Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Fluid pressure responsive
Patent
1987-08-31
1989-04-04
Spitzer, Robert
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Fluid pressure responsive
210 95, 210130, 210168, 210DIG17, B01D 3514
Patent
active
048183857
ABSTRACT:
The specification discloses an externally mounted filter for filtering contaminated fluids from a fluid-containing system. Fluid is conducted from the system to a housing, through a filter element inside the housing, and back to the system. The filter includes an indicator, visible to a person viewing the housing, which is configured to assume an indicating configuration upon exposure to a fluid pressure in the filter in excess of a predetermined level. The filter is configured to discriminate between momentary fluid pressure surges and excess fluid pressure in the filter so that the indicator is not prematurely activated.
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