Life indicator and cartridge for indicating total water flow

Details Life indicator and cartridge for indicating total water flow Life indicator and cartridge for indicating total water flow

1993-09-08

1995-10-17

Drodge, Joseph W.

Liquid purification or separation

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

Responsive to fluid flow

73861, 210 90, 340603, B01D 1712

Patent

active

054587662

ABSTRACT:
A life indicator is so designed that an electric current flows to a light emitting diode utilizing a battery as a power source when two electrodes are electrically connected. The two electrodes are so installed as to be electrically connected by passing water through a water passage communicating with an objective equipment, and the discharge life of the battery is set equal to the service life of the equipment.

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