Time-lapse indicator or the like

Details Time-lapse indicator or the like Time-lapse indicator or the like

G - Physics

07

C

58/4.1

G07C 5/02 (2006.01)

Patent

CA 1115532

TIME-LAPSE INDICATOR OR THE LIKE Abstract of the Disclosure A time-lapse indicator in which a receptacle contains a fluid material having numerous discrete par- ticles dispersed in a liquid carrier, and a layer of ab- sorbent material in close proximity to the receptacle, the receptacle and absorbent material being separated from one another by a wall which is broken when the time period is to be determined by the indicator. The indicator nor- mally has a pair of electrodes for measuring the resistance of the fluid material after a portion of the liquid carrier has been absorbed therefrom in the absorbent material. Mechanisms for both activating and reading the indicator may be used. 1.

346823

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