Hydraulic spin-on filter cartridge having base plate supporting radially directed seal

Patent metadata

Field	Value
Publication number	US-9358485-B2
Application number	US-201213557682-A
Country	US
Kind code	B2
Filing date	Jul 25, 2012
Priority date	Aug 19, 2011
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A filter element is provided. The filter element is removably engaged with a filter head having an inlet and an outlet. The filter element includes an outer housing, a filter cartridge, and a baseplate. The filter element further includes a plurality of seals adapted to seal between the baseplate and the filter head, and between the baseplate and the filter cartridge.

First claim

What is claimed is:

1. A filter element adapted to removably engage a filter head having an inlet and an outlet, the filter element comprising:
an outer housing;
a filter cartridge non-removably secured within the outer housing, having:
an open end cap defining a central aperture;
a closed end cap; and
a tubular ring of filter media extending axially along a longitudinal axis between the open and closed end caps and around the longitudinal axis, and defining an inner cavity, and further defining an outer cavity between the outer housing and an outer periphery of the filter media, wherein an inlet side of the filter element comprises the outer cavity, and an outlet side of the filter element comprises the inner cavity;

a baseplate having a one-piece construction, non-removably secured within the outer housing and permitting flow between the inlet and the inlet side through at least one inlet port;
a first seal retained between and sealing the open end cap to the baseplate to prevent fluid from flowing between the inlet and outlet sides by bypassing the filter media;
a second seal retained by the baseplate configured to seal with a first sealing surface of a filter head;
a third seal retained by the baseplate configured to seal with a second sealing surface of a filter head;
a fourth seal retained between the baseplate and the outer housing, arranged to limit fluid communication between the inlet side and an exterior of the housing;
wherein the baseplate includes a first flow opening, a seal mount portion, an outer mounting portion configured for removably engaging the filter head, and a retainer portion adapted to non-removably secure the filter cartridge within the outer housing; and
wherein the seal mount portion extends axially away from the open and closed end caps, and defines a radially outwardly opening groove adapted to axially retain and radially support the second seal.

2. The filter element of claim 1 , wherein the second seal is arranged to prevent fluid communication between the inlet side and outlet side, and the third seal is arranged to limit fluid communication between the inlet side and an exterior of the outer housing.

3. The filter element of claim 1 , wherein the outer housing defines a lip portion, and wherein the lip portion partially axially abuts the baseplate to non-removably secure the baseplate within the housing.

4. The filter element of claim 1 , wherein the at least one inlet port is a plurality of inlet ports spaced around and radially outside the first flow opening, the at least one inlet port opening fluidly communicating with the outer cavity.

5. The filter element of claim 1 , wherein the outer mounting portion has a threaded portion adapted to threadably engage the filter head.

6. The filter element of claim 1 , wherein the retaining portion axially abuts the open end cap to non-removably secure the filter cartridge within the outer housing.

7. The filter element of claim 1 , wherein the outer mounting portion defines an inwardly opening groove adapted to retain the third seal.

8. The filter element of claim 1 , wherein the central aperture of the open end cap is surrounded by an axially depending portion and a radially inwardly extending portion attached to the axially depending portion, forming a stepped configuration therewith, adapted to axially and radially support the first seal.

9. The filter element of claim 1 , wherein the first flow opening is surrounded by an annular extending portion, the annular extending portion extending axially through the central aperture of the open end cap, such that a distal end is positioned axially between the open and closed end caps, and wherein the annular extending portion provides an axial sealing surface and a radial sealing surface for the first seal.

10. The filter element of claim 1 , wherein the second seal surrounds the seal mount portion.

11. The filter element of claim 1 , wherein the flow opening of the baseplate is defined by an axially extending annular portion, the axially extending annular portion having an outer peripheral first seal sealing surface for the first seal;
wherein the seal mount portion defines a second seal sealing surface for the second seal; and
wherein the second seal sealing surface is radially outward relative to the longitudinal axis from the outer peripheral first seal sealing surface.

12. The filter element of claim 1 , wherein the radially outwardly opening groove extends radially away from the longitudinal axis.

13. A filter element, comprising:
an outer housing having a closed end and an open end, and a sidewall extending therebetween, the sidewall defining a lip at the open end;
a filter cartridge non-removably secured within the outer housing, including:
an open end cap having a central aperture;
a closed end cap; and
filter media extending between the open and closed end caps and around and along a longitudinal axis, defining an inner cavity, and further defining an outer cavity between the sidewall and an outer periphery of the filter media;

a baseplate having a one-piece construction non-removably secured within the outer housing, defining:
a first flow opening defined by an axially extending annular portion, the first flow opening in fluid communication with the inner cavity;
an axially extending seal mount portion;
an outer mounting portion, adapted to removably mount the filter element to a filter head, the outer mounting portion axially abutting the lip to non-removably secure the baseplate within the outer housing;
at least one inlet port in fluid communication with the outer cavity; and
a retainer portion between the axially extending seal mount and the outer mounting portion securely retaining the filter cartridge within the outer housing;

a first seal sealing between the open end cap and an outer peripheral surface of the axially extending annular portion;
a second seal adapted to radially seal between the axially extending seal mount portion and a first sealing surface of a filter head;
a third seal adapted to seal between the outer mounting portion and a second sealing surface of the filter head; and
a fourth seal retained between the baseplate and the outer housing, arranged to limit fluid communication between the inlet side and an exterior of the housing; and
wherein the axially extending seal mount portion defines a radially outwardly opening groove, adapted to retain the second seal.

14. The filter element of claim 13 , wherein the at least one inlet port is a plurality of inlet ports, spaced around and radially outside the first flow opening.

15. The filter element of claim 13 , wherein the axially extending annular portion depends from the retainer portion and extends axially through the central aperture such that it is at least in part surrounded by filter media.

16. The filter element of claim 13 , wherein the outer mounting portion is threaded, and adapted to threadably engage the filter head.

17. The filter element of claim 13 , wherein the second seal surrounds the seal mount portion.

18. The filter element of claim 13 , wherein the flow opening of the baseplate is defined by an axially extending annular portion, the axially extending annular portion having an outer peripheral first seal sealing surface for the first seal;
wherein the seal mount portion defines a second seal sealing surface for the second seal; and
wherein the second seal sealing surface is radially outward relative to the longitudinal axis from the outer peripheral first seal sealing surface.

Assignees

• Krull Timothy L
• Baldwin Filters Inc

Inventors

• Krull Timothy L

Classifications

• B01D27/08

  Construction of the casing · CPC title

• B01D35/306 Primary

  Filter mounting adapter · CPC title

• B01D2201/347

  Radial sealings · CPC title