US4352135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floppy pack with improved spacer means
Assignee: Unisys Corp
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Filing: 1980-06-03
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Granted: 1982-09-28
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Expires: 2000-06-03
Abstract
Abstract Improved flexible disk pack magnetic storage systems and associated elements are illustrated as adapted for end-wise pneumatic partitioning and indicate, among other features, the use of "rim means" in the gap between adjacent flexible disks to better isolate the axial pressurized air streams from non-selected gaps and also to provide a reference surface for registration of the disks in the course of compressing the stack together.
Inventors
- 👤 Dean DeMoss
- 👤 Harvey J. Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:27
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/038; G11B17/021; G11B17/32
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
66 words
In an improved pack of flexible disks adapted to be pneumatically partitioned axially and wherein the disks are formed with gas-conducting apertures therethrough, the combination therewith of: rim means disposed in each gap between respective disks and adapted to isolate the gap from the gas stream passing axially-up certain of said holes and also to provide a reference platform against which the disks may be pressed.
Claim 2
Dependent Claim
66 words
In an improved pack of flexible disks adapted to be pneumatically partitioned axially and wherein the disks are formed with gas-conducting apertures therethrough, the combination therewith of: rim means disposed in each gap between respective disks and adapted to isolate the gap from the gas stream passing axially-up certain of said holes and also to provide a reference platform against which the disks may be pressed.
Claim 3
Dependent Claim
28 words
The combination as recited in claim 1 wherein at least one of said rim means is broken away to divert the associated gas-stream into the gap it bridges.
Claim 4
Dependent Claim
32 words
The combination as recited in claim 2 wherein at least some of the rim means comprise like flat-faced annular rings or "annulets" of identical height surrounding a respective one of said holes.
Claim 5
Dependent Claim
39 words
The combination as recited in claim 3 wherein the rim means also include one or more "semi-annulets" identical to the said annulets except that part of the ring configuration is broken-away so as to so divert the gas stream.
Claim 6
Dependent Claim
29 words
The combination as recited in claim 4 wherein said pack includes like spacer means between said disks and wherein said rim means are formed on each said spacer means.
Claim 7
Dependent Claim
30 words
The combination as recited in claim 4 wherein said spacer means comprises one or more metal plates etched to present the recited rim means configuration on one or both sides.
Claim 8
Dependent Claim
15 words
The combination as recited in claim 4 wherein the pack is "fixed" and not removable.
Claim 9
Dependent Claim
83 words
In an improved pack of flexible disks adapted to be pneumatically partitioned axially and wherein the disks are formed with gas-conducting apertures therethrough, the combination therewith of: segmented spacer means disposed in each gap between respective disks and adapted to establish this gap and also to provide a reference platform against which the disks may be pressed; at least some of the segmented spacer means comprising one or more like flat-faced arcuate segments of identical height disposed between respective ones of said holes.
Claim 10
Dependent Claim
83 words
In an improved pack of flexible disks adapted to be pneumatically partitioned axially and wherein the disks are formed with gas-conducting apertures therethrough, the combination therewith of: segmented spacer means disposed in each gap between respective disks and adapted to establish this gap and also to provide a reference platform against which the disks may be pressed; at least some of the segmented spacer means comprising one or more like flat-faced arcuate segments of identical height disposed between respective ones of said holes.
Claim 11
Dependent Claim
21 words
The combination as recited in claim 1 or claim 8 wherein said rim means is disposed directly on each flexible disk.
Claim 12
Dependent Claim
29 words
The combination as recited in claim 8 wherein the spacer segments in each gap include one or more "diverting segments" adapted and disposed to divert the axial gas stream.
Claim 13
Dependent Claim
25 words
The combination as recited in claim 8 wherein each said spacer means segment comprises one or more metal plates etched to present the recited configuration.
Claim 14
Dependent Claim
23 words
The combination as recited in claim 8 wherein the spacer means segments between said disks are formed on respective disks and bonded thereto.
Claim 15
Dependent Claim
80 words
The combination as recited in claim 8 or 12 wherein said pack is removable, including a central hub-opening and, being fastened between upper and lower collar means and wherein said spacer means also includes a "hub-rim" of the same height as the arcuate segments, this hub-rim surrounding said hub-opening; and wherein certain of said segments are broken away and disposed to divert their gas-stream inwardly toward the disk center to impact said hub-rim and be diffused-out and centrifugally spun-off therefrom.
Claim 16
Dependent Claim
53 words
The combination as recited in claim 13 wherein the pack includes fastener means connecting said collar means so as to press the disks and spacer means together, each disk also includes an array of fastener-holes adapted to pass said fastener means; and wherein the spacer means further inclues "fastener-annulets" each surrounding a fastener-hole.
Claim 17
Dependent Claim
39 words
The combination as recited in claim 12 wherein the pack includes fastener means connecting a pair of associated collars adapted to press the disks together, each disk also including an array of fastener-holes adapted to pass said fastener means.
Claim 18
Dependent Claim
76 words
An improved pack of flexible disks adapted to be pneumatically partitioned axially; the disks being formed with gas-conducting apertures therethrough, plus an array of arcuate spacer means disposed in each gap between at least some of these apertures and adapted to separate the disks and also to provide a reference surface against which the disks may be pressed; with each said spacer means array attached to a respective disk or to an associated supplemental spacer means.
Claim 19
Dependent Claim
76 words
An improved pack of flexible disks adapted to be pneumatically partitioned axially; the disks being formed with gas-conducting apertures therethrough, plus an array of arcuate spacer means disposed in each gap between at least some of these apertures and adapted to separate the disks and also to provide a reference surface against which the disks may be pressed; with each said spacer means array attached to a respective disk or to an associated supplemental spacer means.
Claim 20
Dependent Claim
31 words
The combination as recited in claim 16 wherein at least some of the spacer means comprise like flat-faced annular rings or semi-rings of identical height between respective ones of said holes.
Claim 21
Dependent Claim
30 words
The combination as recited in claim 17 wherein said pack includes like separator annuli, one between each said disk and wherein said spacer means are formed on said separator annuli.
Claim 22
Dependent Claim
28 words
The combination as recited in claim 16 wherein said spacer means are disposed directly on each flexible disk, being attached thereto as part of a disk fabrication operation.
Claim 23
Dependent Claim
80 words
The combination as recited in claim 19 wherein said pack is removable, including a central hub-opening and, being fastened between upper and lower collar means and wherein said spacer means includes inter-aperture segments plus a "hub-rim" of the same height as the spacer segments, this hub-rim surrounding said hub-opening; and wherein certain of said spacer segments are broken-away and disposed to divert their gas-stream inwardly toward the disk center to impact said hub-rim and be diffused-out and centrifugally spun-off therefrom.
Claim 24
Dependent Claim
53 words
The combination as recited in claim 20 wherein the pack includes fastener means connecting a pair of collars adapted to press the disks and spacer means together, each disk also includes an array of fastener-holes adapted to pass said fastener means; and wherein the spacer segments further include "fasten-rings" each surrounding a fastener-hole.
References Cited (Backward Citations)
US3969767A
Cited
US4167029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |