Patent ID: 8740501

Claim:
A device for ground improvement, comprising: (a) a top plate having a first surface configured for having a driving device attached thereto to provide impact thereon; (b) a plurality of vertically extending tines attached to a second surface of the top plate opposite the first surface of the top plate, and horizontally spaced from each other at upper lateral edges thereof, for being driven into a ground surface, wherein the tines have a length of at least three and a half (3.5) feet and comprise a length to spacing (L/S) ratio of greater than two (2), wherein length (L) is the length of the tines and spacing (S) is the spacing between the tines on a tine center-to-center basis; and (c) the tines being shaped, spaced, and oriented relative to each other in a manner to achieve displacement of ground material downward and radially outward.