Patent FR2437336A1 successfully refreshed from Google Patents.
US4458277A
Expired / Lapsed
US
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Spacers for end-wise pneumatic partitioned disk pack
Assignee: Unisys Corp
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Filing: 1981-08-12
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Granted: 1984-07-03
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Expires: 2001-08-12
Abstract
Abstract Improved disk drive equipment is illustrated, being characterized by improved end-wise pneumatic partitioning means for deflecting selected flexible magnetic recording disks and featuring improved "external" pneumatic partition means for directing partitioning air to be injected end-wise and axially up the pack as a jet stream through bores in the disks and spacers into a gap between any two disks--these bores terminating at respective gaps where the spacer means is radially cut-out to divert the axial air stream to its associated inter-disk gap.
Inventors
- 👤 Herbert U. Ragle
- 👤 Dean DeMoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/021; G11B17/22; G11B17/30
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
An improved recording arrangement comprising a flexible disk pack adapted to be pneumatically partitioned end-wise, this pack being characterized by stacked flexible disks with intermediate spacer means, with an array of partition-bores extending axially through the pack cross-section, each bore terminating at a different inter-disk gap for conducting separating air thereto; said spacer means each comprising an annulus including an array of apertures adapted to register with said bores, at least one of these apertures being cut-out radially so as to conduct a partition air stream radially to an associated inter-disk gap.
Claim 2
Dependent Claim
92 words
An improved recording arrangement comprising a flexible disk pack adapted to be pneumatically partitioned end-wise, this pack being characterized by stacked flexible disks with intermediate spacer means, with an array of partition-bores extending axially through the pack cross-section, each bore terminating at a different inter-disk gap for conducting separating air thereto; said spacer means each comprising an annulus including an array of apertures adapted to register with said bores, at least one of these apertures being cut-out radially so as to conduct a partition air stream radially to an associated inter-disk gap.
Claim 3
Dependent Claim
21 words
The invention in accordance with claim 1, wherein each spacer means comprises an identical washer identically partition-apertured to generate said bores.
Claim 4
Dependent Claim
51 words
The combination as recited in claim 1, the spacers and disks being stacked and apertured in registration such as to generate said array of partition-bores extending axially of the pack, and arranged circumferentially adjacent its hub, with each bore terminating at a different respective inter-disk gap, via an associated spacer-venting cut-out.
Claim 5
Dependent Claim
44 words
The combination as recited in claim 1, as combined with pneumatic partition means disposed external to said pack and including director means adapted to direct a pressurized air jet to at least one of said pack bores by way of effecting a "partition-select" operation.
Claim 6
Dependent Claim
90 words
An "end-wise partitioned" disk pack comprising: a plurality of flexible recording disks and intermediate spacer means, all apertured so as to generate an array of partition bores, each bore communicating with a respective inter-disk gap; said pack being adapted for co-operation with external pneumatic partition means adapted to partition the pack and expose a selected disk surface by selectively directing a jet of pressurized air through a selected one of said bores; each said spacer means being characterized by at least one radial cut-out extending radially from an associated aperture.
Claim 7
Dependent Claim
90 words
An "end-wise partitioned" disk pack comprising: a plurality of flexible recording disks and intermediate spacer means, all apertured so as to generate an array of partition bores, each bore communicating with a respective inter-disk gap; said pack being adapted for co-operation with external pneumatic partition means adapted to partition the pack and expose a selected disk surface by selectively directing a jet of pressurized air through a selected one of said bores; each said spacer means being characterized by at least one radial cut-out extending radially from an associated aperture.
Claim 8
Dependent Claim
112 words
An improved method of partitioning a flexible disk pack which includes disks and intermediate spacers characterized by an array of partition bores extending axially, end-wise of the pack, this method comprising the steps of: forming each said spacer to include at least one radial venting cut-out extending between a bore aperture and the edge thereof; stacking said spacers between respective disks so that the cut-outs of each spacer is connected with the partition bore intended for that respective inter-disk gap; and operating said pack and associated drive and pneumatic supply means so as to apply partition air to a bore corresponding to the inter-disk gap "selected" for transducing at any given time.
Claim 9
Dependent Claim
112 words
An improved method of partitioning a flexible disk pack which includes disks and intermediate spacers characterized by an array of partition bores extending axially, end-wise of the pack, this method comprising the steps of: forming each said spacer to include at least one radial venting cut-out extending between a bore aperture and the edge thereof; stacking said spacers between respective disks so that the cut-outs of each spacer is connected with the partition bore intended for that respective inter-disk gap; and operating said pack and associated drive and pneumatic supply means so as to apply partition air to a bore corresponding to the inter-disk gap "selected" for transducing at any given time.
Claim 10
Dependent Claim
64 words
In an improved disk pack adapted for pneumatic partitioning, this pack including an array of conduit means, each conduit means being adapted to direct a partitioning air stream axially and up through the pack to introduce a partitioning gap at the interface between selected disks; this pack including: spacer means axially adjacent each disk and including radial vent means pneumatically communicating with said interface.
Claim 11
Dependent Claim
64 words
In an improved disk pack adapted for pneumatic partitioning, this pack including an array of conduit means, each conduit means being adapted to direct a partitioning air stream axially and up through the pack to introduce a partitioning gap at the interface between selected disks; this pack including: spacer means axially adjacent each disk and including radial vent means pneumatically communicating with said interface.
Claim 12
Dependent Claim
83 words
An improved recording arrangement comprising a pack of record disks adapted for end-wise partitioning, this pack including conduit means for conduction of partitioning force, axially through the pack, to introduce a prescribed partition gap at the interface between selected adjacent disks; associated disk drive means and pneumatic partition means arranged and adapted to selectively present partitioning pneumatic forces into at least a portion of said conduit means so as to introduce said gap at any selected interface; said pack including radially-vented spacer means.
Claim 13
Dependent Claim
83 words
An improved recording arrangement comprising a pack of record disks adapted for end-wise partitioning, this pack including conduit means for conduction of partitioning force, axially through the pack, to introduce a prescribed partition gap at the interface between selected adjacent disks; associated disk drive means and pneumatic partition means arranged and adapted to selectively present partitioning pneumatic forces into at least a portion of said conduit means so as to introduce said gap at any selected interface; said pack including radially-vented spacer means.
Claim 14
Dependent Claim
94 words
Improved spacer means for insertion between the flexible disks in a floppy disk pack adapted to be pneumatically partitioned end-wise, this pack being characterized by an array of partition-bores extending axially through the disks and the pack cross-section and adapted for conducting separating air to selected inter-disk gaps; said spacer means each comprising an annulus including an array of apertures adapted to register with said bores, with at least one of these apertures being cut-out radially so as to conduct a separation air stream radially to the inter-disk gap associated with the given annulus.
Claim 15
Dependent Claim
94 words
Improved spacer means for insertion between the flexible disks in a floppy disk pack adapted to be pneumatically partitioned end-wise, this pack being characterized by an array of partition-bores extending axially through the disks and the pack cross-section and adapted for conducting separating air to selected inter-disk gaps; said spacer means each comprising an annulus including an array of apertures adapted to register with said bores, with at least one of these apertures being cut-out radially so as to conduct a separation air stream radially to the inter-disk gap associated with the given annulus.
Claim 16
Dependent Claim
25 words
The invention in accordance with claim 9, wherein the spacer means comprise identical washers identically partition-apertured and stacked so the registered apertures generate said bores.
Claim 17
Dependent Claim
33 words
The combination as recited in claim 10, wherein each washer is so cut-out and so stacked as to conduct separation/portion air to its associated gap when the communicating bores are pressurized for this.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |