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公开(公告)号：DE69318605T2
公开(公告)日：1999-02-04
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
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.
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公开(公告)号：AT166486T
公开(公告)日：1998-06-15
申请号：AT93301584
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
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.
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公开(公告)号：GB2266805A
公开(公告)日：1993-11-10
申请号：GB9207304
申请日：1992-04-03
Applicant: IBM
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公开(公告)号：AU615376B2
公开(公告)日：1991-09-26
申请号：AU5050990
申请日：1990-02-26
Applicant: IBM
Inventor： HATCHETT MICHAEL ROBERT , HEARN ANTHONY ROGER , HEATH JOHN STEWART , LACEY CHARLES MICHAEL , LAREK THADDEUS LOUIS , REIDENBACH JOHN RALPH , SCHWIETERS CLARENCE RAYMOND
Abstract: A linear actuator for positioning the heads of a disk file relative to tracks on the disks employs a ceramic material having wear properties superior to steel in guide surfaces for guiding a head supporting carriage running on rotary bearings in contact with the guide surfaces. The preferred ceramic material is tetragonally stabilized zirconia.
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公开(公告)号：AU527115B2
公开(公告)日：1983-02-17
申请号：AU5039679
申请日：1979-08-29
Applicant: IBM
Inventor： HEATH JOHN STEWART
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Patent Agency Ranking
公开(公告)号：DE69013188T2
公开(公告)日：1995-05-11
申请号：DE69013188
申请日：1990-03-08
Applicant: IBM
Inventor： HATCHETT MICHAEL ROBERT , HEARN ANTHONY ROGER , HEATH JOHN STEWART , LACEY CHARLES MICHAEL , LAREK THADDEUS LOUIS , REIDENBACH JOHN RALPH , SCWIETERS CLARENCE RAYMOND
Abstract: A linear actuator for positioning the heads of a disk file relative to tracks on the disks employs a ceramic material having wear properties superior to steel in guide surfaces for guiding a head supporting carriage running on rotary bearings in contact with the guide surfaces. The preferred ceramic material is tetragonally stabilized zirconia.
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7.发明专利
公开(公告)号：DE3374477D1
公开(公告)日：1987-12-17
申请号：DE3374477
申请日：1983-12-21
Applicant: IBM
Inventor： CAREY PAUL DAVID , CUTTS STANLEY JOHN , HEATH JOHN STEWART , WHITE DAVID ERIC , EVANS DAVID ANTHONY
IPC: G11B17/32 , G11B23/033 , G11B23/02
Abstract: A disc cartridge file uses a cartridge (1) which is rigid enclosure containing a flexible information storage disc (2) mounted in a drive hub (3). One wall (11) has a central hub drive aperture (13) and an arcuate, radially-extending access slot (15) for a read/write transducer. In operation, the disc flies over the inner surface of the apertured wall or an air bearing. This surface is planar over a major portion including the access slot (15) but has a smoothly contoured raised land (29) bordering the slot on the downstream side. The land (29) extends the range of penetration over which the transducer is coupled, partic. at the outer dia. of the disc.
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公开(公告)号：AU3278971A
公开(公告)日：1973-03-01
申请号：AU3278971
申请日：1971-08-26
Applicant: IBM
Inventor： CUZNER DAVID EVERARD , DODMAN CHARLES OWEN REARDON , HEATH JOHN STEWART , RIGBEY LEO JOHN , GEORGE IAN CHARLES , CROUCH HOWARD STANLEY
IPC: G11B5/48 , G11B5/55 , G11B17/028 , G11B23/02 , G11B23/50 , H02K41/035 , G11B21/02
Abstract: A magnetic disc apparatus including a sealed module which encloses magnetic discs, magnetic heads attached to head arm assemblies, an electromagnetic actuator for positioning the magnetic heads on the head arm assemblies, and a drive spindle on which the discs are seated. All control of the positioning of the head arm assembly, the operation of the electromagnetic actuator and the read write function being provided by electrical signals communicated between the file housing and the sealed module. A drive motor within the file housing is coupled to the enclosed spindle, which extends from the module while maintaining the module seal, for providing only rotary motion to the discs attached to the spindle.
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公开(公告)号：GB1276969A
公开(公告)日：1972-06-07
申请号：GB5825970
申请日：1970-12-08
Applicant: IBM
Inventor： DAVY JOHN COLIN , HEATH JOHN STEWART
Abstract: 1276969 Head supports for magnetic disc records INTERNATIONAL BUSINESS MACHINES CORP 8 Dec 1970 58259/70 Heading G5R Heads 19, Fig. 2, or 31, Fig. 4, are mounted on a radially-extending strut 21 or 41, which lies close enough to the record disc 13 to share in any rise in temperature of the disc and is supported on an axis 23 passing through the axis of rotation of the disc. The heating of the strut may be speeded by an electrical heater 27 mounted thereon. The position of the heads 31, Fig. 4, may be adjusted by means of a lead screw 33.
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公开(公告)号：HK15295A
公开(公告)日：1995-02-10
申请号：HK15295
申请日：1995-02-06
Applicant: IBM
Inventor： HATCHETT MICHAEL ROBERT , HEARN ANTHONY ROGER , HEATH JOHN STEWART , LACEY CHARLES MICHAEL , LAREK THADDEUS LOUIS , REIDENBACH JOHN RALPH , SCWIETERS CLARENCE RAYMOND
Abstract: A linear actuator for positioning the heads of a disk file relative to tracks on the disks employs a ceramic material having wear properties superior to steel in guide surfaces for guiding a head supporting carriage running on rotary bearings in contact with the guide surfaces. The preferred ceramic material is tetragonally stabilized zirconia.
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