FreshPatents.com Logo
stats FreshPatents Stats
n/a views for this patent on FreshPatents.com
Updated: April 14 2014
newTOP 200 Companies filing patents this week


    Free Services  

  • MONITOR KEYWORDS
  • Enter keywords & we'll notify you when a new patent matches your request (weekly update).

  • ORGANIZER
  • Save & organize patents so you can view them later.

  • RSS rss
  • Create custom RSS feeds. Track keywords without receiving email.

  • ARCHIVE
  • View the last few months of your Keyword emails.

  • COMPANY DIRECTORY
  • Patents sorted by company.

AdPromo(14K)

Follow us on Twitter
twitter icon@FreshPatents

Combination filter arrangment and method

last patentdownload pdfdownload imgimage previewnext patent


20120292240 patent thumbnailZoom

Combination filter arrangment and method


A cartridge type filter is mounted in a housing and is serviced through the top of the housing. The cartridge includes first and second media packs axially stacked. The second media pack is in series behind the first media pack, and filters a portion of the liquid therethrough. The second media pack has a higher efficiency than the first media pack. The overall design has a drain system which allows liquid to drain from the interior of the filter housing and back to the sump before the filter cartridge is completely removed from the housing. Other optional features include an oil cooler, various valving, and a filter cartridge lockout mechanism.

Browse recent Donaldson Company, Inc. patents - Minneapolis, MN, US
Inventors: John R. Hacker, Bradley S. HONERMANN, Mark S. Emery
USPTO Applicaton #: #20120292240 - Class: 210181 (USPTO) - 11/22/12 - Class 210 
Liquid Purification Or Separation > With Heater Or Heat Exchanger >Flow Line Connected In Series With Distinct Separator

view organizer monitor keywords


The Patent Description & Claims data below is from USPTO Patent Application 20120292240, Combination filter arrangment and method.

last patentpdficondownload pdfimage previewnext patent

This application is being filed on 30 Jul. 2012, as a Continuation of U.S. Ser. No. 12/864,369, filed 5 Nov. 2010 which is a National Stage of PCT/US2009/031677, filed 22 Jan. 2009 in the name of Donaldson Company, Inc., a U.S. national corporation, applicant for the designation of all countries except the US, and John R. Hacker, Bradley S. Honermann, and Mark Emery, all citizens of the U.S., applicants for the designation of the US only, and claims priority to U.S. Provisional patent application Ser. No. 61/023,296, filed 24 Jan. 2008. To the extent appropriate, a claim of priority is made to each of the above disclosed applications.

TECHNICAL FIELD

This disclosure relates to filtration. In particular, this disclosure relates to filtration of fluid, such as oil or other lubricant for use with, for example, internal combustion engines.

BACKGROUND

Internal combustion engines use various types of filters in order to reduce overall engine component wear. In particular, a filter is used to remove much of the contaminant found in engine oil or created as part of engine operation. On certain diesel engines, two oil filters are used to improve the effectiveness of the filter on removing contaminant.

FIG. 1 shows a prior art system. In FIG. 1, a first filter 200 is located in the system such that the majority of the oil used to lubricate the moving parts passes through it. A second oil filter 202 is located just upstream of this first filter 200. The second oil filter 202 allows the remaining amount of oil to flow through it and directly into the engine oil reservoir (sump) 204. The second filter 202 is more efficient than the first filter 200, which also means that it is more restrictive to oil flow and acts to continuously clean the oil in the reservoir 204. The net effect is obtaining a higher cleanliness level in the oil without the impact of a high pressure drop across the first filter 200.

In certain prior art systems, the approach of FIG. 1 requires two separate filters 200, 202 installed in their own individual housings. This can be inconvenient, occupy too much space, and cause excessive use of housing materials. In these prior art systems, the second filter 202 is in parallel with the first filter 200 and is exposed to the same level of contaminant as the first filter 200. Further, these filters are often a part of a spin-on filter design. Improvements are desirable.

