Patent ID: 6923630
Filing Date: 2005-08-02
Classification: B28B,E01C

Abstract:
1. An apparatus for impressing a three-dimensional pattern into a wet concrete wall formed by a slip form, comprising: an impression roller having an axis of rotation and an outer periphery impressed with a three-dimensional pattern; means for supporting said roller for rotation about said axis with said outer periphery being partially depressed into a first exposed side surface of the wet concrete wall emerging from the slip form, said axis of said roller being maintained substantially parallel to the first exposed surface; means for supporting said roller for advancement along the concrete wall, whereby surface engagement between said outer periphery of said impression roller and the first exposed surface of the wet concrete cause said roller to rotate and impress successive portions of the wet concrete with successive portions of said three-dimensional pattern; and an opposing element displaced to engage a second exposed side surface opposite said first exposed side surface of said wall.