Device for indicating elapsed time |
|||||||
| 申请号 | JP23977888 | 申请日 | 1988-09-27 | 公开(公告)号 | JPH0288992A | 公开(公告)日 | 1990-03-29 |
| 申请人 | Nippon Kayaku Co Ltd; | 发明人 | MINOWA SHIYUUJI; | ||||
| 摘要 | PURPOSE: To allow the easy recognition of the lapse of time from a change in color by housing the laminate of a volatile liquid holding layer which contains a volatile liquid to exhibit high light transparency into a container having a freely openable/closable aperture and evaporating the liquid. CONSTITUTION: This device is constituted of the laminate 3 formed by laminating the volatile liquid holding layer 2 on an opaque base layer, the aperture 4 which evaporates the volatile liquid from the volatile liquid holding layer 2 at the controlled speed and a door 5 for starting the evaporation of the volatile liquid. This volatile liquid holding layer 2 has the property to irregularly reflect at least the external light on the surface thereof at the time of the layer 2 not contain volatile liquid and has the property that the transparency of light increases and the color of the opaque base layer 1 is visible at least partly through this layer once the volatile liquid holding layer contains liquid. A user is allowed to visually recognize the lapse of the time from the start of the evaporation of the volatile liquid on the volatile liquid holding layer 2 before the volatile liquid is substantially absent (dried) in the volatile liquid holding layer 2 as a change in the color of the indicating surface. COPYRIGHT: (C)1990,JPO&Japio |
||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