US3839734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air turbulence utilized to clear disc
Assignee: International Business Machines Corp
•
Filing: 1973-08-27
•
Granted: 1974-10-01
•
Expires: 1993-08-27
Abstract
Abstract In a data storage apparatus having a housing and an information storage member in the form of a magnetizable disk within the housing, the disk being so rotatable within the housing as to entrain air to flow therewith, the improvement characterized in having an air deflector blade mounted within the housing, the deflector blade being operable so as to intercept the path of air entrained by the disk as to create a region of turbulence in the air downstream of the deflector blade and to deflect air incident against the deflector blade to pass between the deflector blade and the disk surface into the turbulent region.
Inventors
- 👤 I George
- 👤 N Luland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/32; G11B17/02; G11B17/022; G11B17/028; G11B17/03; G11B23/00; G11B23/50; G11B23/505
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
In a data storage apparatus having a housing and an information storage member in the form of a magnetizable disk within the housing, the disk being so rotatable within the housing as to entrain air to flow therewith, the improvement comprising at least one air deflector blade mounted within the housing, the deflector blade being operable so to intercept the path of air entrained by the disk as to create a region of turbulence in the air downstream of the deflector blade and to deflect air incident against the deflector blade to pass between the deflector blade and the disk surface into the turbulent region.
Claim 2
Dependent Claim
105 words
In a data storage apparatus having a housing and an information storage member in the form of a magnetizable disk within the housing, the disk being so rotatable within the housing as to entrain air to flow therewith, the improvement comprising at least one air deflector blade mounted within the housing, the deflector blade being operable so to intercept the path of air entrained by the disk as to create a region of turbulence in the air downstream of the deflector blade and to deflect air incident against the deflector blade to pass between the deflector blade and the disk surface into the turbulent region.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 wherein at least one deflector blade is mounted on each side of the disk.
Claim 4
Dependent Claim
38 words
Apparatus according to claim 1 wherein the deflector blade extends radially of the disk, and is shaped to subtend an angle with the surface of the disk which decreases with radial distance from the center of the disk.
Claim 5
Dependent Claim
59 words
Apparatus according to claim 1 wherein the disk is movable within the housing to engage clamping means for clamping the disk or releasing the disk from clamping for rotation within the housing, at least one deflector blade being movable between an inoperative position when the disk is clamped and an operative position when the disk is released for rotation.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 4 wherein the housing is adapted to receive a removable drive spindle for the disk.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 2 wherein the disk is fixed on a drive spindle and both deflector blades are fixed in position.
Claim 8
Dependent Claim
93 words
In a data storage system comprising at least one information storage member in the form of a disk, the disk being rotatable about a spindle as to entrain air to flow therewith, the improvement comprising at least one air deflector means being operable so as to intercept the path of air entrained by the disk as to create a region of turbulence in the air downstream of the deflector means and to deflect air incident against the deflector means to pass between the deflector means and the disk surface into the turbulent region.
Claim 9
Dependent Claim
93 words
In a data storage system comprising at least one information storage member in the form of a disk, the disk being rotatable about a spindle as to entrain air to flow therewith, the improvement comprising at least one air deflector means being operable so as to intercept the path of air entrained by the disk as to create a region of turbulence in the air downstream of the deflector means and to deflect air incident against the deflector means to pass between the deflector means and the disk surface into the turbulent region.
Claim 10
Dependent Claim
12 words
Apparatus of claim 7 wherein the deflector means is a deflector blade.
Claim 11
Dependent Claim
19 words
Apparatus according to claim 8 wherein at least one deflector blade is operable on each side of the disk.
Claim 12
Dependent Claim
38 words
Apparatus according to claim 8 wherein the deflector blade extends radially of the disk, and is shaped to subtend an angle with the surface of the disk which decreases with radial distance from the center of the disk.
Claim 13
Dependent Claim
12 words
Apparatus according to claim 7 wherein the disk is a magnetizable disk.
References Cited (Backward Citations)
US3005675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |