Magnecomp Corporation

Other

Computer & Communications Technology Corp.

Magnecorp Corp.

Manecomp Corporation

Warren Coon

Amanullah Khan

David Wolf

Aman Khan

Robert N Summers

Gustavo Nuno

Rafael Cuevas

Carl J Carlson

Shijin Mei

Mourad D Zarouri

Daniel Vera

Wenyu Wu

Ali Pourdastan

Alejandro Koji Iwamoto

Koji Iwamoto

Thomas H Kemp

Jorge Lepe

Lionel Hopkins

Apparatus for a disk drive having an actuator controlled suspension in operative association with a disk. The suspension mounting plane datum plane and suspension datum plane diverge at an acute angle. When the suspension is subjected to use conditions including seek operations and disk-induced turbulent wind flow conditions and induce sway forces and torsion forces that produce lateral off-track motions of the slider gap, the extension of the suspension datum plane substantially through the slider center of mass minimizes sway forces, and lateral off track motion of the slider gap is minimized. Error from torsion forces is minimized by having the dimple center of curvature coincide with a horizontal plane including the slider gap and having the dimple longitudinal axis extend through the slider center of mass, so that both sway and torsion force sources of track misregistration are addressed.

Disk drive suspension with reduced off-track error

A disk drive suspension has a base portion, a spring portion, and a beam portion carrying a slider at a disk. The base portion is a laminate of two inextensible outer layers and an inner layer that is extensible in shear. Microactuators that expand or contract are attached by their opposite ends in angled or parallel relation to the respective outer layers to shift the outer layers relative to each other as a function of shearing in the inner layer to shift the slider at the disk.

Microactuated suspension with shear transmission of force

A load beam for a disk drive suspension in which the radius of the perimeter transition between the load beam portion and the load beam spring portion is increased to ensure the stress encountered when the load beam is bent from its normal range, for installation into a disk drive, for example, from a previously typical 0.002 inch to 0.010 inch, is distributed sufficiently that the load beam spring portion is subject to only elastic, not plastic deformation. Thus, the gram loads exerted by the load beam spring portion are reliably consistent.

Load beam spring portion with enhanced resistance to plastic deformation in manufacturing processes

A resin free and solder free electrical connection in a disk drive suspension interconnect is provided including an electrical connection between conductive traces of a first metal layer and a second metal layer with a conductor pin having electrical connection with the outer surfaces of each metal layer and free of any solder and resin in making the connection.

Suspension with no-solder, no-resin conductor extending through insulator-spaced metal layers

Cultivated field water is desalinated by a series of independent units that float on the water surface, taking up the saline water with a wick, evaporating the water from the wick in desalinating relation by concentrating incident solar radiation with a combination of a lenses and cooperating mirrors onto the upper end portion of the wick while the wick lower end portion is immersed in the field water, capturing the desalinated vapor resulting by condensing within the unit and returning the condensed, desalinated water to the field, and periodically renewing the wick by rinsing the salt from it at a cleaning station beyond the field.

Multi-unit, distributive, regenerable, in situ desalination method

A low stiffness, high torsion disk drive suspension having reduced gram load change after backbending includes a laminate of a metal layer, a plastic film layer and a plurality of conductors, a spring portion, a base portion and a distal portion with contiguous discontinuities that reduce the vertical stiffness of the suspension with only a low reduction in torsion, and that limit gram load changes by preventing stretching of the plastic film that would otherwise accompany backbending of the spring portion of the suspension.

Low stiffness, high torsion suspension for disk drives

ESD is prevented in a disk drive suspension electrical interconnect having plural pairs of conductive traces supported by an insulative film by disposing a material having a lower resistivity than the insulative film but not so low that the conductive traces are shunted. The material is disposed in or on the film and is to be connected to ground.

ESD protected suspension interconnect

A low stiffness, high torsion disk drive suspension having reduced gram load change after backbending and method includes a laminate of a plastic film layer and a plurality of conductors in which the spring portion, the base portion and/or the distal portion are provided with contiguous discontinuities that reduce the vertical stiffness of the suspension with only a low reduction in torsion, and that limit gram load changes by preventing stretching of the plastic film that would otherwise accompany backbending of the suspension.

Low stiffness, high torsion suspension

A novel flexure or interconnect for a disk drive suspension having a locally different thickness and/or width of insulative layer and a locally different thickness, width and/or relative spacing in its trace conductors to vary capacitance and circuit impedance values accordingly to locally desirable different and optimum values for the type of circuit and the suspension features.

Trace flexure suspension with differential insulator and trace structures for locally tailoring impedance

A microactuator suspension assembly has a load beam structure with at least three layers of material in certain portions of the proximal area between the baseplate area and the spring area, the first and third layers comprising substantially inextensible metal, the second layer comprising extensible plastic, the plastic layer operating in shear when driven by an electrodynamically variable microactuator to make a microadjustment of the suspension.

A low cost, simplified disk drive suspension not requiring an actuator arm for movement is provided comprising a load beam having at its proximate end attachment structure comprising a mounting hole fixed to an actuator spindle and at its distal end terminal structure adapted to support a slider overlying a disk and having a lift cam and limiters, and a conductor supported by the load beam, the conductor comprising a flexible conductive laminate metal layer flexure and limiter at the load beam terminal structure, undue movement of the flexure and flexure tongue being controlled by the limiters.

Actuator-arm free, flexible circuit suspension assembly for disk drives

A disk drive suspension having a minimized 2torsion characteristic includes a load beam having a given side profile and centerline rotation axis. The load beam has a base portion, a spring portion, and a beam portion. The beam portion has a distal section supporting a flexure having a tongue. There is a dimple between the tongue and the load beam, and a slider carried on the tongue for gimballing movement about the dimple. The dimple has a given height that displaces said beam portion so that the beam portion side profile is biased from said centerline rotation axis. A bend is placed in the beam portion distal section of a size and location to offset the displacement of the beam portion by the dimple while maintaining the beam portion before said distal section straight. Thus, the beam portion side profile registers with the centerline rotation axis and its 2torsion characteristic is minimized.

Suspension with minimized second torsion gain

A unitary load beam for a disk drive suspension in which the radius of the perimeter transition between the load beam portion and the load beam spring portion is increased to ensure the stress encountered when the load beam is bent from its normal range, for installation into a disk drive, for example, from a previously typical 0.002 inch to 0.010 inch, is distributed sufficiently that the load beam spring portion is subject to only elastic, not plastic deformation. Thus, the gram loads exerted by the load beam spring portion are reliably consistent.

Load beam with enhanced resistance to plastic deformation in manufacturing processes

A low stiffness, high torsion disk drive suspension having reduced gram load change after backbending and method includes a laminate of a metal layer, a plastic film layer and a plurality of conductors in which the spring portion, the base portion and/or the distal portion are provided with contiguous discontinuities that reduce the vertical stiffness of the suspension with only a low reduction in torsion, and that limit gram load changes by preventing stretching of the plastic film that would otherwise accompany backbending of the suspension.

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Temecula, CA, United States of America

Warren Coon