Road structure – process – or apparatus – Apparatus – Rotating drum – roller or tire
Patent
1994-05-09
1995-06-06
Neuder, William P.
Road structure, process, or apparatus
Apparatus
Rotating drum, roller or tire
425385, E01C 1926
Patent
active
054216702
ABSTRACT:
A roller assembly is provided for imprinting a pattern in a malleable surface wherein a hub is formed with a cylindrical frame receives a pattern forming shell thereon. The shell is formed of a thin cylindrical tube having a smooth interior surface and a raised ridged pattern on its exterior surface corresponding to the desired pattern. The shell includes a separation crack or seam extending longitudinally along its perimeter parallel to the rotational axis of the shell, to allow the shell to expand and receive the cylindrical hub therein. Within the cylindrical shell and along opposite sides of the crack or seam, is formed a support which includes latches to close the crack. When locked, these latches cause the diameter of the shell to contract and fit snugly against the cylindrical frame of the hub. The roller further includes a shaft positioned in front of and extending across a face of the roller. This shaft supports a roll of ultra-thin plastic which is unrolled simultaneously with the roller. This sheet of plastic is formed with sufficient elasticity and sufficiently thin to allow the roller to easily press the plastic into wet concrete. The ultra-thin plastic is extremely elastic in order that it may stretch around the contact points between the ridges formed on the rolling shell, thereby providing rounded edges along each groove formed in the concrete.
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