Time/temperature indicator

Details Time/temperature indicator Time/temperature indicator

1982-01-04

1984-12-18

Stephan, Steven L.

Thermal measuring and testing

Temperature measurement

Composite temperature-related paramenter

374102, 116217, G01K 300

Patent

active

044888228

ABSTRACT:
This invention is directed to a time/temperature indicator wherein a fluid is frozen in one compartment and subjected to the pressure of a compressible fluid through a flow control device. When the frozen fluid melts, it is forced from its compartment and the time/temperature indicator at a control rate by the compressible fluid acting through the flow controlled device.

REFERENCES:
patent: 3820499 (1974-06-01), Kliewen et al.
patent: 3965741 (1976-06-01), Wachtell et al.

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