Flat cutter blade for cutting head has first cutting edge and adjacent second cutting edge with rounded region between the two cutting edges, can have two, three or four cutting edges

摘要

The cutter blade (3-5) has a first cutting edge (32,42,52) and an adjacent second cutting edge (31,41,51) with a rounded region (33,43,53) between the two cutting edges. The blade can have a total of two, three or four cutting edges. The first and second cutting edges and the rounded region lie on an arc of a circle. Independent claims are also included for the following: a disc-shaped cutter head and an electric hand tool, especially an angle grinder.