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Magnecomp Corporation Patents
Assignee:
Magnecomp Corporation
Address:
Murrieta, CA
No. of patents:
121
Patents:


1 2 3










Patent Number Title Of Patent Date Issued
8570688 Electrical connections to a microactuator in a hard disk drive suspension October 29, 2013
In a disk drive suspension circuit, an electrical contact from a flexible circuit to a face of a PZT microactuator is provided by a mechanical bias to press a contact pad of the flexible circuit against the PZT surface. The mechanical bias is provided by a piece of stainless steel that i
8564909 Multilayer bond pads for hard disk drive suspensions October 22, 2013
A method is presented for creating multilayer bond pads for bonding a disk drive suspension circuit to a read-write head slider. The multilayer bond pads eliminate the need for vias to transition signals between metallization layers within a suspension circuit. The method includes the
8228642 Dual stage actuator suspension having a single microactuator and employing pseudo symmetry to ac July 24, 2012
A dual stage actuator (DSA) suspension has a single microactuator such as a PZT element on one side of central longitudinal axis of the suspension, and a pseudo symmetry structure formed or affixed on the other side of the central longitudinal axis opposite the PZT. The pseudo symmetry
8228638 Load beam having a controlled droop angle July 24, 2012
A load beam having a bent rail, a suspension that includes the load beam, and a related method for manufacturing a load beam. The method includes providing the load beam before the bent rail is formed, and coining the load beam at a location where the bend will occur in the rail.
8223460 Asymmetric load beam for improving resonance performance of hard disk drive suspension July 17, 2012
A structure for a load beam used in hard disk drive devices includes an asymmetric structure. The load beam exhibits longitudinal asymmetry (i.e., is asymmetric along its long axis) in regard to the weight distribution, but has a center of mass that lies along its longitudinal axis d
8213126 Suspension assembly with a vertically coupling actuator arm for reduced track misregistration du July 3, 2012
A support arm for use in a disc drive suspension includes an asymmetry that creates a vertical coupling in the support arm, i.e., a slight lateral movement of the support arm distal end to which a load beam is mounted in response to vibration-induced bending of the support arm. The v
8213110 Disk drive suspension having a coined baseplate July 3, 2012
A baseplate that is configured to be included in a hard disk drive suspension assembly, and a related method for manufacturing the baseplate. The baseplate having a surface that has been coined to reduce any roughness that might have existed in a portion of the surface before the sur
8189301 Wireless microactuator motor assembly for use in a hard disk drive suspension, and mechanical an May 29, 2012
A microactuator assembly for a hard disk drive head suspension has an expandable base of stainless steel sheet material defining a negative lead affixed to the negative electrode on the bottom surface of a piezoelectric element, and a piece of stainless steel sheet material defining
8149545 Low profile load beam with etched cavity for PZT microactuator April 3, 2012
A dual-stage actuator disk drive suspension load beam has a recessed cavity formed in it into which the microactuator motor is partially or completely placed. The cavity may be formed by partially etching the load beam during the same etching process that creates the load beam from a
8148791 Head gimbal assembly apparatus having an actuator mounted on a mounting plate comprising a ceram April 3, 2012
A test assembly for a disk drive suspension head gimbal assembly includes a steel mount plate and a mount sub-plate of a material such as silicon carbide having a modulus of elasticity to density ratio that is significantly higher than the ratio for stainless steel. Preferably the mo
8125741 Rotational, shear mode, piezoelectric motor integrated into a collocated, rotational, shear mode February 28, 2012
A rotational, shear mode, piezoelectric motor is integrated with a suspension, head or head gimbal assembly (HGA) into a collocated, rotational, shear mode, piezoelectric micro-actuated suspension, head or head gimbal assembly (HGA) for use in disk drives and disk drive manufacturing
8107198 Pitch moment-balanced gimbal for a disk drive suspension January 31, 2012
