发明名称 |
Transition collar and spacing device for use in road construction |
摘要 |
A transition collar for use in road construction comprises an annular collar member made of elastomeric materials such as rubber. It has a generally planar top surface and a central opening sized to accommodate a rigid frame structure having an access opening formed therein. The collar member has a vertical outer wall that faces the road material, which outer wall has a number of horizontally extending, spaced apart ridges formed thereon. These ridges assist in securing the collar in a road bed. Preferably the uppermost ridge is spaced below the top surface of the collar. The collar can have a number of small bumps distributed over its top surface to improve traction for vehicles. Preferably these bumps have sloping sidewalls extending about their periphery. A cushioning device is used to adjust the position of the frame structure and comprises a flat, elastomeric member with exterior dimensions corresponding to those of the frame structure. This cushioning device preferably has shallow indentations on one of its two major surfaces.
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申请公布号 |
US5536110(A) |
申请公布日期 |
1996.07.16 |
申请号 |
US19950378689 |
申请日期 |
1995.01.26 |
申请人 |
TOMPKINS, KENNETH;HERTER, ARTUR |
发明人 |
TOMPKINS, KENNETH;HERTER, ARTUR |
分类号 |
E01C9/00;E02D29/14;(IPC1-7):E02D29/14 |
主分类号 |
E01C9/00 |
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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