Electromagnetic clutch or brake

US4090161A · kind A · utility

Assignee

• Wolfgang E. Schultz · DE

Inventors

• Egon Fuhrer · Memmingen, DE
• Dieter Kleinert · Memmingen, DE
• Reinhard Haring · Lauben, DE

Key dates

• Filing date: Aug 24, 1976
• Grant date: May 16, 1978
• Expiry date: Aug 24, 1996

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2121/20
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In electromagnetic clutches or brakes in which the armature closes against the pole pieces of the coil without leaving an air gap, the faces of the poles or armature, or both, are broken up into smaller areas by annular grooves to reduce the lodgement and retention of contaminating and magnetically inhibiting particles resulting from wear.