NL7413677A - Magnetisch schijvengeheugen met meerdere flexibele schijven. - Google Patents
Magnetisch schijvengeheugen met meerdere flexibele schijven.Info
- Publication number
- NL7413677A NL7413677A NL7413677A NL7413677A NL7413677A NL 7413677 A NL7413677 A NL 7413677A NL 7413677 A NL7413677 A NL 7413677A NL 7413677 A NL7413677 A NL 7413677A NL 7413677 A NL7413677 A NL 7413677A
- Authority
- NL
- Netherlands
- Prior art keywords
- magnetic disk
- disk memory
- multiple flexible
- flexible discs
- discs
- Prior art date
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
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- 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
-
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US414614A US3867723A (en) | 1973-11-07 | 1973-11-07 | Multiple flexible disk file |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7413677A true NL7413677A (nl) | 1975-05-12 |
Family
ID=23642195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7413677A NL7413677A (nl) | 1973-11-07 | 1974-10-18 | Magnetisch schijvengeheugen met meerdere flexibele schijven. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3867723A (nl) |
| JP (1) | JPS5543187B2 (nl) |
| BE (1) | BE820817A (nl) |
| CA (1) | CA1056056A (nl) |
| CH (1) | CH576686A5 (nl) |
| ES (1) | ES430728A1 (nl) |
| FR (1) | FR2250181B1 (nl) |
| GB (1) | GB1467697A (nl) |
| IT (1) | IT1022111B (nl) |
| NL (1) | NL7413677A (nl) |
| SE (1) | SE401051B (nl) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2460849C2 (de) * | 1974-12-21 | 1982-12-09 | Ibm Deutschland Gmbh, 7000 Stuttgart | Zugriffsarm mit einem Magnetkopf für einen aus einem Stapel von flexiblen Magnetplatten bestehenden Magnetplattenspeicher |
| US3975769A (en) * | 1975-02-07 | 1976-08-17 | International Business Machines Corporation | Storage device utilizing flexible magnetic disks |
| US4011591A (en) * | 1975-11-04 | 1977-03-08 | International Business Machines Corporation | Internal division actuation of ventilated floppy disk stack |
| US4011590A (en) * | 1975-11-04 | 1977-03-08 | International Business Machines Corporation | Internal division actuation of ventilated floppy disk stack |
| US4019204A (en) * | 1975-11-19 | 1977-04-19 | International Business Machines Corporation | Fluidic transducer access opening in a stack of flexible record disks |
| US4030136A (en) * | 1976-02-13 | 1977-06-14 | International Business Machines Corporation | Flexible disk pack accessing apparatus and method |
| US4458277A (en) * | 1976-08-04 | 1984-07-03 | Burroughs Corporation | Spacers for end-wise pneumatic partitioned disk pack |
| JPS5327414A (en) * | 1976-08-26 | 1978-03-14 | Victor Co Of Japan Ltd | Signal converter conv eying mechanism for recording and reproducing system of rotary recording medium type |
| US4228387A (en) * | 1977-09-14 | 1980-10-14 | Exxon Research & Engineering Co. | Variable reluctance stepper motor drive and method of operation as a DC brushless motor |
| US4538192A (en) * | 1982-06-14 | 1985-08-27 | Rodime Limited | Ventilation system for computer disc drive hub assembly |
| US4707752A (en) * | 1982-12-02 | 1987-11-17 | Unisys Corp. | Spacer means on floppy disks and associated techniques |
| US7534254B1 (en) * | 1988-06-13 | 2009-05-19 | Warsaw Orthopedic, Inc. | Threaded frusto-conical interbody spinal fusion implants |
| US20080055773A1 (en) * | 2006-08-29 | 2008-03-06 | Antek Peripherals, Inc. | Multi-Platter Flexible Media Disk Drive Arrangement |
| US10930307B2 (en) * | 2019-01-14 | 2021-02-23 | Western Digital Technologies, Inc. | Piezoelectric-based locking of actuator elevator mechanism for cold storage data storage device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303485A (en) * | 1963-03-18 | 1967-02-07 | Ampex | Magnetic disc with air bearing which spirals radially outward |
| NL6812450A (nl) * | 1968-08-31 | 1970-03-03 | ||
| US3703713A (en) * | 1971-09-24 | 1972-11-21 | Univ Iowa State Res Found | Variable diameter disc pack with cooperating head |
-
1973
- 1973-11-07 US US414614A patent/US3867723A/en not_active Expired - Lifetime
-
1974
- 1974-08-27 CH CH1163974A patent/CH576686A5/xx not_active IP Right Cessation
- 1974-09-19 IT IT27468/74A patent/IT1022111B/it active
- 1974-09-25 FR FR7433124A patent/FR2250181B1/fr not_active Expired
- 1974-10-05 ES ES430728A patent/ES430728A1/es not_active Expired
- 1974-10-08 BE BE149312A patent/BE820817A/xx not_active IP Right Cessation
- 1974-10-11 GB GB4412174A patent/GB1467697A/en not_active Expired
- 1974-10-16 CA CA211,526A patent/CA1056056A/en not_active Expired
- 1974-10-16 JP JP11831874A patent/JPS5543187B2/ja not_active Expired
- 1974-10-18 NL NL7413677A patent/NL7413677A/nl not_active Application Discontinuation
- 1974-10-23 SE SE7413310A patent/SE401051B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2250181A1 (nl) | 1975-05-30 |
| BE820817A (fr) | 1975-02-03 |
| FR2250181B1 (nl) | 1976-10-22 |
| CH576686A5 (nl) | 1976-06-15 |
| US3867723A (en) | 1975-02-18 |
| ES430728A1 (es) | 1976-10-01 |
| IT1022111B (it) | 1978-03-20 |
| JPS5080813A (nl) | 1975-07-01 |
| SE401051B (sv) | 1978-04-17 |
| GB1467697A (en) | 1977-03-16 |
| SE7413310L (nl) | 1975-05-09 |
| CA1056056A (en) | 1979-06-05 |
| DE2442536A1 (de) | 1975-05-22 |
| DE2442536B2 (de) | 1976-05-26 |
| JPS5543187B2 (nl) | 1980-11-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB | A search report has been drawn up | ||
| BV | The patent application has lapsed |