Patent ID: 7119992
Filing Date: 2006-10-10
Classification: G11B

Abstract:
1. A disk drive system comprising: an actuator having a head arm mounted with a slider having a head element for recording data in a disk recording medium and reading the recorded data; means for unloading said head arm to a parking position and loading said head arm from said parking position such that said slider comes close to a surface of a disk recording medium; an inertial arm rotatably supported for engaging said actuator when said head arm is in or near said parking position and releasing the engagement with said actuator when said head arm is in or near a position close to a disk recording medium; and energizing means for holding a position of said inertial arm in a position where the engagement with said actuator is released, wherein said actuator and said inertial arm have balanced mass with respect to respective centers of rotation, and said actuator and said inertial arm have a ratio of inertia of 1.7 to 1 and a ratio of distances to a meshing point of 1.7 to 1.