Freeze thaw indicator

Details Freeze thaw indicator Freeze thaw indicator

1976-06-21

1978-09-19

Swisher, S. Clement

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73356, 1161145, G01K 1106

Patent

active

041144430

ABSTRACT:
An indicating device for evidencing thawing temperatures in a food storage compartment of a freezer having a container having an upper transparent portion and a lower opaque portion provided with inward projections. Colored water can be frozen in place within the opaque portion of the container and the container then set on it side in the freezer compartment. The projections hold the ice in place in the opaque portion of the container so that the extent of thawing is evidenced by the presence of water in the transparent portion of the container in the event of a rise in temperature in the freezer compartment.

REFERENCES:
patent: 3077177 (1963-02-01), Winchell
patent: 3701282 (1972-10-01), Peterson
The Merk Index; 1968, p. 811.

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