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US 8,132,988 B2Granted
Retaining wall block
AssigneeKeystone Retaining Wall Systems, Inc.
InventorsWilliam B. Dawson, Robert A. MacDonald
Life of this patent
Estimating the term…
Abstract
A method of making a wall block and a mold box therefore. The wall block design maximizes the use of the mold box. The method produces wall blocks having a large surface area front face compared to the front face size of prior art blocks. The blocks have about one third more front surface area. This results in faster construction of walls and a faster construction sequence. The method of making the blocks makes efficient use of mold space and material, resulting in higher production yields and/or higher total daily production square footage.
Claims6
A wall block comprising:
- a front portion including opposed top and bottom surfaces, opposed side surfaces and a front surface, at least one pin hole opening onto the opposed top and bottom surfaces and at least one pin receiving cavity opening onto at least one of the opposed top and bottom surfaces, the front surface having a length equal to the distance between the side surfaces and a height equal to the distance between the top and bottom surfaces;
- and
- two legs extending from the front portion in a direction opposite the front surface and having rear surfaces, the two legs having side walls that generally converge from the front surface toward the rear surfaces of the two legs of the block, the two legs being positioned such that when a wall is formed from multiple courses of the blocks which are offset from course to course by about one half the length of the front surface the legs in each course of blocks align vertically, the length of the front surface of the block being about twice the distance from the front surface of the block to the rear surfaces of the two legs, the legs being located asymmetrically on the block, and each leg having a curvilinear back portion.
Dependencies are inferred from the claim text.