Allan D Tokuda

US Patent:

7961434, Jun 14, 2011

Filed:

Sep 20, 2007

Appl. No.:

11/901988

Inventors:

Jeffry S. Bennin - Hutchinson MN, US
Richard G. Fiedler - Hutchinson MN, US
John A. Theget - Hutchinson MN, US
Michael R. Tiller - Waconia MN, US
Allan D. Tokuda - Hutchinson MN, US

Assignee:

Hutchinson Technology Incorporated - Hutchinson MN

International Classification:

G11B 5/48

US Classification:

3602448

Abstract:

A disk drive head suspension having a leaf-type gram load spring. One embodiment of the suspension includes a base plate and a load beam. The load beam is formed from a single piece of stainless steel and includes a mounting region, a beam region, a spring region between the mounting region and beam region, and a leaf spring extending from the beam region. The mounting region of the load beam is attached to the base plate, with a proximal end portion of the leaf spring overlaying the base plate. The leaf spring can have a formed bend in the z-height direction and is forced into a loaded state before the proximal end is welded to the base plate.

US Patent:

20150162033, Jun 11, 2015

Filed:

Dec 1, 2014

Appl. No.:

14/556985

Inventors:

- Hutchinson MN, US
Allan D. Tokuda - Hutchinson MN, US

International Classification:

G11B 5/48

Abstract:

A disk drive head suspension including a load beam, a flexure on the load beam, and a load point dimple extending from the load beam toward the flexure. A constrained damper is located on the flexure and is engaged by the load point dimple. The constrained damper includes a layer of viscoelastic material on the flexure, and a metal constraining layer on the viscoelastic material. The flexure can be a co-located dual stage actuated flexure that includes a motor, and the constrained damper can be located on the motor.