Patent ID: 7768746

Claim:
A head gimbal assembly comprising: a micro-actuator; a slider; and a suspension that supports the micro-actuator and the slider, the micro-actuator includes: a metal frame including a top support to support the slider, a bottom support to connect to the suspension, and a pair of side arms that interconnect the top support and the bottom support, the top support including a rotatable plate and connection arms that have a curved configuration and respectively extend from a top and bottom portion of the rotatable plate and couple to respective side arms; and a PZT element mounted to each of the side arms, wherein a first PZT element is excitable to cause a first side arm to bend towards a first direction, while a second PZT element is excitable to cause a second side arm to bend in a second direction opposite to the first direction, wherein the suspension includes a load beam having a dimple that engages and supports the rotatable plate in use.