FR2247786B1 - - Google Patents

Info

Publication number: FR2247786B1
Authority: FR; France
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

FR7430004A

Other languages

Other versions

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.)

1973-10-12

Filing date

1974-08-30

Publication date

1978-10-27

1974-08-30 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1975-05-09 Publication of FR2247786A1 publication Critical patent/FR2247786A1/fr

1978-10-27 Application granted granted Critical

1978-10-27 Publication of FR2247786B1 publication Critical patent/FR2247786B1/fr

Status Expired legal-status Critical Current

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
- G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
- 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
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/032—Positioning by moving the door or the cover
- 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

FR7430004A 1973-10-12 1974-08-30 Expired FR2247786B1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US40613773A	1973-10-12	1973-10-12

Publications (2)

Publication Number	Publication Date
FR2247786A1 FR2247786A1 (en)	1975-05-09
FR2247786B1 true FR2247786B1 (en)	1978-10-27

Family

ID=23606684

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7430004A Expired FR2247786B1 (en)	1973-10-12	1974-08-30

Country Status (9)

Country	Link
JP (1)	JPS5321850B2 (en)
BE (1)	BE820982A (en)
CA (1)	CA1056499A (en)
DE (1)	DE2441881B2 (en)
FR (1)	FR2247786B1 (en)
GB (1)	GB1465288A (en)
IT (1)	IT1020144B (en)
NL (1)	NL7412744A (en)
SE (1)	SE401285B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4151573A (en) *	1977-06-13	1979-04-24	Tandon Magnetics Corp.	Magnetic recording device for double sided media
DE2812574C3 (en) *	1978-03-22	1981-01-29	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Floppy disk drive
JPS6245329Y2 (en) *	1980-10-07	1987-12-03
AT391377B (en) *	1980-12-31	1990-09-25	Sony Corp	DRIVE UNIT FOR A FLEXIBLE PLATE
JPS57162147A (en) *	1981-03-27	1982-10-05	Nec Corp	Magnetic recorder

1974
- 1974-08-23 IT IT26544/74A patent/IT1020144B/en active
- 1974-08-30 FR FR7430004A patent/FR2247786B1/fr not_active Expired
- 1974-08-31 DE DE19742441881 patent/DE2441881B2/en active Granted
- 1974-09-19 CA CA209,552A patent/CA1056499A/en not_active Expired
- 1974-09-26 NL NL7412744A patent/NL7412744A/en not_active Application Discontinuation
- 1974-09-27 JP JP11067674A patent/JPS5321850B2/ja not_active Expired
- 1974-10-08 GB GB4344274A patent/GB1465288A/en not_active Expired
- 1974-10-09 SE SE7412659A patent/SE401285B/en unknown
- 1974-10-11 BE BE149454A patent/BE820982A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB1465288A (en)	1977-02-23
IT1020144B (en)	1977-12-20
FR2247786A1 (en)	1975-05-09
SE7412659L (en)	1975-04-14
DE2441881B2 (en)	1976-04-29
JPS5321850B2 (en)	1978-07-05
DE2441881A1 (en)	1975-04-24
BE820982A (en)	1975-02-03
CA1056499A (en)	1979-06-12
JPS5067620A (en)	1975-06-06
NL7412744A (en)	1975-04-15
SE401285B (en)	1978-04-24

Publication	Publication Date	Title
AR201758A1 (en)	1975-04-15
AU476761B2 (en)	1976-09-30
AU465372B2 (en)	1975-09-25
AR201235Q (en)	1975-02-21
AU474593B2 (en)	1976-07-29
AU474511B2 (en)	1976-07-22
AU474838B2 (en)	1976-08-05
AU471343B2 (en)	1976-04-15
AU465453B2 (en)	1975-09-25
AU465434B2 (en)	1975-09-25
AU450229B2 (en)	1974-07-04
AR201229Q (en)	1975-02-21
AU472848B2 (en)	1976-06-03
AU466283B2 (en)	1975-10-23
AU476696B2 (en)	1976-09-30
AR199451A1 (en)	1974-08-30
AU477823B2 (en)	1975-06-19
AR201432A1 (en)	1975-03-14
AU476873B1 (en)	1975-01-09
AU461342B2 (en)	1975-05-22
AU477824B2 (en)	1975-07-17
AR210729A1 (en)	1977-09-15
AU447540B2 (en)	1974-03-25
AR195948A1 (en)	1973-11-15
AR193950A1 (en)	1973-05-31

Legal Events

Date	Code	Title	Description
1987-06-19	ST	Notification of lapse