Thaw-indicator device
AssigneeGarnett-McKeen Chemical Corporation
InventorMerrill Garnett
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Abstract
Thaw-indicator for frozen articles including a V-shaped transparent elastomeric tube having its inner wall surfaces disposed in liquid tight interfacial engagement at the apex of the V by a removable band and defining a pair of closed liquid containers, adapted to contain freezable contrasting liquid dyes.
Claims4
An improved thaw-indicating device for frozen articles comprising an elongate transparent elastomeric tube folded into a V shaped to define first and second discrete closed end liquid containers separated by liquid tight interfacial engagement of the interior tube wall surfaces at the apex of the V, first and second liquid dyes for producing a contrasting color upon intermixture thereof selectively contained in said first and second closed end containers and means for selectively maintaining said liquid tight interfacial tube wall surface engagement temporarily at the apex of the V.
Dependencies are inferred from the claim text.