A-HOE Russian patent published in 2006 - IPC A01B35/24 

FIELD: agricultural engineering, in particular, cultivation hoes.

SUBSTANCE: A-hoe has wings provided with point and arranged so as to define V-shaped structure, and chest with shank, two openings arranged on axis of symmetry of shank whose lateral ribs are continuously joined with rear ribs of wings. Center of radius of chest and shank curvature is positioned on vertical line extending through hoe point or is declined therefrom by value not in the excess of ±8 mm. Distance between centers of openings is 50±0.5 mm. Rear ribs of wings on unfolded hoe are arranged at an angle exceeding 106 deg. Center of radius of arc of circle which joins shank and wing ribs is positioned at greater distance from point than center of rear opening. Also, width of wing end of hoe is greater than distance between its openings. Leading angle of rectilinear portion of chest does not exceed 16 deg, and angle of crumbling is 28 deg ±1 deg.

EFFECT: enhanced reliability in operation of hoe.

2 cl, 3 dwg