| 摘要 |
<p>A blade assembly (10, 40) for use with a tilling mechanism including a first blade disk (14, 44). A second blade disk (12, 42) is coaxially mounted to rotate with the first blade disk (14, 44) and is positioned in a spaced apart generally parallel fashion relative to the first blade disk (14, 44). The first blade disk (14, 44) and the second blade disk (12, 42) are rotatable in a first direction. A first plurality of teeth (70, 74) are disposed on the first blade disk (14, 44). Each of the first plurality of teeth (70, 74) has a first leading edge (200) which extends generally radially outwardly from the first blade disk (14, 44). A second plurality of teeth (70A, 72) are disposed on the second blade disk (12, 42). Each of the second plurality of teeth (70A, 72) has a second leading edge (202) which extends generally linearly outwardly from the second blade disk (12, 42) in a direction counter to the first direction. The second leading edge (202) forms an obtuse angle as measured relative to a line extending in the first direction tangent to the second blade disk (12, 42). A second embodiment of the blade assembly is also disclosed herein. <IMAGE></p> |
