Google Patents US7069654B2 - Rotor balancingĭownload PDF Info Publication number US7069654B2 US7069654B2 US10/743,002 US74300203A US7069654B2 US 7069654 B2 US7069654 B2 US 7069654B2 US 74300203 A US74300203 A US 74300203A US 7069654 B2 US7069654 B2 US 7069654B2 Authority US United States Prior art keywords rotor offset centre machined axis Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.