US Patent 7191651 Vehicle wheel balancer system with projection display

A wheel balancer includes a microprocessor configured to receive data associated with a vehicle wheel rim and tire assembly imbalance from at least one sensor, and to identify optimal correction weight plane locations, as well as to present the operator with the imbalance correction weight arrangement. The microprocessor is further configured to control a projection display system disposed to project a two-dimensional image onto a surface of the vehicle wheel rim and tire assembly, to facilitate completion of an wheel imbalance correction procedure.