Food or edible material: processes – compositions – and products – Product with defined indicating means – e.g. – indicia – etc. – Temperature responsive
Patent
1989-12-11
1991-07-23
Weinstein, Steven
Food or edible material: processes, compositions, and products
Product with defined indicating means, e.g., indicia, etc.
Temperature responsive
116218, G01K 1106
Patent
active
050342339
ABSTRACT:
A device which will indicate whether thawing of a frozen item has occurred. The invention consists of a housing containing an internal cavity which is visible through a transparent section of the outside housing wall. A frozen plug is visible within said cavity. Said plug may consist of pure-water-ice or ice containing additives affecting color and/or freezing temperature. Said housing may also contain a tension-loaded indication apparatus which is held in a fixed position by means of the frozen plug. Should thawing take place, the frozen plug would melt, thus allowing the tension-loaded indication apparatus to vary its position. Subsequent refreezing would not return the device to its initial condition.
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