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US3928201A Expired / Lapsed US ⏱️ 0.0 years remaining

Filter mounting and bypass valve assembly

Assignee: Caterpillar Inc
•
Filing: 1974-08-08
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Granted: 1975-12-23
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Expires: 1994-08-08
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Abstract

Abstract A filter assembly includes a housing within which is disposed a filter element with resilient support means at one end. Inlet means direct fluid to the filter, through which such fluid normally flows. The fluid then normally flows through outlet means defined by the housing. The fluid flowing through the inlet means is in communication with a valve including a valving element movable toward the filter element to allow fluid to flow from the inlet means to the outlet means, bypassing the filter element. A helical spring is disposed between the valving element and the resilient support means for the filter element to bias the valving element in a position so that the fluid is normally directed through the filter element. An increase of the fluid pressure in the filter element moves the valve element toward the filter element against the resilience of the spring, so that the fluid bypasses the filter element.

Inventors

  • 👤 John A Junck
  • 👤 Eugene E Latimer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 05:28
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/027; B01D35/14; B01D35/147

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 295 words
A FILTER ASSEMBLY COMPRISING: A HOUSING HAVING AN OPENING FOR RECIEVING A FILTER ELEMENT, COVER ENCLOSING SAID OPENING, AND INCLUDING FLUID INLET AND OUTLET MEANS; AN ANNULAR FILTER EMEMENT MOUNTED WITHIN SAID HOUSING ADJACENT AND HAVING ONE END IN ENGAGEMENT WITH THE END COVER; ENLARGED CINDUIT MEANS FOR DIRECTING FLUID FROM THE FLUID INLET MEANS THROUGH THE FILTER ELEMENT; VALVE MEANS MOUNTED ON ONE END OF SAID CONDUIT MEANS AND COMPRISING A VALVING ELEMENT MOVEABLE TO A FIRST POSITION AWAY FROM THE FILTER ELEMENT SO THAT THE FLUID-DIRECTING MEANS DIRECT FLUID FROM THE FLUID INLET MEANS THROGUH THE FILTER ELEMENT, AND MOVABLE AWAY FROM THE FIRST POSITION TOWARD THE FILTER ELEMENT TO ALLOW FLUID TO FLOW FROM THE FLUID INLET MEANS TO THE FLUID OUTLET MEANS, BYPASSING THE FILTER ELEMENT; ANNULAR SUPPORT MEANS INCLUDING SEAL MEANS MOUNTED ON SAID CONDUIT MEANS FOR ENGAGING AND SUPPORTING THE OTHER END OF SAID FILTER ELEMENT; SAID ANNULAR SUPPORT MEANS CONSISTING OF AN INNER HUB MEMBER SLIDABLY MOUNTED ON SAID ENLARGE CONDUIT MEANS, A RADIALLY EXTENDING FLANGE EXTENDING OUTWARDLY FROM SAID HUB AND INTEGRAL THEREWITH, AN ANNULAR GROOVE SEPARATING ONE SIDE OF SAID FLANGE INTO INNER AND OUTER ANNULAR SUPPORTING SURFACES ENGAGING SAID OTHER END OF SAID FILTER ELEMENT, AND, VENT PORTS EXTENDING FROM THE GROOVE OF THE OTHER SIDE OF SAID FLANGE; AND, RESILIENT MEAND INTERPOSED BETWEEN THE VALVING ELEMENT AND THE ANNULAR SUPPORT AND SEAL MEANS, THE VALVING ELEMENT BEING BIASED THEREBY INTO SAID FIRST POSITION AND MOVABLE TOWARD THE FILTER ELEMENT AGAINST THE RESILIENCE THEREOF, THE VALVE MEANS BEING SUBJECTING THE FLUID PRESSURE OF THE FLUID INTRODUCED THROUGH THE FLUID INLET MEANS TO THE FILTER ELEMENT, SO THAT THE VALVING ELEMENT MOVES TOWARD THE FILTER ELEMENT UPON INCREASED FLUID PRESSURE BUILT UP IN THE FILTER ELEMENT.
