Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1974-05-08
1976-05-25
Hart, Charles N.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210134, 210172, 210314, 210460, B01D 2710
Patent
active
039591417
ABSTRACT:
A filter assembly for trapping particulate contaminants in a flow of fluid includes a porous cylindrical filter element, a cylindrical screen and a by-pass valve for preventing flow blockage in the event the filter should become clogged. These components are arranged in a configuration which avoids difficulties encountered with prior systems by situating the screen downstream from both the filter element and the by-pass valve and in a separate compartment from the filter. Fluid which may be diverted from passage through the filter by the by-pass valve continues to pass through the screen so that relatively large contaminants continue to be entrapped but the diverted fluid does not pass by the contaminated surface of the clogged filter and thereby pick up previously trapped matter. Either the filter or the screen may be replaced, cleaned, or otherwise serviced without disturbing the other.
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Caterpillar Tractor Co.
Hart Charles N.
Mukai Robert G.
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