TILLAGE TOOL OF EQUIPMENT FOR SUBSURFACE LOOSENING Russian patent published in 2010 - IPC A01B35/20 A01B35/26 A01B39/20 

FIELD: agriculture.

SUBSTANCE: tillage tool includes a shank and flat hoes mounted on it. The working surface of the hoe has cutting and loosening parts. The working surface is made of double convex upward curvature: the negative is in cutting part and the positive is in loosening part. The generating line of the hoe working surface placed in longitudinal vertical plane passing along the hoe axis is made as smoothly conjugated segments of logarithmic spiral. The cutting edge of each hoe limb has a shape of double curvature, formed with smoothly conjugated segments of logarithmic spiral: the negative is in zone adjacent to the hoe nose, and the positive is in zone of the hoe limb.

EFFECT: such constructive implementation enables to improve the quality of soil tillage and reduce energy consumption of loosening.

5 cl, 6 dwg