Patent ID: 9307695
Filing Date: 2016-04-12
CPC Classification: A01D

Claim Text:
1. A cutter blade for a mower which is driven to rotate about a vertical axis inside a housing, the cutter blade comprising: a blade body; a blade portion formed in the blade body; and a pair of wind generating portions, each of the wind generating portions being formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portions being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof; wherein at an outer end portion of the wind generating portions in the longitudinal direction of the blade body, there are formed a plurality of recessed portions, each of the recessed portions being recessed more inwards than the remaining portion of the outer end portion; wherein there are formed protruding portions at respective areas between and across adjacent recessed portions; and wherein the recessed portion in one of the pair of wind generating portions is formed at a position orthogonal to a position of the protruding portion in the other of the pair of wind generating portions across the vertical axis of the cutter blade.