John M Bonanti

US Patent:

62347217, May 22, 2001

Filed:

Dec 17, 1999

Appl. No.:

9/466729

Inventors:

Gregory A. Cronkhite - Fairview PA
John J. Bonanti - Fairview PA

Assignee:

Earth Solutions, Inc. - Erie PA

International Classification:

E02D 2902

US Classification:

405284

Abstract:

A hollow, L-shaped plastic block has a protrusion on a first end and a recess on the opposite end which fit together to form a retaining wall. A rod extends between openings in the protrusion and the recess to secure adjacent blocks against lateral movement. Alternating ribs and grooves are formed in two laterally extending surfaces and a horizontally extending surface to reinforce them against bulging and to provide passageways for runoff. Rebar is used to attach the blocks to the underlying and adjacent soil. A hole may be cored in an upper surface, fill selected from the group of sand, soil, rock, cement and water inserted, and the cored plug reattached using spin welding.