Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Position or extent of motion
Patent
1979-10-29
1985-01-22
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Position or extent of motion
210130, 210136, 210223, B01D 2710
Patent
active
044950683
ABSTRACT:
A filter assembly for detachable connection with a housing, comprising an elongated tubular filter element; and a holder assembly for the filter element, which includes a closure plate which engages one end of the filter element and an annular retainer which engages the other end. An elongated rod extending axially through the center of the filter element connects the closure member and annular member together so that the filter element is entrapped therebetween. The filter assembly is insertable through the open end of the housing and into the filter chamber so that the housing inlet is open through the annular retainer to the interior of the filter element. The filter element is spaced radially inwardly from the walls forming the filtering chamber thus defining an annular chamber which is fluidly connected to the housing outlet. A closure cap is then secured to and closes the end of the housing. An indicator cap is secured to the upper end of the rod and a portion of the indicator cap is received within an aperture formed through the closure cap and visible exteriorly of the housing. The indicator member provides an exterior signal that the filter element is contained and properly seated within the fluid filtering chamber. A bypass valve directly fluidly connects the housing inlet with the outlet when the differential pressure across the filter element exceeds a predetermined amount.
REFERENCES:
patent: 3556300 (1971-01-01), Cudo
patent: 3669268 (1972-06-01), Brown
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