Patent ID: 7540091
Filing Date: 2009-06-02
Classification: A62B,B23D,B26B,B28D,Y10T

Abstract:
1. A method of reconfiguring a cutting head for a hand-held cutting tool, the method comprising: providing a cutting head having a casing configured to carry first and second blades and a reciprocating cutting member which reciprocates between the first and second blades about a rotation axis located at least approximately at a midsection of the first and second blades, the individual first and second cutting blades including a body having spaced-apart first and second shear edges, a first mount mating with the casing, and a second mount configured to mate with the casing, the individual first and second shear edges including a first section and a second section different than the first section, the first section of the first shear edge being positioned forward of the rotation axis at a cutting zone adjacent to the reciprocating cutting member for cooperation therewith and shearing a workpiece, the second sections of the first and second shear edges being positioned aft of the rotation axis and aft the cutting zone; detaching the first mount of the first blade from the casing; turning the body of the first blade; and attaching the second mount of the first blade to the casing to attach the first blade to the casing, wherein the second section of the second shear edge of the first blade is positioned forward of the rotation axis and in the cutting zone adjacent to the reciprocating cutting member for shearing the workpiece and the first sections of the first and second second shear edges of the first blade are positioned aft of the rotation axis and aft of the cutting zone.