GB2361578A - Inertia ring for improved rotational vibration performance - Google Patents

Inertia ring for improved rotational vibration performance

Info

Publication number
GB2361578A
GB2361578A GB0116183A GB0116183A GB2361578A GB 2361578 A GB2361578 A GB 2361578A GB 0116183 A GB0116183 A GB 0116183A GB 0116183 A GB0116183 A GB 0116183A GB 2361578 A GB2361578 A GB 2361578A
Authority
GB
United Kingdom
Prior art keywords
base
cover
inertia ring
attached
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0116183A
Other versions
GB0116183D0 (en
GB2361578B (en
Inventor
Kent J Forbord
Michael D Schroeder
Chayakorn Thanomsat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Priority claimed from PCT/US2000/010582 external-priority patent/WO2000063919A1/en
Publication of GB0116183D0 publication Critical patent/GB0116183D0/en
Publication of GB2361578A publication Critical patent/GB2361578A/en
Application granted granted Critical
Publication of GB2361578B publication Critical patent/GB2361578B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds

Abstract

A disc drive includes a base and a disc rotatably attached to the base. The disc drive also includes an actuator assembly rotatably attached to said base and a device for moving the actuator assembly. A cover is attached to the base. The combination of the cover and base form a disc enclosure for enclosing the disc the actuator assembly and the device for moving the actuator assembly. An inertia ring is attached to the disc enclosure for increasing the moment of inertia of the base and cover. The inertia ring may be attached to the cover or to the base. The inertia ring may be formed of a material which is more dense than the cover or more dense than the base. The inertia ring may also be formed integral with the base or the cover. The inertia ring may also be formed such that the material is positioned near the periphery of the base and attached cover. A damped interface between the inertia ring and the base or cover may further reduce movement of the base with respect to the actuator.
GB0116183A 1999-04-21 2000-04-20 Inertia ring for improved rotational vibration performance Expired - Fee Related GB2361578B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13029299P 1999-04-21 1999-04-21
PCT/US2000/010582 WO2000063919A1 (en) 1999-04-21 2000-04-20 Inertia ring for improved rotational vibration performance

Publications (3)

Publication Number Publication Date
GB0116183D0 GB0116183D0 (en) 2001-08-22
GB2361578A true GB2361578A (en) 2001-10-24
GB2361578B GB2361578B (en) 2003-08-06

Family

ID=22443998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0116183A Expired - Fee Related GB2361578B (en) 1999-04-21 2000-04-20 Inertia ring for improved rotational vibration performance

Country Status (2)

Country Link
DE (1) DE10084347T1 (en)
GB (1) GB2361578B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214549A (en) * 1991-07-12 1993-05-25 Seagate Technology, Inc. Acoustically damped disc drive assembly
US5282100A (en) * 1992-01-22 1994-01-25 Quantum Corporation Disk drive with reduced acoustic noise
US5469311A (en) * 1991-03-15 1995-11-21 Hitachi, Ltd. Vibration absorbing structure for a magnetic disk apparatus
US5598306A (en) * 1994-07-29 1997-01-28 International Business Machines Corporation Damping post for reducing acoustic noise in a disk drive
EP0780845A1 (en) * 1995-12-18 1997-06-25 Hitachi, Ltd. Rotary information recording and reproduction apparatus
US5781373A (en) * 1997-03-14 1998-07-14 Western Digital Corporation Acoustic noise reduction system for a disk drive
JPH10214480A (en) * 1997-01-30 1998-08-11 Samsung Electron Co Ltd Cover for reproducing device for recording carrier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469311A (en) * 1991-03-15 1995-11-21 Hitachi, Ltd. Vibration absorbing structure for a magnetic disk apparatus
US5214549A (en) * 1991-07-12 1993-05-25 Seagate Technology, Inc. Acoustically damped disc drive assembly
US5282100A (en) * 1992-01-22 1994-01-25 Quantum Corporation Disk drive with reduced acoustic noise
US5598306A (en) * 1994-07-29 1997-01-28 International Business Machines Corporation Damping post for reducing acoustic noise in a disk drive
EP0780845A1 (en) * 1995-12-18 1997-06-25 Hitachi, Ltd. Rotary information recording and reproduction apparatus
JPH10214480A (en) * 1997-01-30 1998-08-11 Samsung Electron Co Ltd Cover for reproducing device for recording carrier
US5781373A (en) * 1997-03-14 1998-07-14 Western Digital Corporation Acoustic noise reduction system for a disk drive

Also Published As

Publication number Publication date
GB0116183D0 (en) 2001-08-22
GB2361578B (en) 2003-08-06
DE10084347T1 (en) 2002-03-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070420