Claims
- 1. A combined full flow and bypass oil filter comprising:
- a housing having a closed end and an open end;
- a cover for closing the open end of said housing, wherein said cover includes an outlet opening;
- a full flow filtering element positioned within said housing proximate said cover, wherein said full flow filtering element includes a hollow central core for receiving filtered oil, a first end positioned proximate said cover, and a second end positioned distal of said cover;
- a bypass filtering element positioned within said housing between the closed end of said housing and the second end of said full flow filtering element, wherein said bypass filtering element includes means defining a filtered oil outlet adjacent the second end of the full flow filtering element;
- inlet means for delivering oil into said housing;
- a unitary venturi nozzle including a first open end fluidly connected with the outlet opening of said cover and a second open end positioned within the hollow central core of said full flow filtering element, said venturi nozzle having a flow channel extending between said first and second open ends thereof, said flow channel including a first flow section of a first cross sectional flow area, a second flow section that converges from a second cross sectional flow area at said second open end to said first flow section, and a third flow section that diverges from said first flow section to a third cross sectional flow area at the first open end; and
- conduit means extending axially from said filtered oil outlet of said bypass filtering element to the first section of said flow channel via the hollow central core of said full flow filtering element such that oil flowing through said venturi nozzle from said full flow filtering element to said outlet opening creates a low pressure zone at said first flow section facilitating the draw of oil through said bypass filtering element via said conduit means.
- 2. The oil filter of claim 1 wherein said venturi nozzle and said conduit means are arranged as a single, integral component.
- 3. The filter of claim 1 wherein said Venturi nozzle includes a centering device for said conduit means.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 08/405,387, filed on Mar. 15, 1995, now abandoned, which was a continuation of U.S. patent application Ser. No. 08/084,875, filed on Jun. 30, 1993, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0287527 |
Oct 1988 |
EPX |
573427 |
Feb 1958 |
ITX |
561987 |
Jun 1944 |
GBX |
860871 |
Feb 1961 |
GBX |
Continuations (2)
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Number |
Date |
Country |
Parent |
405387 |
Mar 1995 |
|
Parent |
84875 |
Jun 1993 |
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