Patent ID: 6532137
Filing Date: 2003-03-11
Classification: G11B

Abstract:
A head assembly for data storage device, comprising:a data storage media; a plurality of arms, each having a head for reading data from and writing data to the data storage media; a swing shaft for supporting the plurality of arms and defining a swing shaft axis about which the swing shaft pivots; a coil for a voice coil motor extended from the swing shaft on one side of the swing shaft axis; a counter weight set at a predetermined position on the swing shaft which is opposite the coil with respect to the swing shaft axis; and the head assembly having a populated configuration so that each of the plurality of arms has a head attached thereto and the counter weight is attached to the swing shaft, and a depopulated configuration so that only some of the plurality of arms has a head attached thereto and the counter weight is detached from the swing shaft.