Backwashable fluid filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 20, 1981
Grant Date -
N/A
app pub date -
Feb 7, 1980
filing date -
Nov 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A backwashable filtering device is described including a backwash nozzle and means for effecting relative movement between it and the filter body, and further including a valve assembly movable to open or close the passage between the filter body and the housing outlet in response to low pressure conditions, thereby to maintain the pressure for backwashing the filter body via the nozzle. Also described is the provision of a sleeve axially movable to open or close a passage between the housing inlet and the filter body, which sleeve is movable either manually or automatically in response to pressure or other specified condition.
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Family
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Cited Art Landscape
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