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Head disk assembly including ramp having pivoting locational features

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G11B-021/22
출원번호 US-0406254 (1999-09-27)
발명자 / 주소
  • Scott E. Watson
  • James M. Pausanos
출원인 / 주소
  • Western Digital Technologies, Inc.
대리인 / 주소
    W. Chris Kim
인용정보 피인용 횟수 : 60  인용 특허 : 2

초록

A head disk assembly includes a disk, a head stack assembly and a ramp-defining structure. The disk has a recording surface surrounded by an outer circumference and the head stack assembly has an actuator pivot axis and a head gimbal assembly. The head gimbal assembly includes a gimbal defining a gi

대표청구항

1. A head disk assembly, comprising:a disk having a recording surface surrounded by an outer circumference; a head stack assembly having an actuator pivot axis and including a head gimbal assembly; the head gimbal assembly including a gimbal defining a gimbal axis parallel to and spaced a first dist

이 특허에 인용된 특허 (2)

  1. Shimizu Haruyoshi (Kawasaki JPX), Magnetic disk device with head lift system.
  2. Allsup David Scott ; Pottebaum Kenneth Lee ; Ridenour Phillip Randall, Rotary snubber assembly for a disc drive.

이 특허를 인용한 특허 (60)

  1. Nguyen, Daniel T.; Sill, Kevin R., Actuator pivot assembly including a bonding adhesive barrier configured to reduce contamination.
  2. Chen, Yih-Jen D.; McNab, Robert J., Apparatus for manufacturing piezoelectric actuators.
  3. Nguyen, Daniel T.; Watson, Scott E.; Liem, Andre Y.; Garbarino, Jonathan M.; Weiher, Joshua P., Coined VCM tab to limit cover deflection under pinch load.
  4. Tan, Jit Han; Tarrant, Dean Albert, Comb gripper for use with a shipping comb and a ramp in the assembly of a disk drive.
  5. Tian, Jifang; Li, Hongqi; Flynn, William; Hu, Xiaoping; Obregon, Francisco, Devices and methods for system-level disk drive vibration and shock testing.
  6. Lee, Yu-Min; Zheng, Hao; Griggs, Ian; Tran, Gregory, Disk drive actuator having a radially stepped pivot bore.
  7. Mani Biswas, Mousumi, Disk drive filter including fluorinated and non-fluorinated nanopourous organic framework materials.
  8. Gustafson, John R.; Patel, Mukesh, Disk drive having a conformal peripheral foil seal having an opening covered by a central metal cap.
  9. Larson, Nils E.; Edwards, John R.; Myers, David K.; Huang, Lidu; Watson, Scott E., Disk drive having a head loading/unloading ramp that includes a torsionally-compliant member.
  10. Horasart, Theerapong; Bupphasawan, Meatasit; Chaiboon, Chinorot, Disk drive having a stationary plate between disks with grooves adjacent fastener holes.
  11. Smyth, Nicholas D.; Myers, David K., Disk drive having a top cover channel vented to a central cavity via a hole through a bottom land.
  12. Smyth, Nicholas D.; Myers, David K., Disk drive having a top cover channel vented to a central cavity via a peripheral clearance gap.
  13. Pan, Tzong-Shii; Chen, Yih-Jen Dennis; Shum, Wing Chun, Disk drive head gimbal assembly having a flexure tail with a dielectric layer that has regions of lesser thickness.
  14. Pan, Tzong-Shii; Zhang, Cliff, Disk drive head stack assembly having a flexible printed circuit with bond pads having reduced capacitance.
  15. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with a noble metal layer disposed on a plurality of structural backing islands.
  16. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with a noble metal layer disposed on a plurality of structural backing islands.
  17. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with ground pad outside of bonding region.
  18. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
  19. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
  20. Chen, Yih-Jen Dennis; Pan, Tzong-Shii, Disk drive head suspension with a dual dimple and a flexure tongue with a piezoelectric microactuator.
  21. Gleason, Andrew J.; Dunckley, James A.; Miles, Robert J., Disk drive load/unload ramp with integrated air features.
  22. Kloeppel, Klaus; Ilagan, Ronald G.; Nguyen, Diep L., Disk drive spindle with fluid journal bearing having increased radial clearance in axial end regions.
  23. Pan, Tzong-Shii, Disk drive system.
