Global Patent Index - EP 0509574 B1

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EP 0509574 B1 19940518 - Electro-rheological fluids and methods of making and using the same.

Title (en)

Electro-rheological fluids and methods of making and using the same.

Title (de)

Elektrorheologische Flüssigkeiten und Verfahren zu deren Herstellung und deren Verwendung.

Title (fr)

Fluides électrorhéologiques et méthode pour la préparation et l'application de ceux-ci.

Publication

EP 0509574 B1 19940518 (EN)

Application

EP 92200905 A 19920330

Priority

US 68474891 A 19910415

Abstract (en)

[origin: EP0509574A1] Disclosed are electro-rheological fluids including vermiculite treated with a quaternary ammonium salt, methods of making the same, propylene carbonate adsorbed on the solid phase, butyl benzoate added for the liquid phase, and methods of using the frequency response of electro-rheological fluids to vary apparent viscosity and to compensate for temperature changes in the fluids. <IMAGE>

IPC 1-7

IPC 8 full level

C10M 169/04 (2006.01); C10M 171/00 (2006.01)

CPC (source: EP)

C10M 105/34 (2013.01); C10M 105/36 (2013.01); C10M 107/50 (2013.01); C10M 125/30 (2013.01); C10M 129/84 (2013.01); C10M 133/06 (2013.01); C10M 169/04 (2013.01); C10M 171/001 (2013.01); C10M 2201/103 (2013.01); C10M 2201/14 (2013.01); C10M 2207/2815 (2013.01); C10M 2207/282 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/284 (2013.01); C10M 2207/2845 (2013.01); C10M 2207/285 (2013.01); C10M 2207/2855 (2013.01); C10M 2207/32 (2013.01); C10M 2207/34 (2013.01); C10M 2215/04 (2013.01); C10M 2215/26 (2013.01); C10M 2229/025 (2013.01); C10M 2229/0405 (2013.01); C10M 2229/0415 (2013.01); C10M 2229/0425 (2013.01); C10M 2229/0435 (2013.01); C10M 2229/0445 (2013.01); C10M 2229/0455 (2013.01); C10M 2229/0465 (2013.01); C10M 2229/0475 (2013.01); C10M 2229/0485 (2013.01); C10M 2229/0505 (2013.01); C10M 2229/0515 (2013.01); C10M 2229/0525 (2013.01); C10M 2229/0535 (2013.01); C10M 2229/0545 (2013.01); C10N 2040/14 (2013.01); C10N 2040/16 (2013.01); C10N 2040/17 (2020.05); C10N 2040/175 (2020.05); C10N 2040/18 (2013.01); C10N 2040/185 (2020.05)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0509574 A1 19921021; EP 0509574 B1 19940518; DE 69200137 D1 19940623; DE 69200137 T2 19940901

DOCDB simple family (application)

EP 92200905 A 19920330; DE 69200137 T 19920330