Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8085509 | Write head with common mode termination resistor A write circuit and a head for a hard disk drive. The head includes a substrate that has an electrical ground and a write element that has a center tap. The head also has a resistor that is connected to the center tap and the electrical ground. The resistor provides... | 12/27/2011 |
| 7974046 | Thin-film magnetic head with heating portion and protrusion adjustment portion, head gimbal assembly equipped head, magnetic recording/reproducing apparatus equipped HGA, and manufacturing method of head The present invention provides a thin-film magnetic head which surely improves the writing and reading characteristic with reducing the flying height and surely handles the contact or collision with the magnetic recording medium. A thin-film magnetic head is ... | 07/05/2011 |
| 7957104 | Suspension with bi-layer flexure base whose layers have different coefficients of thermal expansion to eliminate thermally induced flying height variations A flexure with improved temperature sensitivity is disclosed. An embodiment of the present invention includes a bi-layered flexure that raises or lowers a read/write element a distance that is approximately equal to the distance of protrusion and retraction at varyi... | 06/07/2011 |
| 7933098 | Thin film magnetic head using a shunt line connecting to the magnetic layer at a position that deviates from the center of the heat generating region A thin film magnetic head is disclosed that is capable of improving the thermal efficiency of a heater. A thin film magnetic head includes: a lower shield layer; an upper shield layer; a reproducing element that is provided between the lower shield layer and the upp... | 04/26/2011 |
| 7881017 | Fly height control apparatus and electrical coupling thereto for supporting a magnetic recording transducer A fly height control apparatus for supporting a magnetic recording transducer comprises a trifurcated slider. A piezoelectric transducer is coupled to a surface of the central trifurcation of the trifurcated slider. The surface is opposite and parallel to an air bea... | 02/01/2011 |
| 7835115 | Integrated recording head with selective movement A recording head for use in magnetic storage devices is disclosed. The recording head includes flexure assemblies that can be selectively and electrically charged to provide a motional force to selectively move the flexure assemblies and to cause corresponding movem... | 11/16/2010 |
| 7804665 | Head support device, disk device having the head support device, and portable electronic device having the disk device A head support device that is resistant to shock due to external impact, a disk device including the head support device, and a portable electronic device including the disk device are disclosed. In the head support device, a head support arm on which a head slider ... | 09/28/2010 |
| 7791841 | Head slider for hard disk drive A head slider for a hard disk drive is disclosed. The slider includes an operation device associated with a read/write head and adapted to change the flying height between the read/write head and a disk in relation to temperature. The operation device may be formed ... | 09/07/2010 |
| 7755867 | Controlled air bearing (CAB) for magnetic spacing control The present invention relates to a controlled air bearing which allows adjustable control over the magnetic spacing between the pole tips of a slider and the surface of the disc. In accordance with one embodiment of the invention, a slider for use in a data storage ... | 07/13/2010 |
| 7738216 | Thin film magnetic head having a thermal plastic deformation portion and manufacturing the same A thin film magnetic head includes a slider that floats from a surface of a recording medium by an airflow generated on the surface of the recording medium to be rotated, and a thin film magnetic head element structure that is formed on an air discharging end face o... | 06/15/2010 |
| 7729086 | Perpendicular magnetic recording head with dynamic flying height heating element disposed below turns of a write coil A magnetic head for perpendicular magnetic recording includes a slider having an air bearing surface (ABS) and a trailing surface and a transducer fabricated on the trailing surface. The transducer includes a magnetoresistive (MR) read element disposed within a gap ... | 06/01/2010 |
| 7724480 | Slider that dynamically adjusts the head-to-disk spacing in a disk drive A disk drive includes a drive circuitry, a storage disk and a slider having a slider body. The storage disk has a data surface, and the slider magnetically interacts with the storage disk to transmit a signal between the storage disk and the drive circuitry. The sli... | 05/25/2010 |
