Fluid responsive to a magnetic field

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EP 0 406 692 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.01.1991 Bulletin 1991/03

(43)	Date of publication A2:
	09.01.1991 Bulletin 1991/02

(21)	Application number: 90112257.2

(22)	Date of filing: 27.06.1990

(51)	International Patent Classification (IPC)⁵: H01F 1/28

(84)	Designated Contracting States:
	DE ES FR GB IT

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Priority:

27.06.1989 US 372293

(71)	Applicant: TRW INC.
	Lyndhurst Ohio 44124 (US)

(72)	Inventor:
	Shtarkman, Emil Meyer Southfield, Michigan 48034 (US)

(74)	Representative: Leiser, Gottfried, Dipl.-Ing. et al
	Prinz & Partner, Manzingerweg 7 D-81241 München D-81241 München (DE)

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References cited: :

(54)	Fluid responsive to a magnetic field

(57) A rheological fluid composition which is responsive to a magnetic field. The composition comprises magnetizable insulated, reduced carbonyl iron particles, a vehicle and a dispersant. The dispersant comprises fibrous carbon particles.

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