Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1982-02-09
1984-02-14
Adee, John
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210418, 210448, B01D 3502
Patent
active
044315333
ABSTRACT:
A filter for liquids, particularly drinking water comprises a housing with an inlet connected in the housing and an outlet connected out of the housing with a filter chamber in the housing having a filter material therein. The filter chamber has a connection to the inlet and to the outlet and in addition there is a direct passage which has a connection to both the inlet and the outlet. A settable control is associated with the housing and in one position it permits flow through the filter chamber and then to the outlet and in another position it permits direct flow from the inlet of the housing to the direct passage to the outlet. The settable control is associated with an indicator which is set with the control for the flow through the filter to provide an indication such as an optical or a sonic indication. In one embodiment of the invention the indicator comprises a battery operated light and the construction is such that the battery will wear out to cause the light to go out at a time comparable to the ordinary use time for the filtering material which may, for example comprise charcoal.
REFERENCES:
patent: 3869382 (1975-03-01), Tejeda
patent: 4166792 (1979-09-01), Offer
patent: 4212743 (1980-07-01), Meter et al.
Adee John
Standard Messgeratefabrik GmbH
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