GB1507241A - Rotary flexible record disc data storage apparatus - Google Patents
Rotary flexible record disc data storage apparatusInfo
- Publication number
- GB1507241A GB1507241A GB40110/76A GB4011076A GB1507241A GB 1507241 A GB1507241 A GB 1507241A GB 40110/76 A GB40110/76 A GB 40110/76A GB 4011076 A GB4011076 A GB 4011076A GB 1507241 A GB1507241 A GB 1507241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- increased
- pressure
- gap
- data storage
- storage apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/021—Selecting or spacing of record carriers for introducing the heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
Landscapes
- Automatic Disk Changers (AREA)
- Moving Of Heads (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
1507241 Flexible-disc recording and playback INTERNATIONAL BUSINESS MACHINES CORP 28 Sept 1976 [4 Nov 1975 (2)] 40110/76 Heading G5R A selected peripheral gap between two adjacent flexible record discs 7 in a rotating stack 1 is widened (as at 18a, Fig. 5, to admit a transducer 8) by increased air pressure applied centrally by way of a peripherally-apertured hub 3-1 slidable within the permeable hollow core 6 of the stack. As shown, the increased pressure is applied via tubes 3-7 and 203-2, and further tubes 203-12 and 203-3 permit the pressure on either side of the selected gap to be reduced or increased to assist in opening or reclosing the gap. The pressure generally within the core 6 also may be increased but is normally maintained via tubes 2-10 and 14b at such a level as to induce bi-stable flight of the discs.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/628,622 US4011591A (en) | 1975-11-04 | 1975-11-04 | Internal division actuation of ventilated floppy disk stack |
US05/628,623 US4011590A (en) | 1975-11-04 | 1975-11-04 | Internal division actuation of ventilated floppy disk stack |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1507241A true GB1507241A (en) | 1978-04-12 |
Family
ID=27090759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40110/76A Expired GB1507241A (en) | 1975-11-04 | 1976-09-28 | Rotary flexible record disc data storage apparatus |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5257808A (en) |
AR (1) | AR216292A1 (en) |
CH (1) | CH596636A5 (en) |
DE (1) | DE2650613C3 (en) |
FR (1) | FR2331119A1 (en) |
GB (1) | GB1507241A (en) |
IT (1) | IT1072418B (en) |
NL (1) | NL7612279A (en) |
SE (1) | SE407300B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5650585Y2 (en) * | 1977-07-20 | 1981-11-26 | ||
US4143408A (en) * | 1977-11-28 | 1979-03-06 | International Business Machines Corp. | External selector and internal controller for flexible disc stack |
GB2017378B (en) * | 1978-03-27 | 1982-06-23 | Burroughs Corp | Partitioning of flexible disc pack by end-applied air jet |
JPH0356546U (en) * | 1989-10-09 | 1991-05-30 |
-
1976
- 1976-09-24 IT IT27572/76A patent/IT1072418B/en active
- 1976-09-28 GB GB40110/76A patent/GB1507241A/en not_active Expired
- 1976-09-30 FR FR7629975A patent/FR2331119A1/en active Granted
- 1976-10-29 JP JP51129617A patent/JPS5257808A/en active Granted
- 1976-11-01 CH CH1373776A patent/CH596636A5/xx not_active IP Right Cessation
- 1976-11-02 AR AR265320A patent/AR216292A1/en active
- 1976-11-02 SE SE7612156A patent/SE407300B/en unknown
- 1976-11-04 NL NL7612279A patent/NL7612279A/en not_active Application Discontinuation
- 1976-11-04 DE DE2650613A patent/DE2650613C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE407300B (en) | 1979-03-19 |
NL7612279A (en) | 1977-05-06 |
CH596636A5 (en) | 1978-03-15 |
DE2650613C3 (en) | 1978-10-26 |
FR2331119A1 (en) | 1977-06-03 |
DE2650613B2 (en) | 1978-02-23 |
SE7612156L (en) | 1977-05-05 |
JPS5538743B2 (en) | 1980-10-06 |
JPS5257808A (en) | 1977-05-12 |
AR216292A1 (en) | 1979-12-14 |
DE2650613A1 (en) | 1977-05-05 |
FR2331119B1 (en) | 1978-12-22 |
IT1072418B (en) | 1985-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |