Patent ID: 7681609

Claim:
A wood working knife for use in a wood working machine that causes the knife to advance in a cutting direction, with a front side of the knife leading in the cutting direction and a rear side of the knife trailing in the cutting direction, said knife comprising: a knife body having a first cutting edge and an opposed second edge, the knife body having a rear clamping surface on the rear side and an opposed front clamping surface on the front side, the rear and front sides each terminating at the first cutting edge and the second edge; the rear clamping surface having opposed non-coplanar clamping features separated by a substantially non-load bearing middle section, the opposed clamping features and the middle section being sized and shaped such that, upon the knife body being clamped in a clamping assembly, 50% or more of a clamping force exerted by the clamping assembly on the rear clamping surface is localized towards the first cutting edge and the opposed second edge and away from the middle section.