| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 360235500 | Negative pressure type | 22 |
| 20080198509 | Three-etch ABS design with a closed front channel - An air-bearing surface of a hard disk drive slider comprises a trailing edge wherein a magnetic transducer is coupled to the air-bearing surface. A leading edge is opposite from the trailing edge. A channel is coupled to the air-bearing surface wherein the channel comprises: a closure at a distal end proximal to the leading edge; a bottom surface; and a center of the channel approximately aligned colinear with a center of the magnetic transducer. In this configuration the channel generates significantly more negative pressure proximal to the leading edge thereby stiffening the air bearing during operation. | 08-21-2008 |
| 20090067095 | FLY HEIGHT COMPENSATION USING READ GAIN CONTROL LOOP - Apparatus and methods are disclosed that regulate head fly height so as to compensate for variation in height of a disk surface. An exemplary apparatus includes a circuit that detects disk height variation in response to variation in the gain of a variable gain amplifier, within an automatic gain control loop, that amplifies a read signal as the head reads from the disk surface. The circuit regulates the head fly height so as to compensate for the detected variation in disk height. | 03-12-2009 |
| 20090109573 | DISK DRIVE AND HEAD SLIDER - Embodiments of the present invention provide a head slider that suppresses accumulation of lubricant droplets on an air-bearing surface due to a backflow, and thus improves reliability of a disk drive. According to one embodiment, a lubricant droplet being adhered to a head slider and accumulated thereon, which are caused by extremely low flying height of the head slider, are prevented from falling onto a recording medium. When velocity of a recording medium at a position where the head slider faces the recording medium is assumed to be v, step depth δ | 04-30-2009 |
| 20090141402 | HEAD, HEAD SUSPENSION ASSEMBLY, AND DISK DEVICE PROVIDED WITH THE SAME - According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider. | 06-04-2009 |
| 20100128395 | SLIDER HAVING A LUBRICANT-ACCUMULATION BARRIER - A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height sufficient for writing data to and reading data from the magnetic-recording disk. The slider resistant to lubricant accumulation also includes a lubricant-accumulation barrier disposed in proximity to a trailing edge of the slider. The lubricant-accumulation barrier is configured to reduce lubricant accumulation on the slider. | 05-27-2010 |
| 20100149691 | HEAD, HEAD SUSPENSION ASSEMBLY, AND DISK DRIVE PROVIDED WITH THE SAME - According to an embodiment, a slider of a head is provided with a negative-pressure cavity | 06-17-2010 |
| 20110032641 | MAGNETIC HEAD SLIDER - A magnetic head slider comprising: an air inflow end; an air bearing surface; and an air outflow end, the air bearing surface comprising: an inflow side rail face further formed towards the air inflow end than the center of the air bearing surface; an outflow side rail face formed further towards the air outflow end than the inflow side rail face, having a magnetic recording/reproduction element arranged thereon; a negative pressure groove face formed between the inflow side rail face and the outflow side rail face; and a groove face formed between the inflow side rail face and the negative pressure groove face, or between the inflow side rail face and the outflow side rail face; and comprising at least one step structure shallower than the groove face at the slider end in the width direction of the groove face. | 02-10-2011 |
| 20110090597 | HEAD WITH SLIDER SUPPRESSING BACK FLOW, HEAD SUSPENSION ASSEMBLY, AND DISK DEVICE PROVIDED WITH THE SAME - According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider. | 04-21-2011 |
| 360235600 | Leading end detail | 4 |
| 20090310259 | Head, Head Suspension Assembly, and Disk Device Provided with the Same - According to one embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outflow side of the negative-pressure cavity, a pair of skirt portions extending in the first direction from the side portions toward the outflow end of the slider and being deeper than the side portions, and intermediate step portions extending continuously along the skirt portions outside the skirt portions with respect to the second direction and formed to be deeper than the skirt portions and shallower than the negative-pressure cavity. | 12-17-2009 |
