US4185311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partition of high performance floppy pack and associated means
Assignee: Unisys Corp
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Filing: 1978-08-04
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Granted: 1980-01-22
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Expires: 1998-08-04
Abstract
Abstract Improved flexible disk pack magnetic storage systems and associated sub-assemblies and media are illustrated as combined with improved partition means in the embodiments, these involving a pack of flexible magnetic according disks stacked for co-rotation at high rpm on a manipulator assembly which includes a pneumatic separator-hub as the partitioner, being adapted to be shifted axially along the disk array so as to direct an air jet between selected disks and thereby selectable split the stack for entry of a transducer assembly.
Inventors
- 👤 Ko Ko Gyi
- 👤 Herbert U. Ragle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/021
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
194 words
A method of providing for the controlled pneumatic separation of a stack of thin flexible sheet-like record disks, aligned along a prescribed stack radius, the method being adapted to provide for the selective pneumatic partitioning of this stack, this method comprising the steps of: stacking said flexible disks together with intermediate radially-apertured, rigid separator rings so as to form a disk pack with the inner periphery of the disks retained together to define a center-bore, and so as to permit the pack to be parted between any selected pair of adjacent disks, the pack being adapted to engage high speed rotation means; providing partition-jet body in this bore; this body comprising axially-translatable pneumatic partition-jet means arranged to project a jet of partitioning pressurized gas radially-out between selected records; providing for delivery of said pressurized air to jet means; providing related actuate means adapted to selectively translate said body along this bore, whereby to dispose said jet for a selected partition; and partitioning said stack by rotating said stack sufficient to induce a prescribed pumping between all disks so as to draw-in ambient air about said body, then out through all said rings and disks.
Claim 2
Independent Claim
194 words
A method of providing for the controlled pneumatic separation of a stack of thin flexible sheet-like record disks, aligned along a prescribed stack radius, the method being adapted to provide for the selective pneumatic partitioning of this stack, this method comprising the steps of: stacking said flexible disks together with intermediate radially-apertured, rigid separator rings so as to form a disk pack with the inner periphery of the disks retained together to define a center-bore, and so as to permit the pack to be parted between any selected pair of adjacent disks, the pack being adapted to engage high speed rotation means; providing partition-jet body in this bore; this body comprising axially-translatable pneumatic partition-jet means arranged to project a jet of partitioning pressurized gas radially-out between selected records; providing for delivery of said pressurized air to jet means; providing related actuate means adapted to selectively translate said body along this bore, whereby to dispose said jet for a selected partition; and partitioning said stack by rotating said stack sufficient to induce a prescribed pumping between all disks so as to draw-in ambient air about said body, then out through all said rings and disks.
Claim 3
Independent Claim
120 words
A method of arranging and manipulating an array of flexible recording disks stacked along a prescribed axis with intermediate radially-vented separator means between each disk, this method comprising: arranging gas-driven partition means in cooperative relation with the disk array so as to effect disk separation by directing one or more streams of air between selected disks and through the associated separator means; and adapting said array to include isolation separator means adapted to introduce an isolating air stream through each spacer means to be projected radially out between all adjacent disks and thus maintain the non-selecting separation thereof pneumatically; said disk stack being rotated so as to render the flexible disks self-flattening and "self-pumping" whereby to draw-in such isolating air.
Claim 4
Independent Claim
120 words
A method of arranging and manipulating an array of flexible recording disks stacked along a prescribed axis with intermediate radially-vented separator means between each disk, this method comprising: arranging gas-driven partition means in cooperative relation with the disk array so as to effect disk separation by directing one or more streams of air between selected disks and through the associated separator means; and adapting said array to include isolation separator means adapted to introduce an isolating air stream through each spacer means to be projected radially out between all adjacent disks and thus maintain the non-selecting separation thereof pneumatically; said disk stack being rotated so as to render the flexible disks self-flattening and "self-pumping" whereby to draw-in such isolating air.
