Magnecomp/TDK Assigned Patent

Magnecomp Corporation, Murrieta, CA, has been assigned a patent (9,892,748) developed by Ee, Kuen Chee, Chino, CA, Zhang, Long, Murrieta, CA, and Vanderlee, Keith A., Austin, TX, for a “head suspension assembly having PZT damper with non-uniform thickness.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “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.”

The patent application was filed on December 12, 2016 (15/376,619).