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US 9,410,852 B2Granted
Freeze indicator
AssigneesIntellectual Discovery Co., Ltd., Inditechkorea Co., Ltd
InventorsJihoon Park, Gilnam Hong
Life of this patent
Estimating the term…
Abstract
Provided is a freeze indicator, and more particularly, to a freeze indicator capable of easily confirming whether products are exposed to a freezing temperature or less using a development medium member containing a development material having hydrophobic property and moisture, and using diffusion characteristics of the development material into a development medium only when the moisture is frozen at a freezing temperature or less of the moisture.
Claims10
A freeze indicator comprising:
- a lower substrate;
- a development material member disposed on the lower substrate;
- a development medium member spaced apart from the development material member, disposed on the lower substrate, and containing moisture;
- and
- an upper cover attached to the lower substrate, and configured to block the development material member and the development medium member from the outside,
- wherein, when the freeze indicator starts an operation thereof, a development material is disposed around the development medium member, and the development material is diffused into the development medium member when exposed to a freezing temperature or less;
- wherein the upper cover comprises a convex section that forms a first receiving section configured to accommodate the development material member, and wherein to operate the freeze indicator, a pressure is applied from the outside to rupture the development material member through the convex section;
- and
- wherein the upper cover further comprises first and second projections protruding along an outer circumferential surface of the development medium member, and wherein a concave section formed between the first and second projections is configured to expand to accommodate the development material after the freeze indicator is operated.
6 more elements
A freeze indicator comprising:
- a lower substrate;
- a development material member disposed on the lower substrate;
- a development medium member spaced apart from the development material member, disposed on the lower substrate, and containing moisture;
- and
- an upper cover attached to the lower substrate and configured to block the development material member and the development medium member from the outside,
- wherein, when the freeze indicator starts an operation thereof, a development material is disposed around the development medium member, and the development material is diffused into the development medium member when exposed to a freezing temperature or less;
- wherein the upper cover comprises a convex section that forms a first receiving section configured to accommodate the development material member, and wherein to operate the freeze indicator, a pressure is applied from the outside to rupture the development material member through the convex section;
- and
- wherein the upper cover further comprises an expansion section formed of an expandable material along the outer circumferential surface of the development medium member, and wherein the expansion section is configured to expand to accommodate the development material after the freeze indicator is operated.
6 more elements
Dependencies are inferred from the claim text.