Patent ID: 7129614

Claim:
A strip-shaped lamella for a stator of an electrical machine, comprising a yoke region; a number of first teeth that are of one piece with said yoke region on a first side of said yoke region and having first grooves between said first teeth; second teeth that are of one piece with said yoke region and are located at a position of said first teeth on a second side of said yoke region oriented away from said first side and having second grooves between said second teeth, said second teeth having a width b 4 which corresponds to a perfectly straight portion of a groove bottom and a width b 3 which corresponds to a distance between two intersecting points, said intersecting points being determined by theoretically extending tooth flanks of said second groove so that they intersect with imaginary extensions of said groove bottom, and a ratio between the widths b 4 and b 3 is between 60% and 85%.