Patent ID: 6250850
Filing Date: 2001-06-26
Classification: E02D,E04C

Abstract:
A retaining wall block for constructing a multiple course retaining wall comprising:a top surface;spaced apart front and back surfaces extending from the top surface;spaced apart side surfaces extending from the top surface and spanning from the front surface to the back surface;a bottom surface spaced apart from the top surface having a predetermined surface area and integral with the front, back and side surfaces, and having a concave portion rearwardly displaced from the front surface, the concave portion shaped to substantially form a segment of a sphere having a generally circular edge defined on said bottom surface, the concave portion creating a cavity between the bottom surface of the block and a top surface of a lower course of blocks when the block is placed on the top surface of the lower course of blocks, the cavity allowing dirt and other foreign matter to exist between successive courses of blocks without creating instability between the block and the lower course of blocks; and the top, bottom, front, back and side surfaces defining the block body, and said body being of the same, uniform material composition throughout.