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Disk drive including strain transducer for detecting mechanical shock 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G11B-021/02
출원번호 US-0177898 (1998-10-23)
발명자 / 주소
  • Charles R. Patton, III
  • Barry L. Klein
출원인 / 주소
  • Western Digital Technologies, Inc.
대리인 / 주소
    Milad G Shara, Esq.
인용정보 피인용 횟수 : 54  인용 특허 : 9

초록

A disk drive includes a head disk assembly having a housing including a first surface area, and a strain transducer for producing a strain signal representing strain in the first surface area due to a mechanical shock on the disk drive. The strain transducer includes a first electrode, a second elec

대표청구항

1. A disk drive being subject to a mechanical shock during a write operation in the disk drive, the disk drive comprising:a head disk assembly having a housing including a first surface area; a strain transducer for producing a strain signal representing strain in the first surface area due to the m

이 특허에 인용된 특허 (9)

  1. Richards John H. (San Jose CA) Schuh Karl D. (San Jose CA), Apparatus and method for preventing data corruption in disk drives from mechanical shock during write operations.
  2. Smith Robert F. (San Jose CA), Apparatus for sensing operating shock on a disk drive.
  3. Smith Robert F. (San Jose CA), Apparatus for sensing operating shock on a disk drive.
  4. Lee Chih-Kung (Cupertino CA) Munce ; Jr. Archibald C. (San Jose CA) O\Sullivan Timothy C. (San Jose CA), Disk drive with accerleration rate sensing.
  5. Patton Charles R. (Murietta CA) Edwards John R. (Mountain View CA) Sareen Anil (Mission Viejo CA), Hard disk drive which uses the back EMF of the actuator to detect shocks.
  6. Schaenzer Mark J. ; Boutaghou Zine-Eddine ; Huang He, Internal accelerometer for improved servo performance and shock sensing on high performance disc drive heads.
  7. Lee Chih-Kung (Sunnyvale CA) Moon Francis C. (Ithaca NY), Piezoelectric polymer laminates for torsional and bending modal control.
  8. Genheimer Stephen R. (Yukon OK) Pottebaum Ken L. (Yukon OK), Shock load detection device.
  9. Klein Enrique J. (1686 Christina Dr. Los Altos CA 94022), Torsion transducer for magnetic storage disk drives.

이 특허를 인용한 특허 (54)

  1. Codilian,Raffi; Ngo,Lan V.; Gardner,Norman D., Acceleration disturbance detection subsystem for use with disk drives.
  2. Nguyen, Daniel T.; Sill, Kevin R., Actuator pivot assembly including a bonding adhesive barrier configured to reduce contamination.
  3. Chen, Yih-Jen D.; McNab, Robert J., Apparatus for manufacturing piezoelectric actuators.
  4. 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.
  5. Lim,BengSee; Chee,WaiOnn; Lee,PeiKoh; Pang,Jimmy TzeMing; Ong,BoonSeng; Jierapipatanakul,Niroot, Data storage device with shock sensor mounted on circuit board and provided adjacent shield and disc assembly protrusions.
  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. Mani Biswas, Mousumi, Disk drive filter including fluorinated and non-fluorinated nanopourous organic framework materials.
  9. Gustafson, John R.; Patel, Mukesh, Disk drive having a conformal peripheral foil seal having an opening covered by a central metal cap.
  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. Kloeppel, Klaus; Ilagan, Ronald G.; Nguyen, Diep L., Disk drive spindle with fluid journal bearing having increased radial clearance in axial end regions.
  22. Pan, Tzong-Shii, Disk drive system.
  23. 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.
  24. Sill, Kevin R.; Little, Aaron D., Disk drive with self sealing screw attachment of actuator pivot.
  25. Gustafson, John R.; Patel, Mukesh, Disk drive with slow acting desiccant.
  26. Kloeppel, Klaus, Grooved cylindrical seal with increased radial clearance for reduced cost disk drive spindle.
  27. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with a helium sealed gasket.
  28. Le, Lynn Bich-Quy; Hitchner, Thomas J., Hard disk drive enclosure base with feed through flexure design and accompanying flexure.
  29. Shum, Wing Chun; Liu, Yanning; Scura, John E., Head gimbal assembly having a flexure tail with cover layer standoff islands.
  30. Pan, Tzong-Shii; Ho, Shufun, Head stack assembly with a flexible printed circuit having a mouth centered between arms.
  31. Pan, Tzong-Shii, Head suspension having a flexure tail with a covered conductive layer and structural layer bond pads.
  32. 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.
  33. Hanke, Frederick J., Information-storage device including an oxygen absorbing device.
  34. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator connected to a ramp.
  35. Davidson, Marc; Myers, David K.; Willis, Terrance J., Magnetic head separator fin material to prevent particulate contamination on slider.
  36. Novotny, Vlad; Berding, Keith R., Magnetic recording drives with active photocatalytic filtration.
  37. Perlas, Joseph A.; Vangal-Ramamurthy, Jambunathan, Method of imbalance correction using a grooved disk clamp.
  38. Pan, Tzong-Shii; Magsombol, Fernando A., Method of manufacturing a disk drive head gimbal assembly having a flexure tail with folded bond pads.
  39. Li,Yunfeng; Schreck,Erhard; Guo,Wei; Glassburn,Tim; Heimbaugh,Mark; Flynn,William; Northrup,Oliver; Scura,John E.; Guo,Lin; Chew,Xiaokun, Mobile hard disk drive free fall detection and protection.
  40. Levine, Frank Eliot, Processing access requests for a disk drive.
  41. 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.
  42. Ryan, Robert P.; Scura, John E.; Eklund, Erik J.; Kung, May C.; Guerini, Albert J.; Liebman, Michael K., Shock sensor on an external surface of a disk drive base adjacent a disk drive printed circuit board.
  43. 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.
  44. Davidson, Marc; Krishnan, Varuvadivelan; Tan, Siu Ken; Kok, Kin Lim, Sloping transition on a ramp of a hard disk drive.
  45. Dougherty, Mitchell D., Spindle motor magnet diameter increase above head plane.
  46. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
  47. Smyth, Nicholas D.; Nguyen, Daniel T.; Myers, David K., Storage device with a cover supporting portion.
  48. Liu, Yanning; Shum, Wing C.; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
  49. Liu, Yanning; Shum, Wing Chun; Scura, John E., Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface.
  50. 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.
  51. Tafreshi, Shahriar A.; Lee, Yu-Min, Tamper-evident seals having adhesive-free areas to minimize rework time.
  52. Heo, Baekho; Weiher, Joshua P., Threaded disk clamping element with step on disk contact surface.
  53. Tian, Jifang; Yang, Jian; Yang, Qiang, Ultra-thin HDD embedded disk clamp design.
  54. Flynn,William; Guo,Wei; Heimbaugh,Mark; Li,Yunfeng, Zero-g offset identification of an accelerometer employed in a hard disk drive.
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