| 7701676 | Flying head slider and recording medium drive A flying head slider includes a write head element and a read head element mounted on the slider body. A first transformable actuator serves to protrude the write head element toward a recording medium. A second transformable actuator serves to protrude the read hea... | 04/20/2010 |
| 7660080 | Read/write head with dynamic flying height control by magnetostriction A read/write head for use in a data storage device to control the low dynamic flying height in order to achieve high data recording storage capacity of magnetic hard drives. The read/write head is designed for use in a data storage device that includes a storage med... | 02/09/2010 |
| 7656619 | Magnetic head sliders for disk drives having a heating element and pedestal in thick undercoat layer A head includes a substrate, an undercoat material, a read structure, and a write structure. The undercoat material at least partially provides electrical insulation between the read structure and the substrate. The read structure allows for reading magnetic fields ... | 02/02/2010 |
| 7589938 | Read-write head with integrated microactuator To enable a read-write head to perform a fast and accurate track following, the invention proposes a read-write head (1), which exhibits: a first block (11) and a carrier (14) movably attached ... | 09/15/2009 |
| 7573682 | Writer heater for thermal protrusion shape control in a magnetic writer A transducing device having a storage interface surface includes a writer having a pole tip region, a coil having a width positioned around the writer, and a heating element. The heating element extends to near the storage interface surface. A portion of the heating... | 08/11/2009 |
| 7542243 | Slider with transducing and heating elements formed on trailing end thereof and sharing same thin film structure The present invention provides a transducing device. The transducing device includes a transducing element having a read element and a write element. The transducing device further includes at least one heating element formed within the transducing device and spaced... | 06/02/2009 |
| 7502205 | Method of operating read and write transducers by controlling thermal actuation A control source and drivers for a thermal actuator fly height controlled heads in a disk drive system includes provisions for driving a heater element to dissipate various levels of power, and thus actuate the head by a desired amount, depending on whether the head... | 03/10/2009 |
| 7436631 | Heated gimbal for magnetic head to disk clearance adjustment A head gimbal assembly having a suspension and a read/write head is provided. The read write head is attached to a flexure tongue of the suspension. Heating elements on arms of the suspension, set on either side of the suspension tongue, are used to alter flight cha... | 10/14/2008 |
| 7430098 | Perpendicular magnetic recording head with dynamic flying height heating element A magnetic head includes a slider having an air bearing surface (ABS) and a trailing surface, with a transducer fabricated on the trailing surface. The transducer includes an adjunct pole disposed in a first general plane, the adjunct pole having a front edge that i... | 09/30/2008 |
| 7400473 | Slider with independent fly-height adjustment of reader and writer A disk drive includes a rotatable storage disk, a suspension, and a slider assembly. The slider assembly includes a slider body, a first slider deformer and a second slider deformer. Activation of the first slider deformer deforms the slider body, and activation of ... | 07/15/2008 |
| 7385789 | Magnetostrictive actuator in a magnetic head In order to obtain improved magnetic track density, it is desirable to bring the read and write elements as close to the recording surface as possible, short of actually touching it. This has been achieved by utilizing a magnetostrictive actuator, comprising single ... | 06/10/2008 |
| 7372665 | Magnetic recording head with resistive heating element located near the write coil A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge, with a thin-film transducer disposed on the trailing surface of the slider body near the trailing edge. The thin-film transducer includes a coil embed... | 05/13/2008 |
| 7369369 | Bidirectional micropositioning recording head for a magnetic storage device A recording head for use in magnetic storage devices is disclosed. The recording head includes a transducer that is bi-directionally movable with respect to a magnetic medium surface of the magnetic storage medium, thereby enabling improved positioning of the transd... | 05/06/2008 |
| 7369347 | Apparatus and method for piezoelectric layer as vertical micro-actuator in slider of a hard disk drive Slider used to access data on rotating disk in hard disk drive, including vertical micro-actuator forming piezoelectric layer perpendicular to air bearing surface and coupled to deformation region including read-write head. Slider further includes vertical control s... | 05/06/2008 |
