Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1989-08-14
1990-09-25
Hruskoci, Peter
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210430, 210440, 210444, 2105021, 210DIG17, 137549, B01D 2710
Patent
active
049591410
ABSTRACT:
A fuel filter with improved means of preventing water and particulate contaminant from passing therethrough including a cannister, a place secured to the cannister open end having a central fluid outlet and fluid inlet openings spaced from the fluid outlet, a rigid tubular fluid pervious member within the cannister having one end in sealed communication with the plate fluid outlet opening, a flexible filter medium surrounding the outer surface of the tubular member through which fuel really passes but which resists the passage of particulate matter and water, a first deformable washer having an opening therethrough secured to the end of the tubular member opposite that atached to the plate, a ball within the cannister and normally in engagement with the first washer, the ball having a diameter slightly greater than the internal diameter of the washer, and an annular seat between the plate fluid outlet opening and the first end of the tubular member, a second deformable washer member supported concentrically of and adjacent to the annular seal, the first washer being deformable to permit the ball to pass through when a predetermined fluid pressure drop develops across the flexible filter media, the ball thereby engaging and passing the second washer to engage the seat to block further fluid flow through the filter, the second washer serving to retain the ball adjacent the seat even in absence of fluid pressure.
REFERENCES:
patent: 3339734 (1967-09-01), Kasten
patent: 3766940 (1973-10-01), Mason
patent: 4364825 (1982-12-01), Connor, Jr.
patent: 4485011 (1984-11-01), Cole et al.
patent: 4787949 (1988-11-01), Cole et al.
Facet Quantek, Inc.
Hruskoci Peter
Savage Matthew O.
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