Dual flow filter

Details Dual flow filter Dual flow filter

2005-05-17

2005-05-17

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

C210S316000, C210S317000, C210S352000, C210S428000, C210S440000, C210S455000, C210S493100, C210S496000, C210SDIG009, C210SDIG009

Reexamination Certificate

active

06893555

ABSTRACT:
A dual flow filter unit for the filtration of a pressurized liquid such as oil, comprising a closed housing (10) having an inlet (31), and main and secondary outlets (32, 13) for that liquid. The unit further comprises a main filter element (21) arranged in the housing (10) and having an unfiltered fluid surface exposed to the majority of the liquid flow, the flow through the main filter (21) being directed to the main outlet (32) from the housing (10); and a secondary filter element (17) exposed to a portion of the liquid flow supplied to the housing inlet (31), any flow through the secondary filter being directed to the secondary outlet (13) from the housing. The main filter element (21) offers a low resistance to the flow of fluid therethrough relative to the secondary filter element (17) so that the majority of the flow through the inlet (31) is filtered by the main filter element (21) and the remainder by the secondary filter element (17). This allows better filtration of the liquid without adversely affecting the flow rate or pressure thereof.

REFERENCES:
patent: 2406308 (1946-08-01), Stokes et al.
patent: 2929506 (1960-03-01), Belgarde
patent: 3586171 (1971-06-01), Offer
patent: 4036755 (1977-07-01), Dahm et al.
patent: 4738776 (1988-04-01), Brown
patent: 5217606 (1993-06-01), Ramponi et al.
patent: 5698097 (1997-12-01), Gebert et al.
patent: 341349 (1989-11-01), None
patent: 362554 (1990-04-01), None
patent: 558828 (1993-09-01), None

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