EP0406692A3 - Fluide pouvant répondre à l'influence d'un champ magnétique - Google Patents

Fluide pouvant répondre à l'influence d'un champ magnétique Download PDF

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Publication number
EP0406692A3
EP0406692A3 EP19900112257 EP90112257A EP0406692A3 EP 0406692 A3 EP0406692 A3 EP 0406692A3 EP 19900112257 EP19900112257 EP 19900112257 EP 90112257 A EP90112257 A EP 90112257A EP 0406692 A3 EP0406692 A3 EP 0406692A3
Authority
EP
European Patent Office
Prior art keywords
magnetic field
fluid responsive
dispersant
responsive
insulated
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
EP19900112257
Other languages
German (de)
English (en)
Other versions
EP0406692A2 (fr
EP0406692B1 (fr
Inventor
Emil Meyer Shtarkman
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Publication of EP0406692A2 publication Critical patent/EP0406692A2/fr
Publication of EP0406692A3 publication Critical patent/EP0406692A3/fr
Application granted granted Critical
Publication of EP0406692B1 publication Critical patent/EP0406692B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Lubricants (AREA)
EP90112257A 1989-06-27 1990-06-27 Fluide pouvant répondre à l'influence d'un champ magnétique Expired - Lifetime EP0406692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37229389A 1989-06-27 1989-06-27
US372293 1989-06-27

Publications (3)

Publication Number Publication Date
EP0406692A2 EP0406692A2 (fr) 1991-01-09
EP0406692A3 true EP0406692A3 (fr) 1991-01-16
EP0406692B1 EP0406692B1 (fr) 1994-04-20

Family

ID=23467539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112257A Expired - Lifetime EP0406692B1 (fr) 1989-06-27 1990-06-27 Fluide pouvant répondre à l'influence d'un champ magnétique

Country Status (3)

Country Link
EP (1) EP0406692B1 (fr)
JP (1) JPH0782925B2 (fr)
DE (1) DE69008254T2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131846A1 (de) * 1991-09-25 1993-04-01 Basf Ag Magnetorheologische fluessigkeit
US5354488A (en) * 1992-10-07 1994-10-11 Trw Inc. Fluid responsive to a magnetic field
CA2148001A1 (fr) * 1992-10-30 1994-05-11 Keith D. Weiss Matieres magnetorheologiques utilisant des particules modifiees en surface
US5578238A (en) * 1992-10-30 1996-11-26 Lord Corporation Magnetorheological materials utilizing surface-modified particles
JP3335630B2 (ja) * 1992-10-30 2002-10-21 ロード・コーポレーション チキソトロープ磁気レオロジー材料
WO1994010692A1 (fr) * 1992-10-30 1994-05-11 Lord Corporation Materiaux magnetorheologiques a faible viscosite
US20040132562A1 (en) * 2002-07-24 2004-07-08 Ralf Schwenger Ball game racket
JP3786138B2 (ja) 2002-08-19 2006-06-14 宇部興産株式会社 α−オレフィンの重合又は共重合に用いられるα−オレフィンの重合又は共重合用触媒、その触媒成分及びその触媒を用いたα−オレフィンの重合方法
US8282852B2 (en) 2009-09-16 2012-10-09 GM Global Technology Operations LLC Magnetorheological fluid and method of making the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714683A (en) * 1927-08-26 1929-05-28 Bell Telephone Labor Inc Electrical insulation
US2503947A (en) * 1947-03-10 1950-04-11 Comm Engineering Pty Ltd Method of molidng magnetic powder
US2597276A (en) * 1949-06-01 1952-05-20 Gen Aniline & Film Corp Insulation of ferromagnetic particles
US2661596A (en) * 1950-01-28 1953-12-08 Wefco Inc Field controlled hydraulic device
DE2329318A1 (de) * 1973-06-08 1975-01-02 Guenther Dipl Phys Dibus Magnetische teilchen und verfahren zu ihrer herstellung
US4604229A (en) * 1985-03-20 1986-08-05 Ferrofluidics Corporation Electrically conductive ferrofluid compositions and method of preparing and using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2565857B2 (ja) * 1986-12-26 1996-12-18 ティーディーケイ株式会社 磁性流体の製造方法
US5167850A (en) * 1989-06-27 1992-12-01 Trw Inc. Fluid responsive to magnetic field

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714683A (en) * 1927-08-26 1929-05-28 Bell Telephone Labor Inc Electrical insulation
US2503947A (en) * 1947-03-10 1950-04-11 Comm Engineering Pty Ltd Method of molidng magnetic powder
US2597276A (en) * 1949-06-01 1952-05-20 Gen Aniline & Film Corp Insulation of ferromagnetic particles
US2661596A (en) * 1950-01-28 1953-12-08 Wefco Inc Field controlled hydraulic device
DE2329318A1 (de) * 1973-06-08 1975-01-02 Guenther Dipl Phys Dibus Magnetische teilchen und verfahren zu ihrer herstellung
US4604229A (en) * 1985-03-20 1986-08-05 Ferrofluidics Corporation Electrically conductive ferrofluid compositions and method of preparing and using same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
QUEST, vol. 9, no. 1, summer 1986, pages 53-64, TRW Corp.; J.L. BLUMENTHAL et al.: "Exploring the TRW carbons" *

Also Published As

Publication number Publication date
EP0406692A2 (fr) 1991-01-09
EP0406692B1 (fr) 1994-04-20
DE69008254T2 (de) 1994-08-04
JPH0782925B2 (ja) 1995-09-06
DE69008254D1 (de) 1994-05-26
JPH0370103A (ja) 1991-03-26

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