FR2558919B1 - Dispositif d'etancheite a ferrofluide comportant une piece polaire unique et plusieurs etages - Google Patents

Dispositif d'etancheite a ferrofluide comportant une piece polaire unique et plusieurs etages

Info

Publication number
FR2558919B1
FR2558919B1 FR858501028A FR8501028A FR2558919B1 FR 2558919 B1 FR2558919 B1 FR 2558919B1 FR 858501028 A FR858501028 A FR 858501028A FR 8501028 A FR8501028 A FR 8501028A FR 2558919 B1 FR2558919 B1 FR 2558919B1
Authority
FR
France
Prior art keywords
sealing device
pole piece
multiple stages
single pole
ferrofluid sealing
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
Application number
FR858501028A
Other languages
English (en)
Other versions
FR2558919A1 (fr
Inventor
Kuldip Raj
Hanumaiah L Gowda
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.)
Ferrofluidics Corp
Original Assignee
Ferrofluidics 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
Application filed by Ferrofluidics Corp filed Critical Ferrofluidics Corp
Publication of FR2558919A1 publication Critical patent/FR2558919A1/fr
Application granted granted Critical
Publication of FR2558919B1 publication Critical patent/FR2558919B1/fr
Expired 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
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
FR858501028A 1984-01-27 1985-01-25 Dispositif d'etancheite a ferrofluide comportant une piece polaire unique et plusieurs etages Expired FR2558919B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/574,358 US4526380A (en) 1984-01-27 1984-01-27 Single pole piece multiple-stage ferrofluid seal apparatus

Publications (2)

Publication Number Publication Date
FR2558919A1 FR2558919A1 (fr) 1985-08-02
FR2558919B1 true FR2558919B1 (fr) 1989-07-13

Family

ID=24295770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858501028A Expired FR2558919B1 (fr) 1984-01-27 1985-01-25 Dispositif d'etancheite a ferrofluide comportant une piece polaire unique et plusieurs etages

Country Status (5)

Country Link
US (1) US4526380A (fr)
JP (1) JPS60175870A (fr)
DE (1) DE3501937A1 (fr)
FR (1) FR2558919B1 (fr)
GB (1) GB2153455B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565379A (en) * 1984-05-26 1986-01-21 Gmn Georg Muller Nurnberg Gmbh Magnetic fluid seal
US4842426A (en) * 1985-09-09 1989-06-27 Nippon Seiko Kabushiki Kaisha Bearing assembly
CH676740A5 (fr) * 1986-06-24 1991-02-28 Papst Motoren Gmbh & Co Kg
US4772032A (en) * 1987-03-02 1988-09-20 Ferrofluidics Corporation Compact magnetic fluid low pressure seal
US5238254A (en) * 1987-07-17 1993-08-24 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
DE3824104A1 (de) * 1987-07-17 1989-01-26 Koyo Seiko Co Ferrofluid-dichtung
DE3807893C2 (de) * 1988-03-10 1994-02-24 Freudenberg Carl Fa Dichtung für eine magnetisierbare Welle
NL8902086A (nl) * 1989-08-17 1991-03-18 Skf Ind Trading & Dev Afdicht- en glijlagersamenstel met een magnetische vloeistof.
US5007513A (en) * 1990-04-03 1991-04-16 Lord Corporation Electroactive fluid torque transmission apparatus with ferrofluid seal
JPH04101868U (ja) * 1991-02-12 1992-09-02 エヌオーケー株式会社 磁性流体シール装置
US5463511A (en) * 1992-09-17 1995-10-31 Hitachi, Ltd. Spindle unit having pre-load mechanism
DE9307447U1 (de) * 1993-05-17 1993-07-22 Friatec-Rheinhütte GmbH & Co., 6200 Wiesbaden Vertikale Magnetkupplungspumpe bzw. -rührer
JPH07217747A (ja) * 1994-01-31 1995-08-15 Nok Corp 磁性流体シール装置
US5660397A (en) * 1994-09-23 1997-08-26 Holtkamp; William H. Devices employing a liquid-free medium
JPH11166597A (ja) * 1997-12-02 1999-06-22 Harmonic Drive Syst Ind Co Ltd 回転導入機
JP4073064B2 (ja) * 1997-12-02 2008-04-09 株式会社リガク 耐磁場磁性流体シール装置
JP3648985B2 (ja) * 1998-06-30 2005-05-18 日本精工株式会社 ケージ型保持器付きボールねじ
US6899338B2 (en) * 2003-03-06 2005-05-31 Ferrotec Usa Corporation Ferrofluid seal incorporating multiple types of ferrofluid
CN101377985B (zh) * 2007-08-31 2012-08-22 湖南维格磁流体股份有限公司 中高压电力开关设备用动密封装置
CN101776149A (zh) * 2010-03-01 2010-07-14 北京交通大学 低温小直径磁性液体密封装置
CN101799075A (zh) * 2010-04-12 2010-08-11 北京交通大学 一种旋转轴组合密封装置
DE102012200774A1 (de) * 2012-01-20 2013-07-25 Aktiebolaget Skf Wälzlagereinheit
CN106461089B (zh) * 2014-05-13 2019-01-15 日本伊格尔博格曼有限公司 磁性流体密封的组装方法及磁性流体密封
CN107906204A (zh) * 2017-12-13 2018-04-13 广西科技大学 阶梯式极靴与唇形密封圈交替混合的往复密封装置
CN107906208B (zh) * 2017-12-13 2023-05-02 广西科技大学 一种凸圆弧型磁流体密封装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620584A (en) * 1970-05-25 1971-11-16 Ferrofluidics Corp Magnetic fluid seals
US3977739A (en) * 1974-09-06 1976-08-31 Ferrofluidics Corporation Magnetic ball bearing assembly using ferrolubricants
US4043616A (en) * 1976-05-27 1977-08-23 Aaron Zimmer Bearing cartridge assembly
SU655858A1 (ru) * 1977-11-01 1979-04-05 Ивановский энергетический институт им. В.И.Ленина Уплотнительно-опорный узел вала
US4407508A (en) * 1982-12-16 1983-10-04 Ferrofluidics Corporation Single-pole-piece ferrofluid seal apparatus and exclusion seal system
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system

Also Published As

Publication number Publication date
GB8501760D0 (en) 1985-02-27
GB2153455B (en) 1987-06-17
GB2153455A (en) 1985-08-21
JPS60175870A (ja) 1985-09-10
FR2558919A1 (fr) 1985-08-02
DE3501937A1 (de) 1985-08-08
US4526380A (en) 1985-07-02

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Legal Events

Date Code Title Description
ST Notification of lapse