Claim 2
Dependent Claim 295 words
A FILTER ASSEMBLY COMPRISING: A HOUSING HAVING AN OPENING FOR RECIEVING A FILTER ELEMENT, COVER ENCLOSING SAID OPENING, AND INCLUDING FLUID INLET AND OUTLET MEANS; AN ANNULAR FILTER EMEMENT MOUNTED WITHIN SAID HOUSING ADJACENT AND HAVING ONE END IN ENGAGEMENT WITH THE END COVER; ENLARGED CINDUIT MEANS FOR DIRECTING FLUID FROM THE FLUID INLET MEANS THROUGH THE FILTER ELEMENT; VALVE MEANS MOUNTED ON ONE END OF SAID CONDUIT MEANS AND COMPRISING A VALVING ELEMENT MOVEABLE TO A FIRST POSITION AWAY FROM THE FILTER ELEMENT SO THAT THE FLUID-DIRECTING MEANS DIRECT FLUID FROM THE FLUID INLET MEANS THROGUH THE FILTER ELEMENT, AND MOVABLE AWAY FROM THE FIRST POSITION TOWARD THE FILTER ELEMENT TO ALLOW FLUID TO FLOW FROM THE FLUID INLET MEANS TO THE FLUID OUTLET MEANS, BYPASSING THE FILTER ELEMENT; ANNULAR SUPPORT MEANS INCLUDING SEAL MEANS MOUNTED ON SAID CONDUIT MEANS FOR ENGAGING AND SUPPORTING THE OTHER END OF SAID FILTER ELEMENT; SAID ANNULAR SUPPORT MEANS CONSISTING OF AN INNER HUB MEMBER SLIDABLY MOUNTED ON SAID ENLARGE CONDUIT MEANS, A RADIALLY EXTENDING FLANGE EXTENDING OUTWARDLY FROM SAID HUB AND INTEGRAL THEREWITH, AN ANNULAR GROOVE SEPARATING ONE SIDE OF SAID FLANGE INTO INNER AND OUTER ANNULAR SUPPORTING SURFACES ENGAGING SAID OTHER END OF SAID FILTER ELEMENT, AND, VENT PORTS EXTENDING FROM THE GROOVE OF THE OTHER SIDE OF SAID FLANGE; AND, RESILIENT MEAND INTERPOSED BETWEEN THE VALVING ELEMENT AND THE ANNULAR SUPPORT AND SEAL MEANS, THE VALVING ELEMENT BEING BIASED THEREBY INTO SAID FIRST POSITION AND MOVABLE TOWARD THE FILTER ELEMENT AGAINST THE RESILIENCE THEREOF, THE VALVE MEANS BEING SUBJECTING THE FLUID PRESSURE OF THE FLUID INTRODUCED THROUGH THE FLUID INLET MEANS TO THE FILTER ELEMENT, SO THAT THE VALVING ELEMENT MOVES TOWARD THE FILTER ELEMENT UPON INCREASED FLUID PRESSURE BUILT UP IN THE FILTER ELEMENT.
Claim 3
Dependent Claim 23 words
The filter assembly of claim 1 wherein said vent means comprises an aperture communicating said groove with the other side of said flange.
Claim 4
Dependent Claim 24 words
The filter assembly of claim 2 wherein said supporting surfaces cover more than 50% of the area of the end of said filter element.
Claim 5
Dependent Claim 49 words
The filter assembly of claim 3 wherein said end cover includes means including an annular groove defining inner and outer annular support surfaces engaging said one end of said filter element; and a plurality of radially extending slots extending across said outer annular support surface for venting said groove.
Claim 6
Dependent Claim 31 words
The filter assembly of claim 1 wherein said end cover includes means including an annular groove defining inner and outer annular support surfaces engaging said one end of said filter element.
Claim 7
Dependent Claim 25 words
The filter assembly of claim 5 including a plurality of radially extending slots formed in said outer annular support surface for venting said annular groove.

References Cited (Backward Citations)

US3269540A Cited
US3344923A Cited
US3487930A Cited
US3572508A Cited
US3794168A Cited
US3886072A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-22 1979-06-23 1979-12-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-22 1983-06-23 1983-12-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-22 1987-06-23 1987-12-23 $7700.00 Window Closed / Lapsed

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