| 20120002327 | HEAD AND DISK DEVICE WITH THE SAME - According to one embodiment, a head includes a slider and a head section on the slider. A supporting surface of the slider includes a leading step in an inflow side of airflow, a leading pad on the leading step, a negative-pressure cavity in a downstream side of the leading pad, a trailing step in an outflow end side of the airflow, a center rail extending from the leading step to the trailing step, a guide groove in the center rail, configured to guide the airflow to the trailing step, and an intake groove formed in the leading pad, extending in a direction transverse to the airflow, communicating with the guide groove, and includes two end parts in its longitudinal direction, the two end parts extending in a direction of the airflow and forming openings open to the inflow side of the leading pad. | 01-05-2012 |
| 20120134055 | HEAD AND DISK DRIVE PROVIDED WITH THE SAME - According to one embodiment, a head includes a head slider including a bearing surface and configured to fly by an airflow between the recording medium surface and the bearing surface, and a recording element and a reproduction element arranged in an outflow end portion of the head slider with respect to the airflow. The bearing surface includes a first pressure generating portion on an inflow end portion of the head slider with respect to the airflow, configured to generate a pressure, a second pressure generating portion on the outflow end portion, configured to generate a pressure, and a third pressure generating portion between the first and second pressure generating portions at a transverse central part of the bearing surface, configured to generate a pressure higher than that generated by the first pressure generating portion and lower than that generated by the second pressure generating portion. | 05-31-2012 |
| 20140168820 | SLIDER WITH LUBRICANT CONTROL FEATURES - A slider that minimizes lubricant accumulation includes bearing surfaces that provide above ambient fluid pressure, a cavity located between two bearing surfaces and at least one step feature that is spaced apart from the bearing surfaces and is located in and protrudes from a floor of the cavity at a height that is less than a height of the bearing surfaces. The at least one step feature includes surfaces configured to diverge and converge airflow in the cavity. | 06-19-2014 |
| 360235700 | Trailing end detail | 7 |
| 20080259501 | Head with an air bearing surface having a shallow recessed trailing air flow dam - A head has a slider with an air bearing surface having a left trailing air flow dam extending from a trailing pad along a lateral axis, and a right trailing air flow dam extending from the trailing pad along the lateral axis in an opposing direction. A sub-ambient pressure cavity is disposed adjacent to and upstream of at least one of the trailing air flow dams. The trailing pad and the left and right trailing air flow dams together laterally span at least 75% of the width of the slider. Each of the left and right trailing air flow dams is recessed from the primary plane by a step depth in the range 0.05 to 0.5 microns, and the sub-ambient pressure cavity is recessed from the primary plane by a cavity depth in the range 0.8 to 2 microns. | 10-23-2008 |
| 20090141403 | HEAD WITH AN AIR BEARING SURFACE HAVING LEFT AND RIGHT LEADING PRESSURIZING STEPS, EACH WITH SHORT AND LONG REGIONS - A head has an air bearing surface with left and right leading pressurizing steps. The left and right leading pressurizing steps are each partially surrounded by left and right leading pads, respectively. The left leading pressurizing step includes a left short region that extends for a first distance (measured parallel to the slider longitudinal axis) from the leading face of the slider to the left leading pad. The left leading pressurizing step also includes a left long region that extends for a second distance (measured parallel to the longitudinal axis) from the leading face to the left leading pad. The second distance is at least 25% greater than the first distance. The left short region is disposed closer to the left lateral face than is the left long region. The left long region is disposed closer to the longitudinal axis than is the left short region. | 06-04-2009 |
| 20090168248 | Head slider and disk drive device - Embodiments of the present invention help to adjust the recess depth of a head element portion of a head slider. In an embodiment of the present invention, in a test step in manufacturing an HDD, the HDD examines the recess depth of a head element portion and decreases and adjusts the recess depth if the recess depth of the head element portion does not satisfy the predetermined condition. The HDD moves an actuator to a ramp of a retract position and supplies power to a heater in a head slider. If the heater power is large, the head element portion undergoes plastic deformation. The plastic deformation of the head element portion decreases the recess depth of the head element portion. | 07-02-2009 |
