发明名称 |
Flexible raised pavement marker. |
摘要 |
Raised pavement marker useful in geographic areas where snow plows are used and comprising hollow base with an open bottom and dome top, characterized by: A. base cross section being closed curved shape like cylinder; B. dome having: 1) outer surface which approximates surface of rotation of a sine wave with highest point in middle of dome; 2) dome cross section is thickest near center and thinnest at periphery; 3) at least 2 ribs projecting from surface, to protect reflector which may be cube corner reflector affixed to dome; C. material of construction which is an elastomer having Tg no greater than -50 DEG C, preferably polyurethane compound containing a lubricating polymer, such as a silicone. <IMAGE> |
申请公布号 |
EP0486168(B1) |
申请公布日期 |
1995.03.08 |
申请号 |
EP19910309789 |
申请日期 |
1991.10.23 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
MURPHY, PATRICK E.,C/O MINNESOTA MIN.AND MANUF. CO |
分类号 |
E01F9/06;E01F9/07;E01F9/08 |
主分类号 |
E01F9/06 |
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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