- 专利标题: VISUAL AND ELECTRONICALLY READABLE TEMPERATURE INDICATOR
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申请号: US15415301申请日: 2017-01-25
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公开(公告)号: US20170211992A1公开(公告)日: 2017-07-27
- 发明人: Steve Yeager , Justine Gaston , Carl M. Lentz , Randall Lane
- 申请人: Steve Yeager , Justine Gaston , Carl M. Lentz , Randall Lane
- 申请人地址: US OH Dayton
- 专利权人: KLT Technologies
- 当前专利权人: KLT Technologies
- 当前专利权人地址: US OH Dayton
- 主分类号: G01K7/20
- IPC分类号: G01K7/20 ; G01K11/12 ; G01K11/06
摘要:
Visual and electronically readable temperature indicators and methods of making the same have an electric circuit with a microchip and a bridge within the circuit, and a facing material over the electric circuit. The bridge includes either a single layer or multiple layers that include a conductive material, a phase change material having a pre-selected melt temperature, a binder, a first colorant that is soluble in the phase change material and/or a second colorant that is a special effect pigment. In operation, at temperatures below the pre-selected melt temperature, the bridge is electrically conductive, and at a temperature at or above the pre-selected melt temperature, the phase change material melts and dilutes the conductive material, so that the bridge is electrically non-conductive, and a color change occurs that is visible to the user through the facing material such as through a transparent window or in an absorbent material.
公开/授权文献
- US10401232B2 Visual and electronically readable temperature indicator 公开/授权日:2019-09-03
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