초록 ▼

A rotary cutting blade including an elongated body made of steel and having opposite ends, a leading edge extending from each opposite end, an upper surface, a lower surface and a cutting surface extending between the upper and lower surfaces along a portion of the leading edge, and a laser hardened

A rotary cutting blade including an elongated body made of steel and having opposite ends, a leading edge extending from each opposite end, an upper surface, a lower surface and a cutting surface extending between the upper and lower surfaces along a portion of the leading edge, and a laser hardened portion extending from an opposite end of the body along the lower surface and the leading edge, the laser hardened portion having a thickness extending toward the upper surface and to the cutting edge.

대표청구항 ▼

[ We claim:] [1.] A rotary cutting blade comprisingan elongated body made of steel and having opposite ends, a leading edge extending from one of the opposite ends, an upper surface, a lower surfaces, and a cutting surface extending between the upper and lower surfaces along a portion of the leading

[ We claim:] [1.] A rotary cutting blade comprisingan elongated body made of steel and having opposite ends, a leading edge extending from one of the opposite ends, an upper surface, a lower surfaces, and a cutting surface extending between the upper and lower surfaces along a portion of the leading edge, and a laser hardened portion extending from the one opposite end of the body along the lower surface and along the leading edge, the laser hardened portion having a thickness extending toward the upper surface and to the cutting surface, wherein the cutting surface and the lower surface intersect to define a cutting edge, and wherein the laser hardened portion has an increased thickness adjacent the cutting edge.