Rail Side Edge Detail Patents (Class 360/235.9)
  • Patent number: 9082441
    Abstract: Embodiments disclosed herein generally relate to a head slider within disk drive data storage devices. A head slider comprises a head body having a leading edge, a trailing edge and an ABS. The ABS has a leading portion and a trailing portion, the trailing portion having a tail section disposed adjacent the trailing edge. The head body has three surfaces recessed from the ABS: a first surface disposed a first vertical distance, a second surface disposed a second vertical distance that is greater than the first vertical distance, and a third surface disposed a third vertical distance that is greater than the second vertical distance. A first plateau disposed at the third surface is bound between a second plateau at the first surface and a trailing pad of the tail section. Between the first plateau and the trailing pad are one or more notches disposed at the first surface.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: July 14, 2015
    Assignee: HGST NETHERLANDS B.V.
    Inventors: Yong Hu, Weidong Huang
  • Patent number: 8553363
    Abstract: Approaches for a head slider for use within a hard-disk drive. The head slider comprises an air bearing surface (ABS) and an electromagnetic transducer disposed at an air outflow end of the air bearing surface. The air bearing surface comprises an inner (ID) side rail proximate the inner diameter side and an outer (OD) side rail proximate the outer diameter side. The ID side rail is longer in length than the OD side rail. The physical dimensions of the ID side rail have a geometry that reduces a contact force between the head and the magnetic-recording disk when the head experiences a positive roll static attitude (RSA). The physical dimensions of the OD side rail have a geometry that reduces contact force between the head and the magnetic-recording disk when the head experiences a negative RSA.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: October 8, 2013
    Assignee: HGST Netherlands B.V.
    Inventor: Lee Dorius
  • Patent number: 8248729
    Abstract: Embodiments of the present invention pertain to reducing the probability of a slider contacting a surface of a disk. According to one embodiment, a first etch is performed on the slider. Air compression mechanisms are created near each corner associated with a trailing edge of the slider so that the probability that the corners will contact the surface of the disk is reduced.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: August 21, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventors: Weidong Huang, Robert N. Payne, Qinghua Zeng
  • Patent number: 8174794
    Abstract: 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. The lubricant-accumulation barrier also includes a plurality of lubricant-accumulation-barrier portions disposed at a plurality of respective depths below an outer-most surface of a disk-facing side of the slider.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 8, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventor: Lee K. Dorius
  • Patent number: 8169744
    Abstract: 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.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 1, 2012
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventor: Lee K. Dorius
  • Patent number: 8137163
    Abstract: A disc burnishing head includes an array of burnishing pads and a first and second side rail projecting from a bottom surface of a slider body. The side rails each have an inside surface facing the burnishing pads and an outside surface facing outward. The outside surface of at least the first side rail is serrated. The serrations define a plurality of teeth and notches on the outside surface of the first side rail for cutting, cleaning, and conditioning defects from the surface of a disc.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: March 20, 2012
    Assignee: Seagate Technology LLC
    Inventors: Weimin Qian, Igor V. Sytine, Matthew Aaron Carper, Pranesh Swany, Eric K. Dahlin, Hamid F. Ghazvini
  • Patent number: 8051553
    Abstract: Apparatus for adjusting the static attitude of a head suspension having a gimbal with at least one gimbal arm. One embodiment of the invention includes a pair of first contacting members contacting a first side of the gimbal arm at a pair of spaced apart locations, and a second contacting member contacting a second side of the gimbal arm at an intermediate location between the spaced apart locations. The first and second contacting members move together relative to each other, plastically deforming the gimbal arm by the relative movement between the second and first contacting members while the spaced apart location between the first contacting members is maintained during the plastic deformation such that at least one of a pitch and roll parameter of the gimbal is adjusted to a desired amount.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: November 8, 2011
    Assignee: Hutchinson Technology Incorporated
    Inventors: Thomas H. Wick, Mark S. Hedeen, Jeremy J. Stroschein, John L. Schumann, Justin M. Eggert
  • Patent number: 8009389
    Abstract: An air bearing surface of a slider, which achieves low crown sensitivity is described. In one embodiment, the air bearing surface comprises a center channel and a plurality of side channels, wherein at least one side channel of the plurality of side channels is open to the center channel. The center channel and the plurality of side channels are configured to allow air to flow along the center channel toward the trailing edge of the ABS, such that there is low crown sensitivity.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 30, 2011
    Assignee: Hitachi Global Storage Technologies, Netherlands B.V.
