发明名称 |
PORTABLE HIGHWAY WARNING DEVICE |
摘要 |
A portable highway warning device includes any number of elongated rumble strips each fabricated of a suitable flexible polymeric material. Embedded within each rumble strip are a plurality of laterally spaced metal plates or bars to provide ballast to each rumble strip. The metal plates or bars run transversely across the width of each rumble strip with sufficient spacing therebetween to permit each rumble strip to be rolled up lengthwise from end to end when not in use. |
申请公布号 |
PT2373847(E) |
申请公布日期 |
2016.06.17 |
申请号 |
PT20090835661T |
申请日期 |
2009.12.18 |
申请人 |
PLASTIC SAFETY SYSTEMS, INC. |
发明人 |
CHARLES M. METTLER;GREGORY H. BROWN |
分类号 |
E01F9/529 |
主分类号 |
E01F9/529 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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