NL7412744A - DISK MEMORY DEVICE TO USE AND FLEXIBLE DISK. - Google Patents

DISK MEMORY DEVICE TO USE AND FLEXIBLE DISK.

Info

Publication number: NL7412744A
Authority: NL; Netherlands
Prior art keywords: disk; memory device; flexible; flexible disk; disk memory
Prior art date: 1973-10-12

Application number

NL7412744A

Other languages

Dutch (nl)

Original Assignee

Ibm

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

1974-09-26

Publication date

1975-04-15

1974-09-26 Application filed by Ibm filed Critical Ibm

1975-04-15 Publication of NL7412744A publication Critical patent/NL7412744A/en

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

NL7412744A 1973-10-12 1974-09-26 DISK MEMORY DEVICE TO USE AND FLEXIBLE DISK. NL7412744A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
NL7412744A true NL7412744A (en)	1975-04-15

Family

ID=23606684

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7412744A NL7412744A (en)	1973-10-12	1974-09-26	DISK MEMORY DEVICE TO USE AND FLEXIBLE DISK.

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
JPS5067620A (en)	1975-06-06
FR2247786B1 (en)	1978-10-27
SE401285B (en)	1978-04-24
DE2441881B2 (en)	1976-04-29
SE7412659L (en)	1975-04-14
IT1020144B (en)	1977-12-20
FR2247786A1 (en)	1975-05-09
CA1056499A (en)	1979-06-12
JPS5321850B2 (en)	1978-07-05
BE820982A (en)	1975-02-03
DE2441881A1 (en)	1975-04-24
GB1465288A (en)	1977-02-23

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Legal Events

Date	Code	Title
1979-12-27	BB	A search report has been drawn up
1981-11-02	BC	A request for examination has been filed
1985-01-01	A85	Still pending on 85-01-01
1987-05-04	BV	The patent application has lapsed