SUMMARY

A filter cartridge assembly is provided including a first media pack and a second media pack. A center endcap is between the first media pack and the second media pack; the center endcap has a wall defining a bore. The first media pack is secured to the center endcap, and the second media pack is secured to the center endcap. The wall of the center endcap defines a slot arrangement, which provides communication between the bore and a region outside of the center endcap.

In another aspect, a filter assembly is provided including a filter cartridge, as characterized above, a base assembly, and a cover. The base assembly includes a base housing defining an interior. The filter cartridge is operably and removably mounted in the interior of the base housing. The cover is removably oriented on the base housing. The cover is selectively removable to allow access to the interior of the base housing and access to the removable filter cartridge.

In another aspect, a method of filtering liquid is provided. One example method includes directing a first stream of liquid through a first filter media pack to remove particulate from the first stream; after removing particulate from the first stream by the first filter media pack, directing some of the volume of the first stream through a filtered liquid port to downstream components and directing the remaining portion of the volume through a second filter media pack to remove particulate and provide a second stream; the second media pack being part of a same cartridge as the first media pack; and after removing particulate from the remaining portion through the second filter media pack, directing the second stream to a liquid sump.

In another aspect, a method of servicing a filter assembly is provided. The method includes providing a filter assembly, as characterized above; removing the cover from the base housing; removing the filter cartridge from the base housing; operably installing a new filter cartridge as characterized above in the base housing; and putting the cover onto the base housing.

Example overall designs may optionally include a drain system that allows liquid to drain from the interior of the filter housing and back to the sump before the filter cartridge is completely removed from the housing. Other optional features include an oil cooler, various valving, and a filter cartridge lockout mechanism.

Not all the features described herein must be incorporated in an arrangement for the arrangement to have some selected advantage, according to the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a prior art filter system;

FIG. 2 is a schematic view of a filter system constructed in accordance with principles of this disclosure;

FIG. 3 is an exploded, perspective view of a filter assembly constructed in accordance with principles of this disclosure;

FIG. 4 is a perspective view of the filter assembly of FIG. 3, assembled for operative use;

FIG. 5 is a perspective view of a filter cartridge usable in the filter assembly of FIGS. 3 and 4;

FIG. 6 is another perspective view of the filter cartridge of FIG. 5;

FIG. 7 is an exploded, perspective view of an endcap usable in the filter cartridge of FIGS. 5 and 6;

FIG. 8 is an exploded, perspective view of an endcap usable in the filter cartridge of FIGS. 5 and 6;



Download full PDF for full patent description/claims.

Advertise on FreshPatents.com - Rates & Info


You can also Monitor Keywords and Search for tracking patents relating to this Combination filter arrangment and method patent application.
###
monitor keywords



Keyword Monitor How KEYWORD MONITOR works... a FREE service from FreshPatents
1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored.
3. Each week you receive an email with patent applications related to your keywords.  
Start now! - Receive info on patent apps like Combination filter arrangment and method or other areas of interest.
###


Previous Patent Application:
Recessed restrictor plate
Next Patent Application:
Plant for treatment of biological sludges with recovery of raw materials and energy
Industry Class:
Liquid purification or separation
Thank you for viewing the Combination filter arrangment and method patent info.
- - - Apple patents, Boeing patents, Google patents, IBM patents, Jabil patents, Coca Cola patents, Motorola patents

Results in 0.71264 seconds


Other interesting Freshpatents.com categories:
Nokia , SAP , Intel , NIKE , -g2-0.2653
     SHARE
  
           

FreshNews promo


stats Patent Info
Application #
US 20120292240 A1
Publish Date
11/22/2012
Document #
13561756
File Date
07/30/2012
USPTO Class
210181
Other USPTO Classes
210252, 210256
International Class
/
Drawings
19



Follow us on Twitter
twitter icon@FreshPatents