Coulometer with end of integration color change indicator

Details Coulometer with end of integration color change indicator Coulometer with end of integration color change indicator

1976-02-13

1977-01-04

Segal, Robert

Electricity: measuring and testing

Electrical speed measuring

Including 'event' sensing means

73 714, G04F 800

Patent

active

040016889

ABSTRACT:
A coulometer signaling device is disclosed which indicates when a particular machine has been used for a predetermined amount of time. The device comprises a mercury coulometer which includes an electrolyte whose color changes when the mercury deposited on the anode of the coulometer has been depleted. The end of the tube near the coulometer is somewhat enlarged and a lens is placed over this end in order to make the color change more visible.

REFERENCES:
patent: 2769929 (1956-11-01), Hardway
patent: 3431414 (1969-03-01), Bate et al.
patent: 3593048 (1971-07-01), Dunegan
patent: 3628143 (1971-12-01), Di Paola
patent: 3665308 (1972-05-01), Beusman

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