  24. Parker, Joshua; Petersen, Frederic C.; Couture, Shawn P.; Kuniyil, Prabheesh Balakrishnan; Nykanen, Bob A., Disk drive tolerance ring with edge rounding from opposite major faces.
  25. Sill, Kevin R.; Little, Aaron D., Disk drive with self sealing screw attachment of actuator pivot.
  26. Gustafson, John R.; Patel, Mukesh, Disk drive with slow acting desiccant.
  27. Yu, William Wei Yi; Huang, Lidu; Hall, Perry E.; Watson, Scott E.; Allen, Kenneth; Lo, Lawrence H.; Myers, David K., Disk drive with translatable ramp.
  28. Kloeppel, Klaus, Grooved cylindrical seal with increased radial clearance for reduced cost disk drive spindle.
  29. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with a helium sealed gasket.
  30. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with feed through flexure design and accompanying flexure.
  31. Shum, Wing Chun; Liu, Yanning; Scura, John E., Head gimbal assembly having a flexure tail with cover layer standoff islands.
  32. Pan, Tzong-Shii; Ho, Shufun, Head stack assembly with a flexible printed circuit having a mouth centered between arms.
  33. Pan, Tzong-Shii, Head suspension having a flexure tail with a covered conductive layer and structural layer bond pads.
  34. Casey, Shawn E.; Tian, Jifang; Campbell, Tegan; Li, Hongqi; Flynn, William, Information storage device with a damping insert sheet between a housing bay and a disk drive.
  35. Hanke, Frederick J., Information-storage device including an oxygen absorbing device.
  36. Yamanouchi, Hidetake, Load/unload mechanism stably holding head slider in recording disk drive.
  37. Yoshida, Takeshi; Hamaguchi, Tetsuya; Ishii, Tomokazu; Saegusa, Shozo; Higuchi, Shinsuke, Magnetic disk drive with a movable ramp mechanism for relieving impact upon loading and unloading.
  38. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator connected to a ramp.
  39. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator fin material to prevent particulate contamination on slider.
  40. Novotny, Vlad; Berding, Keith R., Magnetic recording drives with active photocatalytic filtration.
  41. Klassen, Andrew S., Manufacturing assembly for manufacturing a disk drive.
  42. Perlas, Joseph A.; Vangal-Ramamurthy, Jambunathan, Method of imbalance correction using a grooved disk clamp.
  43. Pan, Tzong-Shii; Magsombol, Fernando A., Method of manufacturing a disk drive head gimbal assembly having a flexure tail with folded bond pads.
  44. Chen, Jian J.; Yong, Pow Hing; Ng, Siew Ming; Jierapipatanakul, Niroot, Retaining slide-in ramp for hard disk drive.
  45. Nguyen, Diep L.; Ilagan, Ronald G.; Kloeppel, Klaus, Rotary spindle having a disk clamp bottom land facing and in contact with a shaft top land.
  46. Radavicius, Arturas; Congdon, Craig W., Shipping comb and ramp for disk drive assembly.
  47. Watson, Scott E.; Lee, Yau-Shing; Hitchner, Thomas J.; Myers, David K., Slim form factor disk drive comprising disk drive enclosure having an insular raised region.
  48. Davidson, Marc; Krishnan, Varuvadivelan; Tan, Siu Ken; Kok, Kin Lim, Sloping transition on a ramp of a hard disk drive.
  49. Dougherty, Mitchell D., Spindle motor magnet diameter increase above head plane.
  50. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
  51. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
  52. Liu, Yanning; Shum, Wing C.; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
  53. Liu, Yanning; Shum, Wing Chun; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
  54. Seymour, Mark S.; Dougherty, Mitchell D.; Banshak, Jr., Walter G.; Hales, Geoffrey A., Suspension clamp for clamping a disk drive suspension to an actuator arm.
  55. Ramsdell,Richard G., System and method to provide a ramp having a location which is transitioning from a first grade to a second grade for removing a read/write head from a media.
  56. Tafreshi, Shahriar A.; Lee, Yu-Min, Tamper-evident seals having adhesive-free areas to minimize rework time.
  57. Heo, Baekho; Weiher, Joshua P., Threaded disk clamping element with step on disk contact surface.
  58. Foisy, Gregory G., Transport comb for head stack assembly.
  59. Foisy, Gregory G., Transport comb for head stack assembly.
  60. Tian, Jifang; Yang, Jian; Yang, Qiang, Ultra-thin HDD embedded disk clamp design.
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