E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
E01C 11/00 (2006.01) B65D 90/10 (2006.01) E01C 9/00 (2006.01) E02D 29/14 (2006.01)
Patent
CA 2126900
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.
Herter Artur
Tompkins Kenneth
Gowling Lafleur Henderson Llp
Modern Recycled Rubber Products Inc.
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