TILLAGE TOOL FOR ROTARY APPARATUS Russian patent published in 2007 - IPC A01B33/10 

FIELD: agricultural engineering, in particular, soil tillage equipment.

SUBSTANCE: tillage tool has attachment part and working part with front and rear ribs and working surfaces positioned at an acute angle relative to surface of rotation of working tool. Working surfaces near front rib are formed wavy, with maximal spread on blade line of front rib and continuously reduced spread toward rear rib. Said line is formed as sign variable or zigzag-shaped curved line. Spread of sign-variable curved line of blade is reducing from end of working part to attachment part. Portion of zone adjoining end of working part and rear rib is deflected from surface arranged higher than said portion along rear rib and is directed to side opposite to direction of bending of working part portion positioned in front of said portion, in zone adjoining said rib. Distance between bending area points of sign variable curved line of blade exceeds spread of this line by up to three times.

EFFECT: improved quality of crumbling of soil having various physical and mechanical properties.

3 cl, 3 dwg