In a disk drive suspension, a gimbal is longitudinally moment-balanced about the dimple to improve shock performance by adding weight to one side of the gimbal and/or by removing weight from the other side of the gimbal, such that when the suspension experiences an operational shock
8089731 Bend-down tab for outrigger lead support in a disk drive suspension January 3, 2012
A disk drive suspension with a bend-down tab which supports an outrigger lead. The bend-down tab extends laterally to the suspension and away from the slider, and can include tabs which are narrower than the electrical lead. The depth of the tab can be at least the depth of the outrigger
8085506 Disk drive gimbal having a stable pitch static attitude and related method of manufacture December 27, 2011
A gimbal, a disk drive suspension that includes the gimbal, and a related method of manufacture, wherein the gimbal is configured to be coupled between a disk drive slider and a disk drive load beam. The gimbal includes a strut having a buss and a projection that is coupled to the bu
8049995 Baseplate hub geometry for reduced after-swaging suspension deflection November 1, 2011
A method of designing a hard disk drive suspension swage hub geometry for an actuator arm having upper and lower suspensions attached thereto, includes using a finite element analysis model to simulate the effects of swaging the suspensions to the actuator arm, identifying relevant g
8004798 High bandwidth flexure for hard disk drives August 23, 2011
A disk drive flexure has a pattern of voids in the ground plane in the area directly underneath the read and write bond pads, in order to adjust the respective impedances of the read and write bond pad pairs to match the impedances of the read and write transducers and the signal trace
7957100 Disk drive gimbal having reduced residual stress and related method of manufacture June 7, 2011
A disk drive gimbal, an apparatus, and a related method of manufacture, wherein the disk drive gimbal includes a strut having a trace with a zig-zag shape. The trace is made from conducting material, and the zig-zag shape is configured to provide a level of stress relief to the condu
7940490 Apparatus and method for improving bandwidth of a fine positioning mechanism data storage manufa May 10, 2011
An apparatus and a method for improving bandwidth of a fine positioning mechanism in data storage manufacturing and test equipment that require fine positioning of a head on or about a track. The method comprises the steps of sensing separate sources of mechanical disturbance that mi
7924530 Head suspension having a punched gimbal dimple with coined inclined inner and outer surfaces ori April 12, 2011
A punched gimbal dimple with a coined, frusto-conical base in a head suspension and a method for producing such a dimple. The dimple has an apex and a base, the base having outer and inner surfaces which generally conform to conical frustums. The conical frustum half-cone angles differ
7907367 Punched gimbal dimple with a coined periphery in a head suspension March 15, 2011
A punched gimbal dimple with an annular coined periphery extending outward from the dimple in a head suspension and a method for producing such a dimple. The dimple and its coined periphery are fabricated from a dimple punch and a die with a raised coining surface. The coined area on the
7898772 Disk drive suspension with gimbal designed to provide enhanced signal fidelity March 1, 2011
A gimbal, a disk drive suspension that includes the gimbal, and a related method of manufacture, wherein the gimbal is configured to be coupled to a slider having a disk drive read-write transducer. The gimbal includes one or more strut(s) having an insulating layer that includes a first
7886422 Ultrasonic reclaim method for disk drive suspensions February 15, 2011
A method is provided for reclaiming a suspension from a disk drive head gimbal assembly (HGA). An ultrasonic probe is applied to the HGA's read/write head slider on a side opposite that of its solder balls. Ultrasonic oscillations are transmitted through the ceramic slider to the sid
7841065 Method of manufacturing a load beam to adjust droop angle November 30, 2010
A load beam having a bent rail, a suspension that includes the load beam, and a related method for manufacturing a load beam. The method includes providing the load beam before the bent rail is formed, and coining the load beam at a location where the bend will occur in the rail.
