DE68913127T2 - Dichtungsglied zur dichtung von magnetischen fluiden. - Google Patents

Dichtungsglied zur dichtung von magnetischen fluiden.

Info

Publication number
DE68913127T2
DE68913127T2 DE68913127T DE68913127T DE68913127T2 DE 68913127 T2 DE68913127 T2 DE 68913127T2 DE 68913127 T DE68913127 T DE 68913127T DE 68913127 T DE68913127 T DE 68913127T DE 68913127 T2 DE68913127 T2 DE 68913127T2
Authority
DE
Germany
Prior art keywords
gasket
magnetic fluids
sealing magnetic
sealing
fluids
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.)
Expired - Lifetime
Application number
DE68913127T
Other languages
English (en)
Other versions
DE68913127D1 (de
Inventor
Ryuhei Nippon Ferrofl Ishikawa
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.)
NIPPON FERROFLUIDICS KK
Original Assignee
NIPPON FERROFLUIDICS KK
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 by NIPPON FERROFLUIDICS KK filed Critical NIPPON FERROFLUIDICS KK
Publication of DE68913127D1 publication Critical patent/DE68913127D1/de
Application granted granted Critical
Publication of DE68913127T2 publication Critical patent/DE68913127T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/919—Seal including electrical feature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Material Composition (AREA)
DE68913127T 1988-03-31 1989-03-31 Dichtungsglied zur dichtung von magnetischen fluiden. Expired - Lifetime DE68913127T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63080607A JPH01255763A (ja) 1988-03-31 1988-03-31 磁性流体シール用のシール体
PCT/JP1989/000343 WO1989009356A1 (en) 1988-03-31 1989-03-31 Sealing member for sealing magnetic fluid

Publications (2)

Publication Number Publication Date
DE68913127D1 DE68913127D1 (de) 1994-03-24
DE68913127T2 true DE68913127T2 (de) 1994-08-11

Family

ID=13723018

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68913127T Expired - Lifetime DE68913127T2 (de) 1988-03-31 1989-03-31 Dichtungsglied zur dichtung von magnetischen fluiden.

Country Status (6)

Country Link
US (1) US5050891A (de)
EP (1) EP0364604B1 (de)
JP (1) JPH01255763A (de)
KR (1) KR0156874B1 (de)
DE (1) DE68913127T2 (de)
WO (1) WO1989009356A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051992B3 (de) * 2006-11-03 2008-01-31 Dtg - Development & Technology Gmbh Magnetflüssigkeitsdichtung zur Abdichtung einer Welle oder Achse gegenüber einer Nabe

