Patent ID: 7399147

Claim:
An end mill comprising: a shank adapted to be coupled to a rotating support; at least two flutes extending helically at least partially from an end of the end mill to said shank; at least two adjacent teeth with one of said at least two flutes therebetween, extending helically from a tip to a root adjacent said shank; said teeth each including a cutting edge thereon; each of said teeth having a plurality of notches thereon; said notches grouped into regions on only a portion of each said tooth, such that each tooth has at least one region with notches thereon and at least one region which is notchless; a first one of said at least two teeth having a first notch therein, said first notch spaced a first distance from said end; a second one of said at least two teeth having a second notch therein, said second notch spaced a second distance from said end; and said first tooth being notchless at said second distance.