A wheel balancer (1) for balancing an alloy wheel (2) comprises a support housing (30) and a main shaft (36) onto which the wheel (2) is mounted. A sub-housing (35) rotatably carries the main shaft (36), imbalance forces in the main shaft (36) and their respective directions are monitored for determining...http://www.google.com.au/patents/US6244108?utm_source=gb-gplus-sharePatent US6244108 - Wheel balancer
