Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1992-08-31
1994-02-08
Savage, Matthew O.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210136, 210444, 210DIG17, B01D 2710
Patent
active
052845796
ABSTRACT:
A spin-on fluid filter of the type having a hollow, cylindrical filter element enclosed within an outer container and an end plate, is provided with a one-piece, combination anti-drainback and relief valve. The valve includes an axially movable cylindrical sleeve, one end thereof being disposed within the filter element, and the other end thereof normally engaging the end plate radially inwardly of the inlet ports and radially outwardly of the outlet port formed in the end plate. A resilient annular seal extends from the sleeve to normally engage the end plate radially outwardly of the inlet ports. A spring is disposed within the filter element for normally urging the cylindrical sleeve downwardly into engagement with the end plate. The diameters of the end portions of the spring are preferably smaller than the diameter of the central portion thereof.
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Dana Corporation
Savage Matthew O.
LandOfFree
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