GB1467697A – Data storage apparatus
– Google Patents
GB1467697A – Data storage apparatus
– Google Patents
Data storage apparatus
Info
Publication number
GB1467697A
GB1467697A
GB4412174A
GB4412174A
GB1467697A
GB 1467697 A
GB1467697 A
GB 1467697A
GB 4412174 A
GB4412174 A
GB 4412174A
GB 4412174 A
GB4412174 A
GB 4412174A
GB 1467697 A
GB1467697 A
GB 1467697A
Authority
GB
United Kingdom
Prior art keywords
disc
discs
spindle
carriage
air
Prior art date
1973-11-07
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
Application number
GB4412174A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
1973-11-07
Filing date
1974-10-11
Publication date
1977-03-16
1974-10-11
Application filed by International Business Machines Corp
filed
Critical
International Business Machines Corp
1977-03-16
Publication of GB1467697A
publication
Critical
patent/GB1467697A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1467697 Flexible disc data storage apparatus INTERNATIONAL BUSINESS MACHINES CORP 11 Oct 1974 [7 Nov 1973] 44121/74 Heading G5R Data storage apparatus has flexible record discs 10, Fig. 2, mounted on a hollow spindle 12 for rotation therewith, the interior of the spindle being connected to a pressurized air source, and the spindle having apertures 25 distributed along its length and arranged so as to pass air from said source outwardly between the discs. Magnetic flexible discs 10 are mounted with, and between, stabilizing backing plates 38a, 38b on a sleeve 27 located on spindle 12 and having slots 26 for passage of air out of spindle 12 via apertures 25 therein. Spacers 18 between adjacent discs have passages therein for radial air flow. To access data on a selected disc, a stepping motor (34), Fig. 1 (not shown), is operated to move a carriage (32) axially of the disc stack and then a linear actuator (29) is operated to insert a wedge-like disc separator 28, Fig. 4, on carriage (32) between the selected and an adjacent disc, whereby a head 30 on the carriage is brought into transducing relation with the selected disc. The separator 28 has a flat side that maintains the disc to be accessed in a planar state, and air bearings are formed to minimize contact between the discs and the separator 28 by providing an air flow through the latter.
GB4412174A
1973-11-07
1974-10-11
Data storage apparatus
Expired
GB1467697A
(en)
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
GB1467697A
true
GB1467697A
(en)
1977-03-16
Family
ID=23642195
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4412174A
Expired
GB1467697A
(en)
1973-11-07
1974-10-11
Data storage apparatus
Country Status (11)
Country
Link
US
(1)
US3867723A
(en)
JP
(1)
JPS5543187B2
(en)
BE
(1)
BE820817A
(en)
CA
(1)
CA1056056A
(en)
CH
(1)
CH576686A5
(en)
ES
(1)
ES430728A1
(en)
FR
(1)
FR2250181B1
(en)
GB
(1)
GB1467697A
(en)
IT
(1)
IT1022111B
(en)
NL
(1)
NL7413677A
(en)
SE
(1)
SE401051B
(en)
Families Citing this family (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2460849C2
(en)
*
1974-12-21
1982-12-09
Ibm Deutschland Gmbh, 7000 Stuttgart
Access arm with a magnetic head for a magnetic disk storage device consisting of a stack of flexible magnetic disks
US3975769A
(en)
*
1975-02-07
1976-08-17
International Business Machines Corporation
Storage device utilizing flexible magnetic disks
US4011590A
(en)
*
1975-11-04
1977-03-08
International Business Machines Corporation
Internal division actuation of ventilated floppy disk stack
US4011591A
(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)
* Cited by examiner, † Cited by third party
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
(en)
*
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/en
active
1974-09-25
FR
FR7433124A
patent/FR2250181B1/fr
not_active
Expired
1974-10-05
ES
ES430728A
patent/ES430728A1/en
not_active
Expired
1974-10-08
BE
BE149312A
patent/BE820817A/en
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/en
not_active
Application Discontinuation
1974-10-23
SE
SE7413310A
patent/SE401051B/en
unknown
Also Published As
Publication number
Publication date
NL7413677A
(en)
1975-05-12
JPS5080813A
(en)
1975-07-01
SE7413310L
(en)
1975-05-09
DE2442536A1
(en)
1975-05-22
IT1022111B
(en)
1978-03-20
ES430728A1
(en)
1976-10-01
JPS5543187B2
(en)
1980-11-05
FR2250181A1
(en)
1975-05-30
FR2250181B1
(en)
1976-10-22
DE2442536B2
(en)
1976-05-26
BE820817A
(en)
1975-02-03
US3867723A
(en)
1975-02-18
CA1056056A
(en)
1979-06-05
SE401051B
(en)
1978-04-17
CH576686A5
(en)
1976-06-15
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Legal Events
Date
Code
Title
Description
1977-07-27
PS
Patent sealed [section 19, patents act 1949]
1987-06-03
PCNP
Patent ceased through non-payment of renewal fee
