CA1012641A - Turntable for rigidly mounting thin flexible magnetic discs - Google Patents

Turntable for rigidly mounting thin flexible magnetic discs

Info

Publication number: CA1012641A
Authority: CA; Canada
Prior art keywords: turntable; thin flexible; flexible magnetic; magnetic discs; rigidly mounting
Prior art date: 1971-06-18
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

CA143,831A

Other versions

CA143831S (en

Inventor

Ludwig R. Siegl

Richard H. Darling

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.)

1971-06-18

Filing date

1972-06-05

Publication date

1977-06-21

1972-06-05 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1977-06-21 Application granted granted Critical

1977-06-21 Publication of CA1012641A publication Critical patent/CA1012641A/en

Status Expired legal-status Critical Current

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
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers
- 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
- G11B17/0282—Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable
- 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
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
- G11B23/0028—Details
- G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving

CA143,831A 1971-06-18 1972-06-05 Turntable for rigidly mounting thin flexible magnetic discs Expired CA1012641A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US15433071A	1971-06-18	1971-06-18

Publications (1)

Publication Number	Publication Date
CA1012641A true CA1012641A (en)	1977-06-21

Family

ID=22550920

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA143,831A Expired CA1012641A (en)	1971-06-18	1972-06-05	Turntable for rigidly mounting thin flexible magnetic discs

Country Status (7)

Country	Link
US (1)	US3729720A (en)
JP (1)	JPS5240571B1 (en)
CA (1)	CA1012641A (en)
DE (1)	DE2225093C3 (en)
FR (1)	FR2142352A5 (en)
GB (1)	GB1322478A (en)
IT (1)	IT950706B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2257946C3 (en) *	1972-11-25	1981-07-23	Basf Ag, 6700 Ludwigshafen	Container for a disk-shaped recording medium and a drive device for its use
US3964101A (en) *	1973-06-15	1976-06-15	Tetsuo Hino	Magnetic recording disc
US3846837A (en) *	1973-06-20	1974-11-05	Intelligent Memory Syst Inc	Stacked flexible disc unit with head plugs
US3810243A (en) *	1973-07-02	1974-05-07	Ibm	Selectively tensioned transducer assembly for operation in compliant relation to individual memory discs of a partitionable aggregate of rotating flexible discs
US3855624A (en) *	1973-08-15	1974-12-17	Philips Corp	Grooved air bearing head
US4358802A (en) *	1973-10-01	1982-11-09	Mca Disco-Vision, Inc.	Fluid cushion turntable for video disc player
US3990111A (en) *	1973-10-12	1976-11-02	International Business Machines Corporation	Data storage apparatus employing a flexible magnetic disk
US3972054A (en) *	1974-02-19	1976-07-27	Addressograph Multigraph Corporation	Indicia disc
US3968972A (en) *	1974-06-21	1976-07-13	Sycor, Inc.	Self centering hub for flexible recording discs and the like
US3951264A (en) *	1974-10-29	1976-04-20	Dynastor, Inc.	Flexible disc cartridge
NL182594C (en) *	1975-03-12	1988-04-05	Philips Nv	PLAYING DEVICE, IN PARTICULAR VIDEO PLAYER, FOR PLAYING A PLATE PROVIDED FROM TRANSPARENT MATERIAL, AND ADJUSTING PLATE FOR USE WITH THIS DEVICE.
US4052750A (en) *	1975-12-05	1977-10-04	Dysan Corporation	Flexible recording disk with improved spindle mounting means
US4069508A (en) *	1976-02-25	1978-01-17	Texas Instruments Incorporated	Flexible magnetic disc recording system
US4060839A (en) *	1976-01-07	1977-11-29	Texas Instruments Incorporated	Flexible information storage disc
US4222070A (en) *	1978-03-13	1980-09-09	Eastman Kodak Company	Recording video information on a flexible master disc
US4480282A (en) *	1982-02-22	1984-10-30	Verbatim Corporation	Stabilized locating ring for a flexible disk
US4631620A (en) *	1984-03-23	1986-12-23	Fuji Photo Film Co., Ltd.	Magnetic disk cartridge
NL8403582A (en) *	1984-11-26	1986-06-16	Philips Nv	DEVICE FOR CENTERING, DIRECTIONING AND CLAMPING AN OPTICAL PLATE.
GB8507944D0 (en) *	1985-03-27	1985-05-01	Automation Facilities Ltd	Microfloppy disc drive head cleaner
NL8503563A (en) *	1985-12-24	1987-07-16	Nagron Precision Tooling	DISC-SHAPED INFORMATION CARRIER WITH A CENTERED HOLE INSERT.
CA1320569C (en) *	1986-12-01	1993-07-20	Hendrikus W.C.M. Peeters	Optically readable disk with self centering hub
JPH02126463A (en) *	1988-11-04	1990-05-15	Toshiba Corp	Magnetic disk device
US20070263316A1 (en) *	2006-05-11	2007-11-15	Dickson/Unigage, Inc.	Method And Apparatus For Supporting And Orienting A Workpiece And A Workpiece For Use Therewith