    Inventors: Sanford A. Bolasna, Lee K. Dorius, Weidong Huang, Robert N. Payne
  • Publication number: 20090109574
    Abstract: 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.
    Type: Application
    Filed: October 26, 2007
    Publication date: April 30, 2009
    Applicant: Seagate Technology LLC
    Inventor: Richard E. Martin
  • Patent number: 7330338
    Abstract: Apparatus and method for adjusting at least one of a pitch and roll parameter of a gimbal for a head suspension assembly having a pair of members contacting at least one gimbal arm at spaced apart locations and having an additional member contacting the gimbal arm intermediate the spaced apart locations and wherein the members move together to cause plastic deformation of the gimbal arm. A like apparatus and method may be used sequentially or concurrently on a second gimbal arm, and may have an inverted orientation with respect to the first apparatus.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: February 12, 2008
    Assignee: Hutchinson Technology Incorporated
    Inventors: Thomas H. Wick, Mark S. Hedeen, Jeremy J. Stroschein, John L. Schumann, Justin M. Eggert
  • Patent number: 7317596
    Abstract: A continuous-media or patterned-media disk drive with a low ratio of linear bit density in bits per inch (BPI) in the along-the-track direction to track density in tracks per inch (TPI) in the cross-track direction has a magnetoresistive read head with high cross-track spatial resolution. The read head is located between two magnetic shields, with the shields and read head formed on a side surface of the head carrier perpendicular to the carrier's disk-facing surface. The carrier is supported by the disk drive actuator with the side surface of the carrier oriented generally parallel to the data tracks. In this arrangement the high-spatial-resolution direction of the read head (the transverse direction perpendicular to the side surface on which the head is formed) is in the radial or cross-track direction.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: January 8, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Thomas R. Albrecht, Robert E. Fontana, Jr., Ching Hwa Tsang, Mason L. Williams, Bruce Alexander Wilson
  • Patent number: 7085103
    Abstract: A magnetic head slider, for sliding on a magnetic disk, which has a leading edge, a trailing edge, an air bearing surface having a front step bearing of submicron depth made from the leading edge, and a rail surface made from the front step bearing. A negative pressure recess which is deeper than the front step bearing, is formed as a recess from the rail surf ace, and a side step bearing with a depth identical to that of the front step bearing is made from the rail surface. Side padB are provided which each have a width W and length L, wherein W is greater than L.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: August 1, 2006
    Assignee: Hitachi Global Storage Technologies Japan, Ltd.
