Patent ID: 7517178
Filing Date: 2009-04-14
Classification: B27G,Y10T

Abstract:
1. A cutting blade adapted to prevent radially outward movement after installation in a recess of a rotary cutter head, the recess defining a recess bottom, the size of the recess being controlled by a clamp having a tab, the cutting blade comprising: a base end, an outer end, and a pair of opposed side ends extending transversely between the base end and the outer end; a leading face parallel to a trailing face, the leading and trailing faces extending transversely between opposed side ends and transversely between the base end and outer end, the leading face intersecting the outer end to form a cutting edge; a slot adapted to receive the tab, the slot extending laterally between opposed side ends, the slot including a slot bottom and inner and outer walls on opposed sides of the slot bottom; means between the inner wall of the slot and the base end for ensuring clamping of the cutting blade in a radially inward direction when in use with the clamp such that the base end and the recess bottom are engaged and radially outward movement of the cutting blade is prevented after the cutting blade has been installed within the recess of the rotary cutter head; a relative dimensional relationship between the slot and the tab, wherein the slot has a greater dimension than the tab creating a gap between the slot and the tab when the cutting blade is clamped into the rotary cutter head, the greater dimension ensuing that a radially inward force is applied upon the cutting blade; and wherein the slot and the tab extend over an entire width of the cutting blade between opposed side ends when in use.