Filter interlock with tabs mating with a pedestal or a housing

Patent metadata

Field	Value
Publication number	US-11478733-B2
Application number	US-202017102831-A
Country	US
Kind code	B2
Filing date	Nov 24, 2020
Priority date	Nov 24, 2020
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A pedestal for use with a canister filter system and a filter element for positioning and retaining the filter element in the canister filter system includes an at least partially annular body defining a longitudinal axis, a radial direction, and a circumferential direction. Also, the pedestal includes an annular wall that terminates at a bottom free end, and that defines a slot that extends axially upwardly and circumferentially from the bottom free end. A flow aperture extends through the annular wall that is disposed axially above the slot.

First claim

What is claimed is:

1. A filter element that includes at least a partially annular configuration and that defines a longitudinal axis, a radial direction, and a circumferential direction, the filter element comprising:
an annular filter media defining a central passage;
a center tube that is disposed in the central passage of the annular filter media that defines a central reservoir, and the annular filter media surrounds the center tube and the central reservoir;
a central fluid supply tube that is disposed in the central reservoir of the center tube, defining a supply passage that is attached axially to the center tube;
a top open end joined to the center tube disposed along the longitudinal axis, the top open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element;
a bottom open end joined to the center tube opposite the top open end disposed along the longitudinal axis; and
a locking feature disposed proximate to the top open end, the locking feature including at least one of the following: (a) a tab that extends from the center tube or the central fluid supply tube, and (b) a slot that is formed on the center tube or the central fluid supply tube that extends axially and circumferentially.

2. The filter element of claim 1 , wherein the supply passage is not in fluid communication with the central reservoir and defines a fully circular flow flux, and the locking feature includes the tab that extends radially outwardly from the central fluid supply tube.

3. The filter element of claim 2 , wherein the center tube includes an annular shelf that extends radially outwardly from the central reservoir, and the central fluid supply tube includes a platform that extends radially outwardly from the central fluid supply tube, the platform engages the annular shelf, and the tab is disposed axially above the platform and includes a cylindrical or conical shape.

4. The filter element of claim 3 , wherein the central fluid supply tube comprises an elastomer, a rubber, a plastic, or a foam material, and the annular filter media includes a water repellant material.

5. The filter element of claim 4 , wherein the center tube includes a solid wall that extends axially upwardly from the annular shelf to the top open end of the filter element and an apertured wall that extend axially downwardly from the annular shelf.

6. The filter element of claim 5 , wherein the central fluid supply tube includes another solid wall that defines a radially inner conical surface that defines the supply passage and a diameter that is greatest proximate to the top open end of the filter element, and the tab extends radially outwardly from the solid wall, and further comprising:
an integrated seal member that is attached to the filter element and includes a sealing portion that is disposed radially away from the annular filter media, and axially between the top open end and the bottom open end.

Assignees

• Caterpillar Inc

Inventors

• Oedewaldt Stephen Ellis
• Immel Jon T
• Ries Jeffrey R
• Morehouse Iii Darrell Lee

Classifications

• B01D29/19

  on solid frames with surface grooves or the like · CPC title

• B01D2201/301

  Details of removable closures, lids, caps, filter heads · CPC title

• B01D2201/316

  Standpipes · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D29/96

  in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters (B01D29/09, B01D29/70 take precedence) · CPC title