    Inventors: Hidekazu Kohira, Masaaki Matsumoto, Kiyoshi Hashimoto, Masayoshi Endo, Akio Takakura, Yoshinori Takeuchi, Shinsuke Higuchi, Akira Iida
  • Patent number: 6920019
    Abstract: A disk drive (10) including one or more storage disks (12) and a head stack assembly (14) is provided herein. The head stack assembly (14) includes an actuator assembly (16) and a plurality of transducer assemblies (18). The actuator assembly (16) moves the transducer assemblies (18) relative to the storage disks (12). Each transducer assembly (18) includes a slider (22), a load beam (24) and a head suspension (26) that secures the slider (22) the load beam (24). Preferably, the slider (22) includes an air bearing surface (27) and one or more pads (28). Importantly, the head suspension (26) maintains the slider (22) at a negative pitch static attitude. As a result thereof, the slider (22) is less likely to tip during shutdown and/or after vibration.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: July 19, 2005
    Assignee: Maxtor Corporation
    Inventors: Richard E. Martin, Brian D. Strom
  • Patent number: 6754043
    Abstract: The head slider mounts a recording/reproducing element and flies over a recording medium with the airflow generated when the recording medium moves. The head slider comprises a slider body having an air inflow end and an air outflow end, a rail projected from the slider body to define an air bearing surface extended to the outflow end, a projection formed on the rail and between the inflow end and the outflow end, and a recess formed at the outflow end of the rail to make narrow the width of the rail. When the recording medium stops, the head slider and the recording medium are in contact at the projection and the air outflow end of the rail. Since the outflow end of the rail is narrow in width, the stiction can be prevented. Moreover, it is unnecessary to form a projection near the outflow end of the rail and thereby the flying height of the recording/reproducing element can be lowered to improve the recording/reproducing sensitivity.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: June 22, 2004
    Assignee: Fujitsu Limited
    Inventors: Yoshiharu Kasamatsu, Ryosuke Koishi, Takayuki Yamamoto
  • Patent number: 6687088
    Abstract: A slider body configuration, or slider, for carrying a data transducer in cooperative relationship with a rotating data storage disc. The slider includes a plurality of landing pads which serve to minimize the contact area between the slider and the discs when the heads are parked in contact with the discs, and the landing pads project from surfaces which are farther removed from the disc surface than the air bearing surfaces, thus minimizing the size and strength of any liquid miniscus formed between the slider and the disc when the slider and disc are in contact. By recessing the bases of the landing pads from the air bearing surfaces, the effect of the landing pads on the separation between the data transducer and the discs is minimized.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: February 3, 2004
    Assignee: Seagate Technology LLC
    Inventors: Zine-Eddine Boutaghou, Peter Raymond Segar
  • Patent number: 6490134
    Abstract: An information handling system, such as a disk drive, includes a base, a disk stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly also includes a load spring and a slider attached to said load spring. The slider includes an air-bearing surface which has roughened contact surface areas to reduce stiction in a contact start stop drive or in a drive that parks the slider on a ramp.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: December 3, 2002
    Assignee: Seagate Technology LLC
    Inventor: Zine Eddine Boutaghou
  • Patent number: 6483668
    Abstract: A slider for supporting transducer elements in a disc drive. The slider including an edge protection feature for contact interface protection for head disc interface.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: November 19, 2002
    Assignee: Seagate Technology LLC
    Inventors: Mary C. Hipwell, Andreas A. Polycarpou, Zine-Eddine Boutaghou
  • Patent number: 6405426
    Abstract: A first step portion is formed at a portion at which on an outer end portion of a facing surface of a surface of the slider meets the side panel of the slider. Furthermore, a second step portion is formed at the portion at which the outer end portion of the first step portion meets the side panel of the slider. An edge or the like due to machining occurs at an outer end portion of the second step portion. However, even if the magnetic head is steeply inclined, the outer end portion of the second step portion in which the edge or the like due to machining occurs is barely brought into contact with the recording medium because of the formation of the second step portion.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: June 18, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventor: Yasuyuki Kondo
  • Patent number: 6198601
    Abstract: A magnetic head element has one or more rails formed on the surface thereof. Each rail is formed so as to have a tapered angle of 55-85°. To form such a rail, ion milling is conducted; the rail substrate used is allowed to have an inclination angle to 15-60° and is rotated; and there is used, as the ion milling gas, a fluorinated hydrocarbon (e.g., CH2FCF3) gas alone or a mixed gas of said fluorinated hydrocarbon gas and Ar, SF6 or the like. Accordingly, a magnetic head rail shape gives a small variation in flying height between magnetic bead and magnetic disc.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: March 6, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Hira, Tamaki Toba, Hirotaka Imayama, Atsuko Ohkawa, Masayasu Fujisawa, Kazuo Nate, Hideki Sonobe, Saburo Suzuki, Eisei Togawa, Hiroshi Ishizaki, Yoshiki Hagiwara