| 7352530 | Method and apparatus for reducing a suspension gram load to increase head to disk interface reliability for contact recording systems An apparatus and method for reducing a suspension gram load to increase head to disk interface reliability for contact recording systems. The method provides a suspension for reaching over a disk. A slider having a read/write head element on a trailing edge (TE) por... | 04/01/2008 |
| 7336449 | Three terminal magnetic sensor (TTM) having a metal layer formed in-plane and in contact with the base region for reduced base resistance A three terminal magnetic sensor (TTM) has a base region, a collector region which is adjacent the base region, an emitter region, and a barrier region which separates the emitter region from the base region. A sensing plane is defined along sides of the base region... | 02/26/2008 |
| 7333299 | Head supporting mechanism including two load beams with ribs overlapped with each other A suspension is provided, which comprises: a flexure with elasticity for supporting a head slider having at least one head element; a first load beam having first ribs for reinforcement at both side ends of the first load beam, for supporting the flexure; and a seco... | 02/19/2008 |
| 7315436 | Suspension assembly with a shape memory actuator coupled to a gimbal A suspension assembly for use with a disk drive having a disk and a slider. The suspension assembly includes a gimbal for receiving the slider. The suspension assembly further includes a shape memory actuator coupled to the gimbal. The shape memory actuator is forme... | 01/01/2008 |
| 7301724 | Transducing head Determining an error in position of at least two heads coupled to a piezoelectric material, and changing a potential applied to a piezoelectric material to reduce the error in position of the at least two heads. ... | 11/27/2007 |
| 7292407 | Disk drive with support structure for disk-vibration capacitive sensors A data recording disk drive has one or more capacitive sensors for sensing out-of-plane vibration of the disk or disks. The sensors are attached to a support structure that is attached to the disk drive housing. Each sensor is associated with a disk and faces a surf... | 11/06/2007 |
| 7289285 | Information storage systems An information storage apparatus includes a storage media including a plurality of information tracks. Each storage medium has a head assembly having a substantially planar surface and a plurality of read/write heads positioned in registry with the information track... | 10/30/2007 |
| 7283328 | Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, magnetic disk drive apparatus with head gimbal assembly, method for designing thin-film magnetic head and manufacturing method of thin-film magnetic head A thin-film magnetic head includes at least one inductive write head element and at least one read magnetic head element, capable of controlling a spacing between a magnetic recording medium and the at least one magnetic read head element by heating. A gain SG (nm/Â... | 10/16/2007 |
| 7283327 | Magnetic write head having resistive heater coil A magnetic write head includes a magnetic yoke having a first pole and a second pole. The first pole and the second pole each terminate at an air bearing surface. The first pole is magnetically coupled to the second pole in a backgap region. The magnetic write head ... | 10/16/2007 |
| 7281317 | Manufacturing method of flying magnetic head slider A manufacturing method of a flying magnetic head slider includes a step of providing a substrate with a plurality of inductive write head elements formed thereon, each head element having a pair of magnetic poles facing to each other via a magnetic gap, and with a p... | 10/16/2007 |
| 7277254 | Magnetic recording disk and process for manufacture thereof A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end m... | 10/02/2007 |
| 7274538 | Sensor with semi-permanently deformable element for active element adjustment A sensor comprises a transducer portion including a semi-permanently deformable portion. A deformation of the semi-permanently deformable portion in response to an activation energy deforms the transducer portion. The deformation is retained after the activation ene... | 09/25/2007 |
| 7262937 | Responsive aeroelastic slider One embodiment of the present invention pertains to a slider that includes a substrate, a transducer tip disposed on the substrate, and a hydrodynamic surface including a responsive aeroelastic deposit. The substrate has a first coefficient of expansion responsive t... | 08/28/2007 |
| 7252897 | Magnetic recording disk and process for manufacture thereof A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end m... | 08/07/2007 |