| 20110007423 | Supplemental Layer to Reduce Damage from Recording Head to Recording Media Contact - Recording heads for data storage systems are provided. Recording heads include a substrate layer made of a first material. The substrate layer has a bearing surface side. A tapered feature made of a second material is included on the bearing surface side. The first material is illustratively a multiphase material and the second material is illustratively diamond-like carbon. | 01-13-2011 |
| 20110317311 | HEAD AND DISK DRIVE WITH THE SAME - According to one embodiment, a head includes a slider including a supporting surface opposed to a surface of a rotatable recording medium, and a head section on the slider, configured to record data on and reproduce data from the recording medium. The supporting surface includes a negative-pressure cavity in the supporting surface to produce a negative pressure, a leading step on an inflow side of the airflow in relation to the negative-pressure cavity, a trailing step on an outflow side of the airflow in relation to the negative-pressure cavity, and including the head section, and a pad provided outside the trailing step at an outflow end part of the negative-pressure cavity, and open in at least one of a central side of the slider and an outflow end side of the slider. | 12-29-2011 |
| 20120250190 | REVERSE FLOW PREVENTER UNIT - Disclosed are a slider for a memory device and a hard memory device having the same. The slider for a memory device includes a slider body configured to fly over the surface of a medium at a particular height; and a reverse flow preventing unit disposed at part of the slider body adjacent to a trailing edge of the slider body and configured to prevent a reverse flow of air between the medium and the slider body. | 10-04-2012 |
| 20130215534 | SLIDER EDGE FEATURES - A slider comprising a body having an air bearing surface (ABS), wherein the ABS extends between a leading edge and a trailing edge of the body. The slider comprises a transducer supported by the body and positioned near the trailing edge, wherein the transducer comprises a pole tip partially extending from the body. The slider comprises a surface defined in the body and forming the trailing edge, wherein the surface comprises a plurality of segments. A first segment of the plurality of segments extends from the ABS and is offset from a portion of the pole tip recessed within the body. The first segment is offset from the pole tip portion by a lesser extent than any other of the plurality of segments. | 08-22-2013 |
| 360235800 | Rail surface detail | 2 |
| 20080259502 | MAGNETIC HEAD SLIDER - A magnetic head slider has a recess portion recessed with respect to the center rail. The recess portion has a spherical or oval-spherical projection, which includes a read element and a write element disposed in the recess portion. The recess portion may prevent increasing flying height of a slider base due to projection height h may be suppressed, and may secures higher air film stiffness, so that consequently flying stability of the slider may be improved. | 10-23-2008 |
| 20100149692 | HEAD SLIDER AND STORAGE DEVICE - According to one embodiment, a head slider includes a slider main body, a front rail, and at least a pair of grooves. The slider main body defines a base surface. The front rail rises from the base surface on the air inflow side of the slider main body and defines an air bearing surface on the top surface. The grooves are each formed in the front rail and define the air outflow end closer to the air inflow side than the air outflow end of the air bearing surface. The grooves are spaced apart in the slider width direction of the slider main body. | 06-17-2010 |
| 360235900 | Rail side edge detail | 1 |
| 20090109574 | High acceleration seek optimized slider - A slider includes a slider body having an outer side edge, an inner side edge, an outside rail and an inside rail. The outside rail has an inner edge and an outer edge and is positioned adjacent to the outer side edge of the slider body. The inside rail has an inner edge and an outer edge and is positioned adjacent to the inner side edge of the slider body. The outside rail includes an outer pressurization surface and the inside rail includes an inner pressurization surface. Both pressurization surfaces have an above-ambient fluid pressure when the slider is in flight. The outer pressurization surface extends along the outer edge of the outside rail a length greater than a length that the inner pressurization surface extends along the outer edge of the inside rail. | 04-30-2009 |
