Patent ID: 7784557

Claim:
A soil aerator, comprising: a frame connectable to a vehicle which transmits a pulling force from the vehicle to the frame; and a soil aeration apparatus mounted to the frame such that the frame transports the soil aeration apparatus over a ground surface when the frame is connected to the vehicle, the soil aeration apparatus having a set of arcuate aeration blades attached to a tine-holder shaft; wherein the arcuate aeration blades penetrate the ground surface at substantially the same time to form aeration pockets when the frame transports the soil aeration apparatus over the ground surface, wherein each arcuate aeration blade initially penetrates the ground so that a convex cutting edge of the arcuate aeration blade is positioned generally below a complementary concave cutting edge of the arcuate aeration blade, and wherein the arcuate aeration blades penetrate the ground at a predetermined orientation so as to produce a downward force urging the frame toward the ground surface.