| 摘要 |
<p>A saw blade includes the: (1) provision of a trapezial tooth between every two triangular teeth, the trapezial tooth having two opposite sides which extend towards one another at a top end, a distal bottom end opposite the top end and two opposite trapezial faces; (2) provision of cutting edges by forming two inclined faces which converge from one of the trapezial faces towards the other one of the trapezial faces; (3) provision of a cut at a rear one of the inclined faces which cut forms an inverted "L" shape that extends vertically to a predetermined height from the distal bottom end; and (4) the grinding of the distal bottom end to form a triangular tip face which extends inclinedly from a front section to a rear section of the trapezoid tooth.</p> |
