Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1995-01-26
1996-07-16
Neuder, William P.
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 20, 404 26, F02D 2914
Patent
active
055361102
ABSTRACT:
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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Herter Artur
Tompkins Kenneth
Fors Arne I.
Horne D. Doak
Imai Jeffrey
Lisehora James A.
Neuder William P.
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