| 摘要 |
PURPOSE: To obtain a cutting string for a brush cutter remarkably reducing noise even at the time of fast rotation by using a cutting string with a cross section which is not point-symmetrical. CONSTITUTION: In this cutting string for the brush cutter, the cutting string with a cross section which is not point-symmetrical mounted to one tip is rotation-moved by a motor to stretch this cutting string outward nearly in a radial direction by centrifugal force to form the cutting string 1 so as to vary its cross section concerning the longitudinal axial line. |
