GB2017378A - Partitioning of flexible disc pack by end-applied air jet - Google Patents

Partitioning of flexible disc pack by end-applied air jet

Info

Publication number
GB2017378A
GB2017378A GB7906983A GB7906983A GB2017378A GB 2017378 A GB2017378 A GB 2017378A GB 7906983 A GB7906983 A GB 7906983A GB 7906983 A GB7906983 A GB 7906983A GB 2017378 A GB2017378 A GB 2017378A
Authority
GB
United Kingdom
Prior art keywords
pack
ida
grooves
partitioning
bores
Prior art date
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.)
Granted
Application number
GB7906983A
Other versions
GB2017378B (en
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.)
Unisys Corp
Original Assignee
Burroughs 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.)
Filing date
Publication date
Priority claimed from US05/890,799 external-priority patent/US4167029A/en
Application filed by Burroughs Corp filed Critical Burroughs Corp
Publication of GB2017378A publication Critical patent/GB2017378A/en
Application granted granted Critical
Publication of GB2017378B publication Critical patent/GB2017378B/en
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
    • G11B17/021—Selecting or spacing of record carriers for introducing the heads

Landscapes

  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Replacement Of Web Rolls (AREA)
  • Advancing Webs (AREA)
  • Winding Of Webs (AREA)
  • Automatic Disk Changers (AREA)
  • Multiple-Way Valves (AREA)

Abstract

A pack Pk of floppy discs is divided at a selected location to allow transducer access by means of a jet of air applied to a selected one of a number of bores that extend axially through the disc pack and terminate at respective inter- disc gaps. The drive hub Hb has ducts D in registry with the pack bores and terminating at respective annular grooves Ha. A non-rotating sleeve Id having a single annular groove Ida is axially movable to align Ida with a selected groove Ha and apply pressurised air S-A. Other grooves Ha are vented by means of axial slots G-1a, G-1 b. The sleeve Id may alternatively be fixed and have plural air supply grooves Ida connected to a selector valve arrangement. <IMAGE>
GB7906983A 1978-03-27 1979-02-28 Partitioning of flexible disc pack by end-applied air jet Expired GB2017378B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/890,799 US4167029A (en) 1976-08-04 1978-03-27 Jet distributor for end-wise pneumatic partitioning of disk pack

Publications (2)

Publication Number Publication Date
GB2017378A true GB2017378A (en) 1979-10-03
GB2017378B GB2017378B (en) 1982-06-23

Family

ID=25397153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906983A Expired GB2017378B (en) 1978-03-27 1979-02-28 Partitioning of flexible disc pack by end-applied air jet

Country Status (10)

Country Link
JP (1) JPS54131911A (en)
AU (1) AU512038B1 (en)
BE (1) BE874823A (en)
BR (1) BR7901575A (en)
DE (1) DE2910400A1 (en)
FR (1) FR2421437A1 (en)
GB (1) GB2017378B (en)
IT (1) IT1110401B (en)
NL (1) NL7901743A (en)
PL (1) PL214140A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936880A (en) * 1974-07-01 1976-02-03 International Business Machines Corporation Bistable deflection separation of flexible disks
US3994017A (en) * 1974-07-01 1976-11-23 International Business Machines Corporation Random access disk file with axial translation of disks and end plate
IT1072418B (en) * 1975-11-04 1985-04-10 Ibm IMPROVED DISK MEMORY
US4019204A (en) * 1975-11-19 1977-04-19 International Business Machines Corporation Fluidic transducer access opening in a stack of flexible record disks
US4086640A (en) * 1976-08-04 1978-04-25 Burroughs Corporation Partitionable portable flexible disk pack

Also Published As

Publication number Publication date
JPS54131911A (en) 1979-10-13
GB2017378B (en) 1982-06-23
IT1110401B (en) 1985-12-23
AU512038B1 (en) 1980-09-18
IT7920834A0 (en) 1979-03-08
PL214140A1 (en) 1980-01-02
BR7901575A (en) 1979-10-16
FR2421437A1 (en) 1979-10-26
NL7901743A (en) 1979-10-01
BE874823A (en) 1979-07-02
DE2910400A1 (en) 1979-10-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee