Circular saw blade, has upper tooth designed as trapezoidal tooth and lower tooth designed as flat tooth, where blade has unequal tooth depths and uneven tooth pitches, and flat tooth has breadth larger than breadth of trapezoidal tooth

摘要

The blade has an upper tooth designed as a trapezoidal tooth (6) and provided on an upper tooth body and a lower tooth designed as a flat tooth (5). The blade has unequal tooth depths and uneven tooth pitches, where the tooth pitch before a flat tooth is small. The flat tooth has a breadth larger than the breadth of a trapezoidal tooth. The blade has a lateral trapezoidal angle greater than or equal to 50 degrees.