Claim 5
Dependent Claim
58 words
The method as recited in claim 2, wherein said partition means is arranged to comprise a partitioning hub fitted into the bore defining the center of the disk pack so that, given the operating conditions and the structure and spacing of the disks, a hub-pack clearance is generated to which said isolation air may be so drawn automatically.
Claim 6
Dependent Claim
140 words
A partitionable record storage system arranged to introduce a quiescent isolating air-stream during a "non-partition-time," this air-stream to be projected radially-out through each spacer means and its flanking disks, relatively equally, during operating periods except when said pressurized stream is directed therethrough, whereby to help maintain normal disk separation; this system comprising in combination: a pneumatically partitionable disk stack arranged to be rotated at high speed about a prescribed axis; this stack comprising a pack of flexible co-rotating magnetic recording disks with a center-bore of prescribed length and diameter; gas driven partition means adapted to effect disk separation with one or more partitioning stream of pressurized air; and isolation means functionally separate from said partition means in being adapted and arranged to introduce an isolating air-stream, independent of said partitioning streams to be projected radially-out between all disks relatively equally.
Claim 7
Dependent Claim
140 words
A partitionable record storage system arranged to introduce a quiescent isolating air-stream during a "non-partition-time," this air-stream to be projected radially-out through each spacer means and its flanking disks, relatively equally, during operating periods except when said pressurized stream is directed therethrough, whereby to help maintain normal disk separation; this system comprising in combination: a pneumatically partitionable disk stack arranged to be rotated at high speed about a prescribed axis; this stack comprising a pack of flexible co-rotating magnetic recording disks with a center-bore of prescribed length and diameter; gas driven partition means adapted to effect disk separation with one or more partitioning stream of pressurized air; and isolation means functionally separate from said partition means in being adapted and arranged to introduce an isolating air-stream, independent of said partitioning streams to be projected radially-out between all disks relatively equally.
Claim 8
Dependent Claim
51 words
The combination as recited in claim 4, wherein said quiescent isolating air stream is introduced through each spacer means during non-partition times, this air-stream being projected radially out between all adjacent disks during operating periods except when said pressurized stream is directed therethrough to thus maintain the non-selecting separation thereof pneumatically.
Claim 9
Dependent Claim
58 words
The method as recited in claim 5, wherein said partition means is arranged to comprise a partitioning hub fitted into the bore defining the center of the disk pack so that, given the operating conditions and the structure and spacing of the disks, a hub-pack clearance is generated to which said isolation air may be so drawn-in automatically.
Claim 10
Dependent Claim
128 words
A partitionable record storage system comprising, in combination: a pneumatically partitionable disk stack arranged to be rotated at high speed about an axis defined by a common center-bore; gas-driven separator means disposed in said bore and adapted to effect disk separation and pack partition, selectably, with one or more centrifugal streams of pressurized air directed through partition port means; said separator means comprising tubular partition means disposed in said bore so as to project a partition jet selectively between an associated pair of disks, this separator means also being arranged and interfitted into the bore so as to form at least one intake aperture in the bore, separate from said port means whereby to introduce an isolating air stream to be projected radially-out between all disks relatively equally.
Claim 11
Dependent Claim
128 words
A partitionable record storage system comprising, in combination: a pneumatically partitionable disk stack arranged to be rotated at high speed about an axis defined by a common center-bore; gas-driven separator means disposed in said bore and adapted to effect disk separation and pack partition, selectably, with one or more centrifugal streams of pressurized air directed through partition port means; said separator means comprising tubular partition means disposed in said bore so as to project a partition jet selectively between an associated pair of disks, this separator means also being arranged and interfitted into the bore so as to form at least one intake aperture in the bore, separate from said port means whereby to introduce an isolating air stream to be projected radially-out between all disks relatively equally.
References Cited (Backward Citations)
US3768083A
Cited
US3936880A
Cited
US3947885A
Cited
US3994017A
Cited
US3969767A
Cited
US4011591A
Cited
US4019204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |