Patent · US Active

Head suspension assembly having PZT damper

US10276195B2 · kind B2 · utility

2Cited by

6References

21Claims

0Family size

Assignee

Magnecomp Corporation · US

Inventors

Kuen Chee Ee · Chino, US
Long Zhang · Murrieta, US
Keith A. Vanderlee · Austin, US

Key dates

Filing date	Feb 12, 2018
Grant date	Apr 30, 2019
Priority date	—
Expiry date	Feb 12, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG11B33/08
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In a gimbal dual stage actuated (GSA) suspension for a disk drive, a viscoelastic damper is disposed between and adhered to the suspension's PZT microactuator and the flexure trace gimbal. The damper is dispensed in fluid form onto the trace gimbal during assembly of the suspension, the PZT is placed onto the damper, and the damper is then hardened leaving it adhered to both the PZT and the trace gimbal. The damper reduces peaks in the frequency response of the PZT actuation, thus allowing higher bandwidth of the servo control loop and increasing the effective read and write speeds for the suspension.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.