Reflector for warning road traffic of icing conditions
    5.
    发明授权
    Reflector for warning road traffic of icing conditions 失效
    用于警告道路交通条件的反射器

    公开(公告)号:US3604781A

    公开(公告)日:1971-09-14

    申请号:US88004669

    申请日:1969-11-26

    Applicant: BASF AG

    CPC classification number: G02B5/12 E01F9/40 G01K11/06

    Abstract: A reflector containing a light-reflecting layer, particularly for affixation to road edge marker posts, for warning traffic of the existence of icing conditions. The reflector consists of a transparent capsular container located in front of a lightreflecting layer and filled with a liquid which extends over the surface of the layer, and which as a result of a change of state loses the transparency it possesses at higher temperatures when temperatures just above the freezing point of water prevail.

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