Magnetorheological Fluid

US5505880A · kind A · utility

Assignee

• BASF SE

Inventors

• Claudius Kormann · Schifferstadt, DE
• Ekkehard Schwab · Neustadt, DE
• Martin Laun · Mannheim, DE

Key dates

• Filing date: Nov 16, 1994
• Grant date: Apr 9, 1996
• Expiry date: Nov 16, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F1/447
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A magnetorheological fluid essentially consists of magnetic particles which are coated with a polyelectrolyte and are suspended in a polar liquid. The fluid has a magnetorheological effect of more than 100 Pa, measured in a magnetic field of 100 kA/m.