Patent ID: 8922068

Claim:
A primary for a linear drive motor: a stage comprising: a first stack being monolithically formed from a steel and having an inner tooth and an outer tooth being monolithically formed in the first stack, the inner tooth being spaced from the outer tooth in a manner such that the inner and outer teeth form a generally u-shaped cross-section for the first stack, the first stack having a bearing mount; a second stack being monolithically formed from a steel and having an inner tooth and an outer tooth being monolithically formed in the second stack, the inner tooth being spaced from the outer tooth in a manner such that the inner and outer teeth form a generally u-shaped cross-section for the second stack, the second stack having a bearing mount; a magnet disposed between the first and second stacks; a coil wrapped between the first and second stacks with an inner diameter portion of the coil circumscribing the inner teeth of the first and the second stacks and an outer diameter portion of the coil adjacent the outer teeth of the first and the second stacks; and a bearing operatively mounted to at least one of the bearing mounts of the first and second stacks.