US4315288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk housing for disk mass storage unit including integral means for reducing temperature differentials among disks
Assignee: Digital Equipment Corp
•
Filing: 1980-02-29
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Granted: 1982-02-09
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Expires: 2000-02-29
Abstract
Abstract A housing assembly (1-10) for multiple disks (1-12) used in a disk mass information storage unit in a data processing system. The housing includes fixed baffles (2-84, 86) proximate the outer disk surfaces in the housing to substantially reduce temperature differentials among the disk surfaces.
Inventors
- 👤 Frank W. Bernett
- 👤 Peter R. Svendsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:22
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/021; G11B23/03; G11B23/032; G11B23/0323
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A housing assembly for a plurality of rotatable, spaced-apart, coaxial disks for use in a mass information storage subsystem of a data processing system, at least one of the disks constituting an outer disk and at least one of the disks constituting an inner disk, said housing assembly comprising a housing defining a chamber for receiving said disks, said housing including means integral therewith inside the chamber for reducing the temperature differential between the outer disk and the inner disk including a flange means supported by said housing and extending at least a portion of the way around the periphery of the outer disk to limit the air flow over the outer surface of said outer disk.
Claim 2
Dependent Claim
117 words
A housing assembly for a plurality of rotatable, spaced-apart, coaxial disks for use in a mass information storage subsystem of a data processing system, at least one of the disks constituting an outer disk and at least one of the disks constituting an inner disk, said housing assembly comprising a housing defining a chamber for receiving said disks, said housing including means integral therewith inside the chamber for reducing the temperature differential between the outer disk and the inner disk including a flange means supported by said housing and extending at least a portion of the way around the periphery of the outer disk to limit the air flow over the outer surface of said outer disk.
Claim 3
Dependent Claim
51 words
A housing assembly as defined in claim 1 wherein said temperature reducing means further comprises a generally planar member supported by said housing and having a kperiphery, said flange means depending from said periphery towards the level of said outer disk, said planar member and said flange means forming a baffle.
Claim 4
Dependent Claim
30 words
A housing assembly as defined in claim 1 in which said flange extends to the level of said outer disk at a diameter greater than the diameter of the disk.
Claim 5
Dependent Claim
35 words
A housing assembly as defined in claim 3 in which the disks are adapted to be accessed by a read/write head, and the flange has an opening to facilitate the head's accessing of the disk.
Claim 6
Dependent Claim
53 words
A housing assembly as defined in claim 1 in which the plurality of disks includes a second outer disk, and said housing assembly includes a second baffle fixed to said housing inside said chamber proximate said second outer disk to reduce the temperature differential between said second outer disk and said inner disk.
Claim 7
Dependent Claim
45 words
A housing assembly as defined in claim 5 in which said second baffle comprises a planar member having an edge, and a flange depending from said edge to the level of said second outer disk, at a diameter greater than the diameter of the disk.
Claim 8
Dependent Claim
37 words
A housing assembly as defined in claim 6 in which the disks are adapted to be accessed by a read/write head, and the second baffle flange has an opening to facilitate the head's accessing of the disk.
References Cited (Backward Citations)
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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) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |