Patent ID: 6396666
Filing Date: 2002-05-28
Classification: G11B,Y10T

Abstract:
A head stack assembly comprising upper and lower head gimbal assemblies and an actuator arm, said arm having a bore and distally thereof a sloped distal face providing said arm with a relatively shorter upper arm face and a relatively longer lower arm face parallel to said upper arm face; said upper and lower head gimbal assemblies each comprising a load beam having a base and a bore within said base, said load beams being attached to respective ones of said upper and lower arm faces with their said bores being vertically registered and jointly staked to said arm bore, whereby said upper head gimbal assembly load beam is supported less by said upper arm face and said lower head gimbal assembly load beam is supported more by said lower arm face to simultaneously reduce upgramming in said upper load beam and increase upgramming in said lower load beam, whereby the net difference in upper and lower gram loads after said staking is minimized.