Keith E Carlson

US Patent:

7158350, Jan 2, 2007

Filed:

Nov 5, 2002

Appl. No.:

10/288395

Inventors:

Keith W. Carlson - Hutchinson MN, US
Dennis A. Boismier - Shorewood MN, US
Galen D. Houk - Hutchinson MN, US
Craig A. Leabch - Saint Cloud MN, US

Assignee:

Hutchinson Technology Incorporated - Hutchinson MN

International Classification:

G11B 5/48

US Classification:

3602663

Abstract:

Apparatus and method for grounding a flexure of a head suspension assembly to a moving support such as an actuator arm or an E block close to a preamplifier, write driver or other wiring such as a flexible circuit located on the moving support in a disk drive assembly, including connecting a metal substrate layer of the flexure to a ground on the moving support closely adjacent the preamplifier or flexible circuit to minimize ground loop interference with signals on the traces. The invention includes a variety of arrangements to secure the metal substrate layer to the moving support.

US Patent:

7710687, May 4, 2010

Filed:

Sep 13, 2006

Appl. No.:

11/531468

Inventors:

Keith W. Carlson - Hutchinson MN, US
Valerie J. Webber - Buffalo Lake MN, US

Assignee:

Hutchinson Technology Incorporated - Hutchinson MN

International Classification:

G11B 5/48

US Classification:

3602443

Abstract:

An integrated lead flexure or suspension including an insulating layer, a plurality of traces on the insulating layer and a stainless steel base layer on the side of the insulating layer opposite the traces. The traces are free of a conductive shield layer on the side opposite the insulating layer. One or more voids extend through the stainless steel layer below the traces. The voids are filled with a high conductivity metal layer.