7830638 Structure and method for localizing solder ball strain on hard disk drive suspension gimbal November 9, 2010
In a flexure assembly for a hard disk drive suspension, a structure for preventing strains introduced by solder ball bonding from affecting the pitch static attitude (PSA) and other characteristics of the flexure assembly is presented. The structure includes a flexure that features two
7829793 Additive disk drive suspension manufacturing using tie layers for vias and product thereof November 9, 2010
An additive process disk drive suspension interconnect, and method therefor is provided. The interconnect has a metal grounding layer of typically stainless steel or copper metallized stainless steel, a metal conductive layer and an insulative layer between the metal grounding layer
7821742 High stroke sensitivity suspension with laminate load beam for additive laminated and other inte October 26, 2010
A high stroke sensitivity microactuated disk drive suspension includes a microactuator, a laminate of first and second outer layers and a plastic inner layer that define a base portion, a spring portion and a beam portion. The base portion has proximate and distal regions coupled by a
7781679 Disk drive suspension via formation using a tie layer and product August 24, 2010
A disk drive suspension interconnect, and method therefor. The interconnect has a metal grounding layer, a metal conductive layer and an insulative layer between the metal grounding layer and the conductive metal layer. A circuit component such as a slider is electrically connected t
7773344 Suspension having separately optimized torsion stiffness and vertical stiffness August 10, 2010
A disk drive suspension has laterally separated mount plate cooperating structure of a pair of spaced, left and right hand continued extents defining engagement structures extending into the vertical plane of the suspension hinge portion, and laterally separated beam portion cooperat
7757379 Method for operating a disk drive apparatus employing a suspension having a vertical offset to r July 20, 2010
A suspension assembly for a hard disk drive includes at least two spring extensions that couple to a proximal portion of a load beam. These spring extensions are disposed by a vertical offset and couple to the load beam on opposite sides of a longitudinal axis of the load beam. The metho
7755866 Vertically coupling actuator arm for disc drives July 13, 2010
A support arm for use in a disc drive suspension includes an asymmetry that creates a vertical coupling in the support arm, i.e., a slight lateral movement of the support arm distal end to which a load beam is mounted in response to vibration-induced bending of the support arm. The v
7751153 Suspension assembly having recessed actuator with simplified lead connection July 6, 2010
A head suspension assembly couples a baseplate to a rotatable load through a planar triangular piezo microactuator for effecting hingeless rotation of the load. The microactuator expands, responsive to an excitation voltage, with greater magnitude in one direction than in another dir
7751149 Limiter structure with reduced vertical extent for low profile disk drive suspensions July 6, 2010
A disk drive suspension and method with a low profile limiter structure located within the vertical extent of the slider, the tongue free and any gap provided by the limiter structure so as to not increase the overall vertical extent of the suspension. The limiter structure has a tab
7719797 Multi-step shock limiter for head gimbal assembly May 18, 2010
A multi-step shock limiter in a disk drive suspension assembly has a load beam and a flexure, with a plurality of limiting pairs. A first limiting pair has a clearance less than that of any other limiting pair, and is flexible. During a shock condition, vertical movement of the flexure w
7706106 Hard disk drive suspension lifter with reinforcing features for high shock resistance April 27, 2010
Shock performance and stiffness of hard disk drive lifters are enhanced by extending one or more portions of a load beam in a dimension normal to the load beam plane. A load beam in a high shock suspension system comprises a planar body having transverse members extending between lon
7667930 Disk drive suspension and flexure with doubly and differentially deflected frame February 23, 2010
A disk drive suspension has a doubly increased dimple contact force through separate, differential deflections of the flexure frame toward the load beam so as to carry the flexure tongue having dimple engagement with the load beam closer to the beam, and thus have greater dimple cont
7609481 Oppositely deflected suspension flexure providing increased dimple contact force October 27, 2009
Method and apparatus in which a disk drive suspension flexure tongue supports a slider. A flexure frame attached to a suspension supports the tongue in dimple engagement with the suspension. Spaced, separate biasing structures on the frame act oppositely on the tongue for a net increase
7595965 Single PZT actuator for effecting rotation of head suspension loads September 29, 2009
