SOIL-LOOSENING TOOL Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: loosening tool comprises a shank in the form of a set of flexible rectangular-section plates installed in a spaced relation to the longitudinal plane of symmetry of the tool, and a chisel on the lower portion of the shank, made in the form of a rod and fixed in an inclined hole inside the shank. The upper and lower parts of flexible plates mate with one another. The front parts of flexible plates in a mirror-like pattern have blades with cutting edge on inclined and vertical portion of shanks while the middle part of the flexible plates is convex in front in the shape of parabola branches (diametrically-directed cylindrical paraboloids). The points of contact of flexible plates are mating with the shank convexities along the arc of the circumference. EFFECT: improved design. 2 dwg, 1 tbl