Fuel inlet filter for fuel injectors

Patent metadata

Field	Value
Publication number	US-10060401-B2
Application number	US-201615136545-A
Country	US
Kind code	B2
Filing date	Apr 22, 2016
Priority date	Apr 22, 2016
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A method for compensating for a variable distance between two components of an apparatus for providing a fluid filtering device therebetween is provided. The method comprises placing an adjustable filtering device between two components, altering the distance between the two components, and compensating for the change in distance between the two components by varying a dimension of the adjustable filtering device.

First claim

What is claimed is:

1. A fluid filter assembly comprising:
an upper housing;
a lower housing;
a resilient member that is operatively connected to the upper and lower housings and that is configured to bias the upper and lower housings apart; and
a flexible filter mesh that is operatively connected to the lower and upper housing and that is configured to filter a fluid that passes between the lower and upper housings, wherein
the lower housing comprises a base ring portion and a plurality of legs that extend from the base ring portion in an axially upward direction and that each includes an interlocking feature, and
the base ring defines a cylindrical surface that faces in a radially inward direction, a cylindrical surface that faces in a radially outward direction, a flat annular surface that connects the inwardly facing and outwardly facing cylindrical surfaces, and wherein the legs are positioned on the flat annular surface between the inwardly facing and outwardly facing cylindrical surfaces.

2. The fluid filter assembly of claim 1 further comprising a seal.

3. The fluid filter assembly of claim 2 wherein the upper housing is at least partially complimentary configured to receive the seal.

4. The fluid filter assembly of claim 2 , wherein the resilient member and the flexible filter mesh are disposed between the upper and lower housings.

5. The fluid filter assembly of claim 4 wherein the assembly defines a generally circularly annular configuration that defines a longitudinal axis and a radial direction, wherein the resilient member is positioned radially outward from the flexible filter mesh.

6. The fluid filter assembly of claim 1 , wherein the resilient member is a coil compression spring.

7. The fluid filter assembly of claim 1 wherein the flexible filter mesh includes a ring portion that defines a cylindrical surface that faces radially outwardly and that is configured to be bonded to the lower housing.

8. The fluid filter assembly of claim 1 wherein the flexible filter mesh includes a ring portion that defines a cylindrical surface that faces in an outwardly radial direction and that is configured to be bonded to the upper housing.

9. The fluid filter assembly of claim 1 wherein the upper housing comprises a base ring portion and a plurality of legs that extend from the base ring portion in a downward axial direction that each includes an interlocking feature.

10. The fluid filter assembly of claim 9 wherein the base ring defines a cylindrical surface that faces in a radially outward direction and each of the legs defines a surface that is coextensive with the cylindrical surface.

11. The fluid filter assembly of claim 9 wherein each leg defines a surface that faces in a radially inward direction and the interlocking feature is disposed on the inwardly facing surface and the interlocking feature is a male feature.

12. The fluid filter assembly of claim 9 wherein the upper housing includes a wall that extends from the base ring portion in the axially upward direction and the wall defines a seal receiving groove.

13. The fluid filter assembly of claim 1 wherein each of the legs defines an outwardly radially facing surface that defines a female interlocking feature.

Assignees

• Caterpillar Inc

Inventors

• Krejci Adam Scott

Classifications

• F02M59/368

  Pump inlet valves being closed when actuated · CPC title

• B01D29/055

  ring shaped · CPC title

• B01D29/33

  arranged for inward flow filtration · CPC title

• F02M45/04

  with a small initial part {, e.g. initial part for partial load and initial and main part for full load} · CPC title

• B01D29/036

  ring shaped · CPC title