Hutchinson Technology Corporation

Seagate Technology Incorporated

James Roger Mahoney

Mark R Christianson

Brent D Lien

Jeffry S Bennin

Shane J Van Sloun

Stevenson J Marek

Mark A Schmidt

David A Ziegler

Brandon K Fraser

Ryan A Jurgenson

Sandeepan Bhattacharya

Ravishankar Ajjanagadde Shivarama

Roger Alan Resh

Kevin Jon Schulz

Joseph H Sassine

James A Fisher

Jagdish L Agrawal

Thomas K Christensen

Thomas K Christiansen

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.

Disc flutter compensating suspension

A method of making a multi-piece head suspension for a rigid disk drive. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.

Method of forming a head suspension with an integral boss tower

A suspension including a load beam, a flex gimbal, and a displacement limiter. The load beam includes a distal end having a dimple extending downwardly therefrom and an aperture. The flex gimbal includes a base dielectric layer and a plurality of electrical conductors coupled to the dielectric layer. The dielectric layer includes a top side that is attached to a bottom side load beam at a first location. The displacement limiter is attached to the dielectric layer and includes a limiter member having a first portion extending through the aperture of the load beam and a second portion extending over a top surface of the load beam. Displacement of the flex gimbal relative to the load beam is limited by the second limiter portion.

Head suspension having a displacement limiter

A head gimbal assembly has a gimbal with a limiter formed from a sheet prior to attachment to the load beam structure. The limiter has a pair of flange extensions, each flange extension having an arm extension. The flange extensions and the arm extension are bent around a tip of the load beam to interleave the limiter around the load beam. The arm extensions have a narrower width than a width of the flange extensions, providing room for adjustment to the pitch and roll attitude of the system after assembly.

Head gimbal assembly high performance shock limiter

A head suspension assembly in a rigid disk drive having a load beam with a mounting region, a rigid region and a spring region located between the mounting region and rigid region. The mounting region includes an integral boss tower having attachment features. A method of making a multi-piece head suspension for a rigid disk drive is also disclosed. The method includes providing a first layer including a mounting region with an integral boss tower attached to a stiffener by one or more positioning tabs; attaching a second layer including a spring region to an interface between the mounting region and the stiffener; attaching a flexure to the stiffener; and removing the positioning tabs. The flexure can optionally be a portion of the second layer.

Intergral base plate with boss tower

A gimbal and corresponding head suspension assembly including a planar flexure platform having integral static attitude compensation, nominal angle adjustment, and load point etched or etched-formed raised features. The head suspension assembly can also include a load point cover with etched or etched-formed load point features. The etched features are manufactured by masking a pivot point at about the intersection of the roll axis and the pitch axis, thus leaving a raised protuberance having either a pivot point or a load point feature. The process of manufacturing etched-formed features includes etching protuberances and slots. A punch press is then applied to the protuberances. The slots help control the formation of raised domes and provide additional static compensation and nominal angle adjustment pivoting clearance.

Method of making integral static compensation features

Gimballing flexure with static compensation and load print intregal

A magnetic head suspension for attachment to a rigid arm comprises a spring load beam element and a flexure means joined to the distal end of the load beam element for supporting a read/write head. The spring load beam element portion is formed from material generally having a first thickness. The load beam has a central region in the spring region which has a second thickness, generally thinner than the first thickness. The second thickness may be formed by the partial or complete removal of load beam material in the central region. First thickness legs bounding the central region may be formed to be of widest width at the location proximal to the rigid section of the load beam, of medium width at the location distal to the rigid section of the load beam, and of narrowest width between the two ends of each leg, thus providing a load beam of good lateral stiffness and spring rate characteristics. Other types of areas may be formed by varying partial or complete removal of load beam material in the central region. Provision of such areas of reduced thickness in the spring region reduces the load beam spring rate, increases load beam spring natural frequency and the sway mode frequency, and provides a load beam spring area with minimum stress.

Load beam having areas of varying thickness in the spring region formed

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Stewart, MN, United States of America

James Roger Mahoney