Patent ID: 7485997

Claim:
A rotor assembly for mounting a rotor to a motor shaft, comprising: a rotor having a thickness, a central bore having a diameter larger than the shaft, a first axis passing through a center point of said central bore, and a second axis passing through said center point of said central bore wherein said first axis is approximately perpendicular to said second axis; a first stepped bore having a center point, said first stepped bore being adjacent to and adjoining with said central bore such that said center point of said first stepped bore is aligned with said first axis; a second stepped bore having a center point, said second stepped bore being adjacent to and adjoining with said central bore such that said center point of said second stepped bore is aligned with said second axis; a first cam fastener having a length and adapted to fit within said first stepped bore; and a second cam fastener having a length and adapted to fit within said second stepped bore; wherein said first cam fastener and said second cam fastener are rotated to clamp against the motor shaft.