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3390385A (en) *	1966-02-01	1968-06-25	Sperry Rand Corp	Magnetic drum recording apparatus with replaceable sleeve

1971
- 1971-06-18 US US00154330A patent/US3729720A/en not_active Expired - Lifetime
1972
- 1972-03-24 IT IT22318/72A patent/IT950706B/en active
- 1972-04-14 GB GB1725472A patent/GB1322478A/en not_active Expired
- 1972-04-19 JP JP47038800A patent/JPS5240571B1/ja active Pending
- 1972-05-24 DE DE2225093A patent/DE2225093C3/en not_active Expired
- 1972-05-24 FR FR7219230A patent/FR2142352A5/fr not_active Expired
- 1972-06-05 CA CA143,831A patent/CA1012641A/en not_active Expired

Also Published As

Publication number	Publication date
DE2225093B2 (en)	1980-01-31
US3729720A (en)	1973-04-24
FR2142352A5 (en)	1973-01-26
JPS5240571B1 (en)	1977-10-13
DE2225093A1 (en)	1972-12-21
GB1322478A (en)	1973-07-04
IT950706B (en)	1973-06-20
DE2225093C3 (en)	1980-10-02

Publication	Publication Date	Title
CA1012641A (en)	1977-06-21	Turntable for rigidly mounting thin flexible magnetic discs
CA963739A (en)	1975-03-04	Magnetic recording tape
CA958482A (en)	1974-11-26	Magnetic recording disc
CA1012640A (en)	1977-06-21	Positioning apparatus and magnetic disc apparatus
CA1023853A (en)	1978-01-03	Magnetic disk storage apparatus
CA1029854A (en)	1978-04-18	Magnetic disc recorder
CA980184A (en)	1975-12-23	Magnetic recording element
CA954624A (en)	1974-09-10	Magnetic disc recorder
CA971834A (en)	1975-07-29	Magnetic recording member
AU4234772A (en)	1973-11-22	Magnetic recording medium
CA934058A (en)	1973-09-18	Flexible disk magnetic recording device
CA1017448A (en)	1977-09-13	Magnetic disc recording assembly
AU462249B2 (en)	1975-06-19	Magnetic record medium
CA963321A (en)	1975-02-25	Dual-layer magnetic recording tape
CA1010309A (en)	1977-05-17	Magnetic recording media
CA976485A (en)	1975-10-21	Apparatus for reproducing quadruphonic sound
CA980185A (en)	1975-12-23	Magnetic recording members
CA969433A (en)	1975-06-17	Magnetic recording media
CA981533A (en)	1976-01-13	Magnetic recording medium
CA1011455A (en)	1977-05-31	Pliable magnetic recording disc
CA967487A (en)	1975-05-13	Magnetic record apparatus
CA960771A (en)	1975-01-07	Magnetic disc record drive apparatus
CA1024253A (en)	1978-01-10	Magnetic disk storage apparatus
AU476963B2 (en)	1976-10-07	Gramophone turntable apparatus
CA912698A (en)	1972-10-17	Magnetic record disk cover