A head suspension assembly couples a baseplate to a rotatable load through a planar triangular piezo microactuator for effecting hingeless rotation of the load. The microactuator expands, responsive to an excitation voltage, with greater magnitude in one direction than in another dir
7573680 Etched laminate structures for reducing track mis-registration in a disk drive suspension August 11, 2009
Structures and methods for creating a vertical offset between suspension springs or fingers within a suspension head assembly for use in a disk drive are disclosed, the vertical offset helping to reduce track mis-registration errors. The base plate and load beam may be made from thre
7570458 Disk drive suspension with reduced off-track error August 4, 2009
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 d
7551404 Load beam having concave stiffener with locating flanges June 23, 2009
A disk drive suspension has a mount plate, an outwardly tapered load beam supported by the mount plate and having a base portion, a hinge portion, a beam portion having a first face with turned edges and a flexure supported by the beam portion distally of said beam portion face, and a
7551401 Offset limiter for disk drive suspension June 23, 2009
A disk drive suspension assembly employing an offset limiter for allowing bending of a flexure with respect to a load beam after joining the two. The assembly comprises a baseplate, a load beam and a flexure, the load beam including one or more engagement surfaces, and the flexure includ
7542241 Disk drive suspension with 1.sup.st and 2.sup.nd torsion control through rail height variation a June 2, 2009
For controlling 1.sup.st and 2.sup.nd torsion characteristics in a disk drive suspension, a disk drive suspension is provided having a beam portion with edge rails extending along its edge regions, the edge rails are locally varied substantially identically between lesser and greater
7532438 Wireless flexure with curved trace geometry against pitch and roll adjustment springback May 12, 2009
A wireless disk drive suspension and method of manufacture in which curvilinear deflections of the plastic film and conductive traces relative to the flexure metal layer provide for containment of the strains accompanying pitch and roll adjustment of the flexure and allow adjustment
7523549 Dimensionally stabilized flexible circuit fabrication method and product April 28, 2009
A method of fabricating a flexible circuit interconnect comprising a conductive pattern on a flexible substrate comprising layers of different components having different coefficients of thermal expansion, including exposing the flexible substrate sequentially to different temperature
7511925 Windage insensitive disk drive suspension March 31, 2009
Windage is the sum of multifarious airflows induced and endured inside a disk drive. The invention provides a disk drive suspension and method for use in windage conditions within a disk drive. The suspension has a base portion carrying a hinge portion that carries a beam portion having
7508633 Asymmetric load beam for improving resonance performance of hard disk drive suspension March 24, 2009
Structure for a load beam used in hard disk drive devices includes an asymmetric structure. The load beam exhibits longitudinal asymmetry (i.e., asymmetry along its long axis) in regard to the weight distribution, but has a center of mass that lies along its longitudinal axis due to
7502203 Hard disk drive suspension employing a vertical offset to reduce track mis-registration induced March 10, 2009
Apparatus and method for reading and writing information onto a hard disk drive is provided. The apparatus includes a suspension assembly for a hard disk drive. The suspension assembly includes at least two spring extensions that couple to a proximal portion of a load beam. These spring
7489493 Method to form electrostatic discharge protection on flexible circuits using a diamond-like carb February 10, 2009
Techniques for preventing electrostatic discharge (ESD) and circuit noise are provided. More particularly, the present invention provides a method to prevent ESD damage during the assembly of computer disk commonly called a hard disk for memory applications. The coating mainly involves a
7489477 Delayed limiter positioning in suspension manufacture February 10, 2009
Static attitude (SA) adjustment of a disk drive suspension load beam is conducted before final alignment of a limiter to increase adjustment range, to avoid limiter damage, and to minimize unintended distortion of parts during adjustment. To have the SA adjustment before final alignment
7460337 Low density, high rigidity disk drive suspension for high resonance frequency applications December 2, 2008
A disk drive suspension component for carrying a slider at a disk is formed of a laminate of at least three metal layers of like mechanical and chemical formability, including a first outer layer, a second outer layer, and an intermediate layer, at least one of the layers having a vo
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