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924434A1 (de) * 1989-07-24 1991-01-31 Freudenberg Carl Fa Ferrofluid-dichtung
US5267737A (en) * 1992-01-16 1993-12-07 International Business Machines, Corp. Magnetic fluid seal containment shield
US5402023A (en) * 1992-08-07 1995-03-28 Nippon Densan Corporation Spindle motor and magnetic fluid seal apparatus used therefor
US5367416A (en) * 1992-12-31 1994-11-22 International Business Machines Corporation Spindle grounding device using magnetic fluid
JP2541789B2 (ja) * 1994-01-07 1996-10-09 インターナショナル・ビジネス・マシーンズ・コーポレイション デ―タ記憶ディスク・ドライブ
US5660397A (en) * 1994-09-23 1997-08-26 Holtkamp; William H. Devices employing a liquid-free medium
US5954342A (en) * 1997-04-25 1999-09-21 Mfs Technology Ltd Magnetic fluid seal apparatus for a rotary shaft
US6229676B1 (en) 1998-11-13 2001-05-08 International Business Machines Corporation Ferrofluid seal for actuator bearing
US6976682B1 (en) * 1999-01-22 2005-12-20 Seagate Technology Llc Apparatus and method for forming a rotatable ferrofluidic seal between a shaft and a hub
US6378874B1 (en) 1999-03-16 2002-04-30 Seagate Technology Llc Apparatus and method for providing a ferrofluidic seal
US20020130565A1 (en) * 2000-09-22 2002-09-19 Tilton Charles L. Spray cooled motor system
US7291287B2 (en) * 2005-05-25 2007-11-06 Ferrolabs, Inc. Method of making magnetic fluid
US7129609B1 (en) 2005-08-30 2006-10-31 Ferrolabs, Inc. Magneto-fluidic seal with wide working temperature range
JP2009115122A (ja) * 2007-11-02 2009-05-28 Kazufumi Ogawa シール機構とそれを備えた装置
RU2536863C2 (ru) * 2013-04-05 2014-12-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) Способ повышения ресурса и надежности устройств с нанодисперсной магнитной жидкостью
CN112049937B (zh) * 2020-09-08 2021-05-18 清华大学 双涂层磁性液体密封装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1292338A (en) * 1968-10-28 1972-10-11 Karl-Heinz Steigwald Sealing means
SU889988A1 (ru) * 1977-06-10 1981-12-15 Опытное Конструкторско-Технологическое Бюро "Кристалл" С Опытным Производством Ленинградского Технологического Института Им.Ленсовета Магнитно-жидкостное уплотнение
SU694710A1 (ru) * 1978-05-22 1979-10-30 Ордена Трудового Красного Знамени Институт Тепло-И Массообмена Им. А.В.Лыкова Ан Белорусской Сср Уплотнительное устройство
US4357022A (en) * 1980-11-19 1982-11-02 Ferrofluidics Corporation Ferrofluid rotary-shaft seal apparatus and method
US4592557A (en) * 1985-02-07 1986-06-03 Iversen Arthur H Liquid cooled rotating seals
US4604229A (en) * 1985-03-20 1986-08-05 Ferrofluidics Corporation Electrically conductive ferrofluid compositions and method of preparing and using same
JPS63152773A (ja) * 1986-12-15 1988-06-25 Nippon Telegr & Teleph Corp <Ntt> 磁性流体シ−ル

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051992B3 (de) * 2006-11-03 2008-01-31 Dtg - Development & Technology Gmbh Magnetflüssigkeitsdichtung zur Abdichtung einer Welle oder Achse gegenüber einer Nabe

Also Published As

Publication number Publication date
EP0364604B1 (de) 1994-02-16
DE68913127D1 (de) 1994-03-24
EP0364604A4 (en) 1990-10-24
JPH01255763A (ja) 1989-10-12
KR900700805A (ko) 1990-08-17
US5050891A (en) 1991-09-24
EP0364604A1 (de) 1990-04-25
KR0156874B1 (ko) 1999-02-18
WO1989009356A1 (en) 1989-10-05

Similar Documents

Publication Publication Date Title
ATE76091T1 (de) Dichtungsmaterial.
DE3667188D1 (de) Dichtung.
DE3677172D1 (de) Dichtung.
DE68913127D1 (de) Dichtungsglied zur dichtung von magnetischen fluiden.
NO861095L (no) Tetningsinnretning.
DE68909846D1 (de) Abdichtung.
DE3670899D1 (de) Magnetfluessigkeitssperrdichtung und montageverfahren.
DE68921981D1 (de) Dichtung.
NO872293D0 (no) Tettende pakning.
DE58909045D1 (de) Flachdichtung.
DE3673093D1 (de) Zylinderdeckelabdichtung.
DE3761697D1 (de) Dichtung fuer ventile.
DE3686639T2 (de) Einkomponenten-abdichtung.
DE69105378T2 (de) Metalldichtung mit Einrichtungen zur Abdichtung von Fluidbohrungen.
DE3671952D1 (de) Dichtung.
DE3671732D1 (de) Dichtung.
DE3876343D1 (de) Magnetische dichtungseinrichtung.
DE68913881T2 (de) Dichtungsglied zur dichtung von magnetischen fluiden und dessen herstellung.
DE59001992D1 (de) Dichtungsplatten - kalander.
DE267849T1 (de) Pastoeses dichtungsmaterial zur fugendichtung von hitze ausgesetzter oberflaechen.
DE68905984T2 (de) Dichtung.
DE68904394T2 (de) Dichtung.
NO863828D0 (no) Tetningspakning.
ES1011147Y (es) Precinto identificador.
ATE50335T1 (de) Dichtung fuer ventile.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee