Patent ID: 6961218

Claim:
A head stack assembly for a disk drive, the head stack assembly comprising: a body portion defining a through bore that defines a pivot axis; an actuator arm cantilevered from the body portion, the actuator arm defining a thickness, the actuator arm defining at least one through slot in the thickness thereof though which air can flow, each through slot defining a slot surface that is generally perpendicular to the pivot axis, the through slot being configured such that the actuator arm is bifurcated and defines a first and a second actuator arm tine, the first actuator arm tine being mechanically coupled to the second actuator arm tine by an intra-actuator arm spacer attached to the first and second actuator arm tines; a coil portion cantilevered from the body portion in an opposite direction from the actuator arm; and a head gimbal assembly coupled to the actuator arm.