Patent ID: 9401164
Filing Date: 2016-07-26
CPC Classification: G11B

Claim Text:
1. A device for measuring a gram load, comprising: a disk drive actuator clamping assembly configured to clamp down on and hold captive an actuator assembly of a disk drive, the actuator assembly comprising a plurality of head gimbal assemblies (HGA), wherein each of the plurality of HGAs comprises a slider and a suspension tab disposed away from the slider at a distal free end of the HGA; a disk simulator assembly comprising a separately-disposed bearing surface corresponding to each slider of a first set of HGAs on the actuator assembly; a load cell assembly configured to generate an output related to a force exerted by a suspension tab on the disk simulator assembly; and a head spreader assembly configured to spread the sliders of the first set of HGAs such that suspension tabs of the spread sliders face a respective one of the bearing surfaces of the disk simulator assembly at a predetermined non-zero distance therefrom, the head spreader assembly being configured to selectively release a HGA such that the suspension tab thereof contacts and bears against its corresponding bearing surface to thereby enable the load cell assembly to measure the force and to generate the output.