Electrophoretic elapsed time indicator

Details Electrophoretic elapsed time indicator Electrophoretic elapsed time indicator

1979-11-28

1982-12-21

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368239, 204299R, G04C 1760

Patent

active

043646700

ABSTRACT:
An elapsed time indicator is constructed to operate by electrophoresis wherein light colored particles suspended in an organic liquid are caused to move in a tube device by applied electric fields. The movement of the colored particles results in a visible color bar being indicative of the transit time of the particle, and providing an indication of elapsed time. Reversal of the polarity on the device results in its reuse.

REFERENCES:
patent: 3607256 (1968-07-01), Silverberg
patent: 3839857 (1974-10-01), Berets et al.
patent: 4062009 (1977-12-01), Raverdy et al.
Curtis Instrument Inc. Brochure, "Curtis Elapsed Time Indicator", 9/71.

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