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1. 发明授权

US5695284A Thaw indicator unit and method of manufacture 失效
标题翻译：解冻指示器单元和制造方法
公开(公告)号：US5695284A
公开(公告)日：1997-12-09
申请号：US695478
申请日：1996-08-12
申请人： Gary H. Waters
发明人： Gary H. Waters
IPC分类号： G01K11/06
CPC分类号： G01K11/06
摘要： A thaw indicator unit for sensing and permanently recording a thawing event experienced by a temperature sensitive food or other item, the unit having a container of transparent, non-toxic material, and having a hermetically sealed chamber containing a frozen color change medium having at least two segments of differently colored frozen aqueous compositions, the segments being juxtaposed along an interface of molecular thickness, and at least one of the segments being substantially homogeneously colored differently from at least one juxtaposed other colored segment, wherein the colorants are food grade materials, and whereby the unit when placed on, in or in close proximity to the item will record any first thawing event by way of thawing of the juxtaposed segments and intermixing thereof at least at the interface thereof to produce at least a visible section of an intermix of said compositions and having a markedly different and readily visible color from that of the juxtaposed segments.
摘要翻译：一种解冻指示器单元，用于感测并永久地记录由温度敏感的食品或其他物品所经历的解冻事件，该单元具有透明的无毒材料的容器，并且具有密封的腔室，该容器具有至少具有冷冻变色介质两段不同颜色的冷冻含水组合物，所述片段沿着分子厚度的界面并置，并且所述片段中的至少一个片段与至少一个并置的其它着色片段基本均匀地着色，其中着色剂是食品级材料，以及由此，当放置在物品上或附近物品时，该单元将通过并排的并排至少在其界面处的融合来记录任何第一解冻事件，以产生至少一个所述混合部分的混合物的可见部分并且具有与并置的塞门的明显不同且容易看得见的颜色 ts。

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