Device for detecting the defrosting of frozen products

Details Device for detecting the defrosting of frozen products Device for detecting the defrosting of frozen products

1979-11-08

1981-07-28

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

116219, G01K 1112

Patent

active

042803616

ABSTRACT:
A process for detecting and signaling the defrosting, even temporary, of frozen products which consist in providing a detecting device consisting of a closed container having therein a colorless and a colored element which, under frozen conditions, are separate from each other but will admix and form a single colored mixture on defrosting. The presence of said single mixture indicates that defrosting has taken place. The device is also disclosed and claimed.

REFERENCES:
patent: 2716065 (1955-08-01), Beckett et al.
patent: 3177843 (1965-04-01), Geocaris
patent: 3312079 (1967-04-01), Siebert
patent: 3702077 (1972-11-01), Szabo
patent: 3958528 (1976-05-01), Hill
patent: 3967579 (1976-07-01), Seiter
patent: 4022149 (1977-05-01), Berger
patent: 4144834 (1979-03-01), Donegan
patent: 4145918 (1979-03-01), Couch et al.
patent: 4191125 (1980-03-01), Johnson

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