Rotor with stabilizing magnets

US4880362A · kind A · utility

Inventors

• Karsten Laing · Althütte, DE
• Oliver Laing · Tübingen, DE
• Nikolaus Laing · Spaichingen, DE

Key dates

• Filing date: May 24, 1988
• Grant date: Nov 14, 1989
• Expiry date: May 24, 2008

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K7/09
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A rotor of an electric motor with a spherical magnetic gap or an impeller which forms a pivotably mounted rotating unit with an armature consists of a permanent magnetic annular member which is arranged juxtaposedly to a second stationary permanent magnetic annular member. The two magnets are spaced apart from each other by an air-gap and remain apart from each other because of their polarity. This prevents tumbling and counteracts the hydraulic thrust to prevent liftoff of the rotating unit from the step bearing.