Ravishankar A Shivarama

US Patent:

7542239, Jun 2, 2009

Filed:

Nov 21, 2005

Appl. No.:

11/284200

Inventors:

Roger A. Resh - Prior Lake MN, US
James R. Mahoney - Stewart MN, US
Sandeepan Bhattacharya - Eagan MN, US
Jagdish L. Agrawal - Chaska MN, US
Ravishankar A. Shivarama - Bloomington MN, US
James A. Fisher - Shakopee MN, US

Assignee:

Seagate Technology, LLC - Scotts Valley CA

International Classification:

G11B 5/58
G11B 21/20

US Classification:

3602443, 3602448

Abstract:

A suspension is provided, which has a base, a load beam and a hinge structure. The hinge structure and at least one of the base and the load beam are formed of a single continuous piece of multiple layer laminate material, which includes first and second layers. The hinge structure includes a first beam formed by the first layer and a second beam formed by the second layer. The first layer is absent along the second beam and the second layer is absent along the first beam such that the first and second beams are vertically offset from one another. The first and second beams extend between the base and the load beam.

US Patent:

7804656, Sep 28, 2010

Filed:

Feb 6, 2008

Appl. No.:

12/026683

Inventors:

Kevin Arthur Gomez - Wexford PA, US
William Albert Challener - Sewickley PA, US
Ravishankar Ajjanagadde Shivarama - Bloomington MN, US
Patrick Breckow Chu - Wexford PA, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 7/135
G11B 5/60

US Classification:

360 59, 369300, 36911227, 720662

Abstract:

An apparatus includes a load beam, a slider coupled to the load beam by a gimbal assembly and including an optical transducer, an optical fiber for transmitting light directly toward the transducer, and a mounting structure for adjusting the position of an end of the optical fiber. Data storage devices that include the apparatus are also included.

US Patent:

20050265139, Dec 1, 2005

Filed:

May 26, 2004

Appl. No.:

10/854564

Inventors:

Kevin Gomez - Wexford PA, US
William Challener - Sewickley PA, US
Ravishankar Shivarama - Bloomington MN, US
Patrick Chu - Wexford PA, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B007/00

US Classification:

369044140, 369044190

Abstract:

A suspension arm for an optical transducer comprises a load beam, a slider coupled to the load beam by a gimbal assembly and including an optical transducer positioned adjacent to an end of the slider facing a pivot point of the suspension arm, and an optical fiber for transmitting light toward the transducer, wherein an end of the optical fiber is positioned adjacent to the transducer such that light emitted from the fiber passes directly to the transducer. Disc drives that include the suspension arm, and a method of transmitting light to an optical transducer, are also included.

US Patent:

20090207528, Aug 20, 2009

Filed:

Mar 4, 2009

Appl. No.:

12/397889

Inventors:

Roger A. Resh - Prior Lake MN, US
James R. Mahoney - Stewart MN, US
Sandeepan Bhattacharya - Eagan MN, US
Jagdish L. Agrawal - Chaska MN, US
Ravishankar A. Shivarama - Bloomington MN, US
James A. Fisher - Shakopee MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/48

US Classification:

3602443, G9B 5147

Abstract:

A suspension is provided, which has proximal and distal ends and a longitudinal axis extending from the proximal end toward the distal end. A rotating hinge rotates the distal end about the longitudinal axis in response to vertical motion of the distal end relative to the proximal end. In one example, the suspension includes a preformed twist deformation, which rotates the distal end about the longitudinal axis relative to the proximal end axis in a direction opposite to rotation by the rotating hinge, in response to the vertical motion.

US Patent:

20130286800, Oct 31, 2013

Filed:

Mar 15, 2013

Appl. No.:

13/839342

Inventors:

Ravishankar Ajjanagadde Shivarama - Eden Prairie MN, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G11B 13/04

US Classification:

369 1302

Abstract:

A flex circuit including a dual sided interconnect structure to connect electrical components on a head or suspension assembly to head circuitry is described. The dual sided interconnect structure described has application for providing an electrical connection to one or more transducer elements on a slider and one or more elements of a heat assisted magnetic recording HAMR unit. In an illustrated embodiment, a flexible structure or insulating base layer includes one or more slider and heat assisted magnetic recording traces coupled to one or more slider or HAMR bond pads on an interconnect portion. As disclosed, the slider bond pads are on the obverse side of the flexible structure and the HAMR bond pads include a reverse side bonding surface to form reverse side bond pads to connect to one or more electrical or heating elements on the HAMR unit.

US Patent:

20190189151, Jun 20, 2019

Filed:

Dec 20, 2017

Appl. No.:

15/848312

Inventors:

- Cupertino CA, US
Bradley J. Ver Meer - Savage MN, US
Ravishankar Ajjanagadde Shivarama - Eden Prairie MN, US

International Classification:

G11B 5/48

Abstract:

A slider adhesion system can be practiced in a data storage device with a flexure suspended from a load beam and a slider mounted to a gimbal tongue of the flexure. The slider can be aligned with an aperture of the gimbal tongue and attached to an adhesion feature of the gimbal tongue with an adhesive layer. The adhesion feature may consist of a plurality of cantilevered tabs extending into the aperture of the gimbal tongue.

US Patent:

20180226089, Aug 9, 2018

Filed:

Apr 5, 2018

Appl. No.:

15/946215

Inventors:

- Cupertino CA, US
Ravishankar Shivarama - Eden Prairie MN, US

International Classification:

G11B 5/48

Abstract:

A method for assembling a head-gimbal assembly of a hard disk drive, the method including the steps of dispensing adhesive onto a top surface of a gimbal tongue, wherein the gimbal tongue is positioned adjacent to a load beam with a dimple extending from its top surface, and wherein the gimbal tongue is configured with at least one support feature that inhibits its deformation toward the dimple when subjected to downward pressure with respect to the dimple; positioning a slider on which a magnetic head is mounted adjacent to the top surface of the gimbal tongue; and pressing the slider onto the adhesive and toward the dimple of the load beam.

US Patent:

20180108374, Apr 19, 2018

Filed:

Oct 18, 2016

Appl. No.:

15/296510

Inventors:

- Cupertino CA, US
Ravishankar Ajjanagadde Shivarama - Eden Prairie MN, US

International Classification:

G11B 5/48

Abstract:

A slider for use in a disk drive, the slider including a slider body having a leading surface and an opposite trailing surface, wherein the trailing surface includes portions with extensions or depressions. The extensions or depressions include a slider bond pad.