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Method of making a balance-compensated rotary actuator based upon track-follow performance of a rotatable test head stack assembly portion

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G11B-005/42
출원번호 US-0584837 (2000-05-31)
발명자 / 주소
  • Raffi Codilian
  • Shawn E. Casey
출원인 / 주소
  • Western Digital Technologies, Inc.
대리인 / 주소
    Milad G Shara
인용정보 피인용 횟수 : 57  인용 특허 : 2

초록

A method of making a balance-compensated (BC) rotary actuator for use in a rotatable BC head stack assembly (HSA) portion in a disk drive based upon track-follow characteristics of a rotatable test HSA portion is provided. The test HSA portion includes a test rotary actuator having a test actuator w

대표청구항

1. A method of making a balance-compensated (BC) rotary actuator for use in a rotatable BC head stack assembly (HSA) portion in a disk drive based upon track-follow performance of a rotatable test HSA portion, the test HSA portion including a test rotary actuator having a test actuator weight distri

이 특허에 인용된 특허 (2)

  1. Moon William G. (Sunnyvale CA) Westwood Donald C. (Cupertino CA) Stone Thomas R. (Pleasanton CA), Compact head and disk assembly.
  2. Butler Walter Wayne ; Hassibi Payman ; Hathaway Mark A. ; Ogle Tami ; Narayanan Sudha, Head stack assembly for a magnetic disk drive with a pass-through flex circuit cable.

이 특허를 인용한 특허 (57)

  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. Zhang, Qing; Li, Hongqi; Myers, David K.; Mylabathula, Enoch, Depopulated disk drive head stack assembly having a necked dummy mass with relief alcoves.
  5. Foisy, Gregory G.; Xu, Huijie, Depopulated head stack assembly having a necked dummy mass.
  6. Tian, Jifang; Li, Hongqi; Flynn, William; Hu, Xiaoping; Obregon, Francisco, Devices and methods for system-level disk drive vibration and shock testing.
  7. Lee, Yu-Min; Zheng, Hao; Griggs, Ian; Tran, Gregory, Disk drive actuator having a radially stepped pivot bore.
  8. Dominguez, Jr.,Miguel; Misra,Ambrish; Radwan,Hatem, Disk drive actuator-pivot assembly with corrugated rings.
  9. Mani Biswas, Mousumi, Disk drive filter including fluorinated and non-fluorinated nanopourous organic framework materials.
  10. Gustafson, John R.; Patel, Mukesh, Disk drive having a conformal peripheral foil seal having an opening covered by a central metal cap.
  11. Yi,Li; Melkote,Hemant, Disk drive having a servo control system optimized for faster determination of repeatable runout correction values and related method.
  12. Horasart, Theerapong; Bupphasawan, Meatasit; Chaiboon, Chinorot, Disk drive having a stationary plate between disks with grooves adjacent fastener holes.
  13. 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.
  14. Smyth, Nicholas D.; Myers, David K., Disk drive having a top cover channel vented to a central cavity via a peripheral clearance gap.
  15. Norton, Amir; Klerks, August L., Disk drive having a vibration absorber with fixed free ends.
  16. 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.
  17. Pan, Tzong-Shii; Zhang, Cliff, Disk drive head stack assembly having a flexible printed circuit with bond pads having reduced capacitance.
  18. 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.
  19. 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.
  20. Chen, Yih-Jen Dennis; Liu, Yanning; Teo, Kia Moh, Disk drive head suspension tail with ground pad outside of bonding region.
  21. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
  22. Chen, Yih-Jen D.; Pan, Tzong-Shii, Disk drive head suspension tail with stiffened edge alignment features.
  23. Chen, Yih-Jen Dennis; Pan, Tzong-Shii, Disk drive head suspension with a dual dimple and a flexure tongue with a piezoelectric microactuator.
  24. Kloeppel, Klaus; Ilagan, Ronald G.; Nguyen, Diep L., Disk drive spindle with fluid journal bearing having increased radial clearance in axial end regions.
  25. Pan, Tzong-Shii, Disk drive system.
  26. 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.
  27. Sill, Kevin R.; Little, Aaron D., Disk drive with self sealing screw attachment of actuator pivot.
  28. Gustafson, John R.; Patel, Mukesh, Disk drive with slow acting desiccant.
  29. Thia, Terang KongBeng; Lau, Joseph HengTung; Sim, Jeffrey SoonBeng; Kuan, Stephen KowChiew; SeeToh, CheeWai, Drive level actuator imbalance torque test.
  30. Brause, David D.; Rappel, Brian L.; Bogacz, Chad A., Flexible electrical interconnection with ends urged into engagement with curved surfaces of a support and hub in a miniature hard disk drive and method.
  31. Kloeppel, Klaus, Grooved cylindrical seal with increased radial clearance for reduced cost disk drive spindle.
  32. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with a helium sealed gasket.
  33. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with feed through flexure design and accompanying flexure.
  34. Shum, Wing Chun; Liu, Yanning; Scura, John E., Head gimbal assembly having a flexure tail with cover layer standoff islands.
  35. Pan, Tzong-Shii; Ho, Shufun, Head stack assembly with a flexible printed circuit having a mouth centered between arms.
  36. Pan, Tzong-Shii, Head suspension having a flexure tail with a covered conductive layer and structural layer bond pads.
  37. 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.
  38. Hanke, Frederick J., Information-storage device including an oxygen absorbing device.
  39. Casey, Shawn E.; Codilian, Raffi; Davis, Roger G.; Haro, Jorge, METHOD AND APPARATUS FOR BALANCING A ROTARY ACTUATOR BY MODIFYING WEIGHT DISTRIBUTION CHARACTERISTICS OF THE ROTARY ACTUATOR FOR LOCATING AN INSTALLED HEAD STACK ASSEMBLY PORTION CENTER-OF-GRAVITY AL.
  40. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator connected to a ramp.
  41. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator fin material to prevent particulate contamination on slider.
  42. Novotny, Vlad; Berding, Keith R., Magnetic recording drives with active photocatalytic filtration.
  43. Codilian, Raffi; Melkote, Hemant; Agarwal, Vinay K., Method for determining repeatable runout cancellation values in a magnetic disk drive using filtering.
  44. Perlas, Joseph A.; Vangal-Ramamurthy, Jambunathan, Method of imbalance correction using a grooved disk clamp.
  45. Pan, Tzong-Shii; Magsombol, Fernando A., Method of manufacturing a disk drive head gimbal assembly having a flexure tail with folded bond pads.
  46. 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.
  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. Tafreshi, Shahriar A.; Lee, Yu-Min, Tamper-evident seals having adhesive-free areas to minimize rework time.
  56. Heo, Baekho; Weiher, Joshua P., Threaded disk clamping element with step on disk contact surface.
  57. Tian, Jifang; Yang, Jian; Yang, Qiang, Ultra-thin HDD embedded disk clamp design.
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