Patent attributes
A retaining wall block can include a top surface and opposing bottom surface, a front surface and opposing rear surface, and first and second opposing side surfaces. A projection can extend downwardly from the bottom surface and can include a forwardly facing indexing surface oriented generally parallel with the front surface of the block. The indexing surface can be configured to engage a rearwardly facing surface of a block in a lower course of blocks. The block can also include a pair of spaced apart key slots defined in the rear surface. Each key slot can include an enlarged interlocking portion and a throat portion extending from the interlocking portion to the rear surface. An assembly can be created whereby a pair of correspondingly shaped keys of an elongate barrier member are engaged with key slots of block so as to inhibit rearward horizontal displacement of the keys within the key slots. Elongate barrier member can include a body presenting an inner surface and an outer surface and a pair of opposing ends, each opposing end defined one of the keys. The inner surface of the barrier member and the rear surface of the block can together define a core region for receiving fill material.
