US-2021102519-A1
Application number	US-201916592238-A
Country	US
Kind code	A1
Filing date	Oct 3, 2019
Priority date	Oct 3, 2019
Publication date	Apr 8, 2021
Grant date	—

Abstract

A fuel filter assembly includes a filter bowl body including a bottom wall, the bottom wall having a concave feature. The fuel filter assembly includes an electro-static discharge (ESD) pin at least partially positioned within in the concave feature. A method for discharging electro-static in a fuel filter assembly includes providing a filter bowl body including a bottom wall, the bottom wall having a concave feature. The method includes discharging electro-static by positioning an ESD pin at least partially within the concave feature.

First claim

What is claimed is:

1 . A fuel filter assembly comprising:
a filter bowl body including a bottom wall, the bottom wall having a concave feature; and an electro-static discharge (ESD) pin at least partially positioned within the concave feature.

2 . The assembly of claim 1 , wherein the ESD pin has a first end and a second end and defines a longitudinal axis between the first end and the second end.

3 . The assembly of claim 2 , wherein the first end includes a convex tip defining a convex surface.

4 . The assembly of claim 3 , wherein a diameter of the concave feature is larger than a diameter of the convex tip.

5 . The assembly of claim 3 , wherein the convex surface abuts a concave surface of the concave feature.

6 . The assembly of claim 3 , wherein a shape of the convex tip conforms to the concave feature.

7 . The assembly of claim 1 , further comprising a fuel filter element positioned in the filter bowl body.

8 . The assembly of claim 7 , wherein the fuel filter element is positioned around the ESD pin.

9 . The assembly of claim 7 , wherein the fuel filter element is a non-conductive material.

10 . The assembly of claim 7 , further comprising a pin support member operatively connected to at least one of the fuel filter element or the filter bowl body, wherein the pin support member includes an aperture for receiving the ESD pin.

11 . The assembly of claim 10 , wherein the ESD pin is press-fit within the aperture of the pin support member.

12 . The assembly of claim 1 , wherein the filter bowl body is a metallic material.

13 . A method of making a fuel filter assembly that discharges electro-static during operation, the method including:
providing a filter bowl body including a bottom wall, the bottom wall having a concave feature; and positioning an electro-static discharge (ESD) pin at least partially within the concave feature to discharge electro-static during operation.

14 . The method of claim 13 , wherein the ESD pin has a first end and a second end and defines a longitudinal axis between the first end and the second end.

15 . The method of claim 14 , wherein the first end includes a convex tip defining a convex surface.

16 . The method of claim 15 , wherein positioning the ESD pin includes positioning the convex surface to abut a concave surface of the concave feature.

17 . The method of claim 13 , wherein providing the filter bowl body includes machining the concave feature into the bottom wall.

18 . The method of claim 13 , further comprising providing a pin support member.

19 . The method of claim 18 , wherein positioning the ESD pin includes positioning the ESD pin within an aperture of the pin support member.

20 . The method of claim 18 , wherein positioning the ESD pin including press-fitting the ESD pin within the aperture of the pin support member.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Song Shunjun

Classifications

• B01D29/117 Primary

  arranged for outward flow filtration (B01D29/23, B01D29/35 take precedence) · CPC title

• B01D29/11

  with bag, cage, hose, tube, sleeve or like filtering elements · CPC title

• F02M37/34 Primary

  by the filter structure, e.g. honeycomb, mesh or fibrous · CPC title

• B01D2201/50

  Means for dissipating electrostatic charges · CPC title

• B01D46/50

  Means for discharging electrostatic potential · CPC title