Clogging indicator for an aquarium filter

Details Clogging indicator for an aquarium filter Clogging indicator for an aquarium filter

1992-07-22

1993-09-21

Drodge, Joseph W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Material level or thickness responsive

116267, 119259, 210 87, 210 93, 210169, 2104162, B01D 35143

Patent

active

052465713

ABSTRACT:
A filter flow indicator for use with a filter bag into which contaminated aquarium water is pumped which comprises a meter tube connected to a inlet tube by an effective venturi connection. Water flowing in the inlet tube flows across the venturi connection. The rate of flow in the inlet tube is related to the amount of clogging in the filter bag. An indication is included on the meter tube as to when the filter should be replaced. As the filter bag clogs, the flow rate on the inlet tube slows down causing the water level in the meter tube to increase. When the level of the water reaches the indication, the filter is sufficiently clogged so that it should be replaced.

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patent: 5098585 (1992-03-01), Woltman et al.

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