Patent ID: 7134462
Filing Date: 2006-11-14
Classification: B27C,B27G

Abstract:
1. A rotary cutter for a wood planing machine, comprising: an elongated rotary shaft that has a fan-shaped cross-section, a center portion, and a plurality of fan-shaped vanes angularly displaced around said center portion and extending transversely and outwardly from said center portion, and that is formed with a plurality of fan-shaped grooves, each of which is defined by two adjacent ones of said fan-shaped vanes; and a plurality of elongated blades, each of which is secured to a respective one of said fan-shaped vanes within a respective one of said fan-shaped grooves; wherein each of said fan-shaped vanes has a free end that is distal from said center portion of said rotary shaft and that has an end face with a leading edge and a trailing edge opposite to said leading edge, a leading face that extends from said leading edge to said center portion and that faces in a forward direction relative to a rotational direction of said rotary shaft, and a trailing face that extends from said trailing edge to said center portion and that faces in a backward direction relative to the rotational direction of said rotary shaft, each of said blades being attached securedly to said trailing face of the respective one of said fan-shaped vanes; and wherein said leading face of each of said fan-shaped vanes and said trailing face of an adjacent one of said fan-shaped vanes converge toward said center portion of said rotary shaft so as to define a respective one of said fan-shaped grooves, and cooperatively define an angle therebetween, said angle being greater than 60 degrees and less than 120 degrees.