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    21.
    发明专利
    未知

    公开(公告)号：DE2825107A1

    公开(公告)日：1979-01-04

    申请号：DE2825107

    申请日：1978-06-08

    Applicant: IBM

    Inventor： HATCHETT MICHAEL ROBERT ,  RIGBEY LEONARD JOHN

    IPC: G11B17/022 ,  G11B23/033 ,  G11B17/04 ,  G11B5/016 ,  G06F3/06

    Abstract: A record disk cartridge has a single internal shutter for opening and closing a head access port adjacent a spindle access member in one wall. A further aperture allows the shutter to be actuated to an open position as the cartridge is moved into a playing position. The shutter also brakes the disk against movement when the cartridge apertures are closed. A magnetic coupling enables rotation of the disk inside the cartridge.

    24.
    发明专利
    未知

    公开(公告)号：DE69318605D1

    公开(公告)日：1998-06-25

    申请号：DE69318605

    申请日：1993-03-02

    Applicant: IBM

    Inventor： HATCHETT MICHAEL ROBERT ,  HEATH JOHN STEWART ,  LEE HUBERT CHEW ,  ROW EUN KYOUNG ,  SPENCER ROGER DALE ,  WORKMAN MICHAEL LEE

    IPC: G11B20/18 ,  G11B25/04 ,  G11B33/08 ,  G11B33/12 ,  G11B33/14 ,  G11B33/04

    Abstract: A multiple disk drive assembly (10) in a 5 1/4 inch disk drive form factor having two 3 1/2 inch disk drive form factor head-disk assemblies (HDA) (11, 13) internally mounted on a rigid frame (15) and accessible via a common industry-standard interface connector (55) is provided. Both the interface and power connectors (55 and 53 respectively) and the frame mounting hole patterns are industry standard to provide interchangeability with 5 1/4 inch form factor disk drives provided by manufacturers for use in computer systems. A single electronics controller board (17) is shared by both HDAs and is mounted on the bottom side of the frame below the HDAs. The controller board may implement SCSI or IPI interfaces in either differential or single-ended versions. A spring vibration damper (47) is utilized to minimize external vibration and shock effects on the HDAs and also to minimize the effects of vibration internally generated by one HDA on the adjacent HDA. The assembly is fully enclosed with metal top and bottom covers (19 and 21 respectively) to provide separate enclosures for the HDAs and the controller board cooling and to provide EMC and RFI protection.

    25.
    发明专利
    未知

    公开(公告)号：DE69106403D1

    公开(公告)日：1995-02-16

    申请号：DE69106403

    申请日：1991-02-04

    Applicant: IBM

    Inventor： HEARN ANTHONY ROGER ,  DEW GRAHAM NIGEL ,  HATCHETT MICHAEL ROBERT ,  HALL MICHAEL WILLIAM ,  TAYLOR MICHAEL GEORGE

    IPC: G11B33/08 ,  G11B33/12

    Abstract: A disk file comprises a head disk enclosure 1 connected to a support frame by a plurality of isolation mounts. Each isolation mount comprises a constrained layer flexure 23 which is rigidly attached at both ends to a bracket 25 of the support frame. Located in an aperture in the constrained layer flexure is a resilient grommet 24. This grommet supports a bolt 27 which passes through the grommet and into the head-disk enclosure casting.

    26.
    发明专利
    未知

    公开(公告)号：DE3581544D1

    公开(公告)日：1991-02-28

    申请号：DE3581544

    申请日：1985-10-31

    Applicant: IBM

    Inventor： CASTLE FRANK ERIC ,  HATCHETT COLIN PETER ,  HATCHETT MICHAEL ROBERT ,  HEATH JOHN STEWART

    IPC: G11B17/038 ,  G11B21/02 ,  G11B25/04 ,  G11B33/14 ,  G11B23/03

    Abstract: A disk file comprises a disk stack subassembly (10) and a head positioning actuator (50) each mounted on opposite sides of a central box frame (81). The disk stack subassembly (10) has a non-rotating central spindle (11) and an in-hub electric motor (30) whose stator (32) is mounted on the spindle (11). The rotor (31) of the motor (30) is mounted internally of a hub (15) supported for rotation about the spindle by two bearings (16, 17) at opposite ends of the spindle (11). A stack of disks (18) is mounted externally on the hub (15). The box frame (81) is open to one side and the opposite ends of the stationary spindle (11) are located and fixed in the frame (81) so that the disk stack subassembly (10) spans the open side. Because of the symmetry and rigidity of the design, susceptibility to thermal or vibration induced misregistration is reduced. Finally a cover (90) completes the enclosure.

    27.
    发明专利
    未知

    公开(公告)号：BR8605304A

    公开(公告)日：1987-07-28

    申请号：BR8605304

    申请日：1986-10-29

    Applicant: IBM

    Inventor： CASTLE FRANK ERIC ,  HATCHETT COLIN PETER ,  HATCHETT MICHAEL ROBERT ,  HEATH JOHN STEWART

    IPC: G11B17/038 ,  G11B21/02 ,  G11B25/04 ,  G11B33/14 ,  G11B17/08

    Abstract: A disk file comprises a disk stack subassembly (10) and a head positioning actuator (50) each mounted on opposite sides of a central box frame (81). The disk stack subassembly (10) has a non-rotating central spindle (11) and an in-hub electric motor (30) whose stator (32) is mounted on the spindle (11). The rotor (31) of the motor (30) is mounted internally of a hub (15) supported for rotation about the spindle by two bearings (16, 17) at opposite ends of the spindle (11). A stack of disks (18) is mounted externally on the hub (15). The box frame (81) is open to one side and the opposite ends of the stationary spindle (11) are located and fixed in the frame (81) so that the disk stack subassembly (10) spans the open side. Because of the symmetry and rigidity of the design, susceptibility to thermal or vibration induced misregistration is reduced. Finally a cover (90) completes the enclosure.

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