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公开(公告)号：CA1068400A
公开(公告)日：1979-12-18
申请号：CA249501
申请日：1976-04-02
Applicant: IBM
Inventor： GRIFFITHS DONALD E , KOESTNER JOSEPH H , NORTON DAVID G
Abstract: STACKED FLEXIBLE DISK STRUCTURES Semi-rigid washers are coaxially disposed to form an air-permeable spindle for coaxially supporting flexible record disks. A plurality of such washers and disks is coaxially stacked to construct a flexible disk file. Washers preferably have an annular shoulder with a depth slightly different than the thickness of the record disks for firmly supporting and aligning same in the coaxial stack. Alternatively, disks may be adhesively secured to a radial outward portion of each washer. Additionally, each washer has a plurality of radially extending air passageways for facilitating radial air movement which controls the stack of flexible record disks. A radial inward portion of each washer abuts each adjacent washer for forming a firm axial stack of disks. A rigid stabilizing plate at each axial end completes the assembly. The present invention is an improvement over that shown by Penfold et al in commonly assigned, copending Canadian application Serial Number 211,526 filed October 16, 1974, and entitled "Multiple Flexible Disk File".
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公开(公告)号：CA1038492A
公开(公告)日：1978-09-12
申请号：CA225807
申请日：1975-04-23
Applicant: IBM
Inventor： GRIFFITHS DONALD E , KOESTNER JOSEPH H , NORTON DAVID G
IPC: G11B17/32 , G11B5/02 , G11B5/55 , G11B17/02 , G11B17/22 , G11B17/30 , G11B21/02 , G11B25/04 , G11B5/82 , G11B5/54
Abstract: STACKED FLEXIBLE RECORD DISK STORAGE APPARATUS HAVING ENHANCED DISK SEPARATION USING A PRIMARY BENDING MODE IN A STACK OF DISKS A signal storage apparatus employs a stack of circular record disks accessible by axially separating segments of selected disks in the stack. One disk in a stack of coaxial rotatable circular compliant record disks is accessed with a minimum energy imparted to such disks by a chord roll disk separator. In a preferred form, the chord roll disk separator induces a primary bending mode to some of the disks being axially separated. In another aspect of the disclosure, a signal transducer is mounted integrally with the disk separator. With such mounting, primary, secondary, or higher order bending modes may be successfully employed. Full chordal and partial chordal axial disk separations are described. Arcuate and radially directed separation techniques may be employed. A unique axial stacking arrangement for compliant record disks is also described.
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公开(公告)号：CA1038491A
公开(公告)日：1978-09-12
申请号：CA225806
申请日：1975-04-23
Applicant: IBM
Inventor： GRIFFITHS DONALD E , KOESTNER JOSEPH H , NORTON DAVID G
IPC: G11B17/32 , G11B5/02 , G11B5/55 , G11B17/02 , G11B17/22 , G11B17/30 , G11B21/02 , G11B25/04 , G11B5/82 , G11B5/54
Abstract: STACKED FLEXIBLE RECORD DISK STORAGE APPARATUS HAVING ENHANCED DISK SEPARATION WITH TRANSDUCER MOUNTED IN DISK SEPARATOR A signal storage apparatus employs a stack of circular record disks accessible by axially separating segments of selected disks in the stack. One disk in a stack of coaxial rotatable circular compliant record disks is accessed with a minimum energy imparted to such disks by a chord roll disk separator. In a preferred form, the chord roll disk separator induces a primary bending mode to some of the disks being axially separated. In another aspect of the disclosure, a signal transducer is mounted integrally with the disk separator. With such mounting, primary, secondary, or higher order bending modes may be successfully employed. Full chordal and partial chordal axial disk separations are described. Arcuate and radially directed separation techniques may be employed. A unique axial stacking arrangement for compliant record disks is also described.
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Patent Agency Ranking
公开(公告)号：FR2275845A1
公开(公告)日：1976-01-16
申请号：FR7515090
申请日：1975-05-06
Applicant: IBM
Inventor： GRIFFITHS DONALD E , KOESTNER JOSEPH H , NORTON DAVID G
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公开(公告)号：FR2363163A1
公开(公告)日：1978-03-24
申请号：FR7718262
申请日：1977-06-09
Applicant: IBM
Inventor： NORTON DAVID G , WRIGHT GARY T
Abstract: Improved magnetic recording apparatus having a rotating flexible registration disc disposed on a flat plate, characterized in that: said flat plate has an elongated throat that opens into said flexible recording disk and has a substantial radial length; a transducer disposed movably to perform radial displacements in said throat; to perform transduction operations with respect to said flexible registration disk; and downward traction means having pneumatic upstream and downstream pneumatic support means, extending from said flat plate towards said flexible recording memory disk and disposed respectively along said throat, opposite sides thereof, for communicating a pulling force downwardly on said flexible recording disk, towards said transducer. (Machine-translation by Google Translate, not legally binding)
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公开(公告)号：CA1106495A
公开(公告)日：1981-08-04
申请号：CA283190
申请日：1977-07-20
Applicant: IBM
Inventor： NORTON DAVID G , WRIGHT GARY T
Abstract: FLEXIBLE DISK STORAGE APPARATUS A Bernoulli disk storage apparatus includes an elongated slot or groove having a substantial radial elongated portion for movably receiving a transducer. On either side of the groove are air bearing means which induce a pull down force on the record storage disk as it passes over the groove. By varying selected parameters, the medium-to-transducer spacing is held substantially constant throughout the radial extent of a desired recording area. Further, flutter usually associated with a Bernoulli disk at its outer radial portion is eliminated.
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公开(公告)号：CA1096039A
公开(公告)日：1981-02-17
申请号：CA265986
申请日：1976-11-19
Applicant: IBM
Inventor： GRIFFITHS DONALD E , NORTON DAVID G
Abstract: FLUIDIC TRANSDUCER ACCESS OPENING IN A STACK OF FLEXIBLE RECORD DISKS Selectively altering air flow generates an access opening for a record surface on one of a large plurality of flexible record storage disks coaxially supported on a common spindle for rotation. Air flow through the interstices between the disks usually is sufficient to stabilize rotation of the disks. To generate a transducer access opening the air flow on one axial side of a record disk to be accessed, which includes a record surface, is altered in a manner that disks axially adjacent and facing the record surface tend to axially move together at their periphery, resulting in a peripheral transducer access opening adjacent a stabilized record disk. In a preferred form of the invention, the axial extent of the altered air flow is limited to a predetermined portion of the stack of disks for minimizing the volume of air flow change. For dual sided recording, the air flow is altered at either side of the record disk to be accessed.
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公开(公告)号：FR2332591A1
公开(公告)日：1977-06-17
申请号：FR7629976
申请日：1976-09-30
Applicant: IBM
Inventor： GRIFFITHS DONALD E , NORTON DAVID G
Abstract: Selectively altering air flow generates an access opening for a record surface on one of a large plurality of flexible record storage disks coaxially supported on a common spindle for rotation. Air flow through the interstices between the disks usually is sufficient to stabilize rotation of the disks. To generate a transducer access opening the air flow on one axial side of a record disk to be accessed, which includes a record surface, is altered in a manner that disks axially adjacent and facing the record surface tend to axially move together at their periphery, resulting in a peripheral transducer access opening adjacent a stabilized record disk. In a preferred form of the invention, the axial extent of the altered air flow is limited to a predetermined portion of the stack of disks for minimizing the volume of air flow change. For dual sided recording, the air flow is altered at either side of the record disk to be accessed.
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