Patent ID: 6470662
Filing Date: 2002-10-29
Classification: A01D

Abstract:
A blade cutting apparatus for a rotary lawn mower, comprising:a plurality of equally spaced apart blades formed integrally with a central portion and projecting radially outward from the central portion, each of said blades having a leading edge and a trailing edge terminating at an outer end, said leading edge being curved towards the trailing edge at the outer end to define a convexly curved sharpened edge and a correspondingly curved trailing edge; each of said blades defining an elongated slot formed therein, said elongated slot having a sharpened interior edge adjacent the trailing edge, the sharpened interior edge of said slot being raised with respect to said leading edge; said central portion including a mounting hole for receiving a shaft of the rotary lawn mower; whereby upon rotation of the blade cutting apparatus, the curved sharpened edge of each of the blades and the sharpened interior edge of the elongated slot cut through grass while cut grass and debris are allowed to pass through the slot.