WEIGHT COMPENSATING METHOD AND APPARATUS

摘要

A counterbalancing apparatus for dynamically balancing an out-of-balance rotating member. A first series of weights having identical size and weight are mounted to freely move within a first groove or race when the apparatus is rotating after being mounted to a shaft or other rotatable member. A second series of weights having identical size and weight are similarly mounted to freely move within a second groove or race located inside of the first groove. The first series of weights is different in size and weight from the second series of weights.