DE3790869T - - Google Patents

Info

Publication number
DE3790869T
DE3790869T DE19873790869 DE3790869A DE3790869T DE 3790869 T DE3790869 T DE 3790869T DE 19873790869 DE19873790869 DE 19873790869 DE 3790869 A DE3790869 A DE 3790869A DE 3790869 T DE3790869 T DE 3790869T
Authority
DE
Germany
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.)
Withdrawn
Application number
DE19873790869
Other languages
German (de)
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
Application filed filed Critical
Publication of DE3790869T publication Critical patent/DE3790869T/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1446—Reducing contamination, e.g. by dust, debris
    • G11B33/1473—Reducing contamination, e.g. by dust, debris of/from bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
DE19873790869 1986-12-24 1987-01-27 Withdrawn DE3790869T (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986197468U JPH0629566Y2 (ja) 1986-12-24 1986-12-24 多段型磁性流体シール装置

Publications (1)

Publication Number Publication Date
DE3790869T true DE3790869T (xx) 1988-11-17

Family

ID=16374992

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873790869 Withdrawn DE3790869T (xx) 1986-12-24 1987-01-27

Country Status (3)

Country Link
JP (1) JPH0629566Y2 (xx)
DE (1) DE3790869T (xx)
WO (1) WO1988005142A1 (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972218B (zh) * 2016-05-25 2018-06-08 广西科技大学 一种端面式磁性流体密封装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865373A (ja) * 1981-10-14 1983-04-19 Kiichi Taga 磁性粒子を混ぜた粘性流体による軸シ−ルパツキング方式
JPS58131474A (ja) * 1982-01-29 1983-08-05 Tohoku Metal Ind Ltd 密封装置
US4527805A (en) * 1984-05-03 1985-07-09 Ferrofluidics Corporation High-pressure ferrofluid seal apparatus

Also Published As

Publication number Publication date
JPH0629566Y2 (ja) 1994-08-10
JPS63103062U (xx) 1988-07-04
WO1988005142A1 (en) 1988-07-14

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Legal Events

Date Code Title Description
8180 Miscellaneous part 1

Free format text: TOUHOKU- KINZOKU-KOUGYO LTD., SENDAI, JP

8110 Request for examination paragraph 44
8130 Withdrawal