Patent ID: 7155811

Claim:
A method for forming a power tool, comprising: forming an electric motor having an armature; forming a plurality of winding slots on said armature; a) winding a first coil having first and second series coupled subcoils in a first plurality of said winding slots; b) winding a second coil having first and second series coupled subcoils in a second plurality of winding slots that is circumferentially offset in a first direction by one slot position from said subcoils of said first coil; c) winding a third coil having first and second series coupled subcoils in said second plurality of slots so as to completely overlap said subcoils of said second coil; d) winding a fourth coil having first and second series coupled subcoils in a third plurality of slots that is offset circumferentially in the first direction by one slot position from said second plurality of slots; and coupling ends of each of said coils to an associated commutator bar supported on said armature.