Servo steering system for motor vehicles

US4241804A · kind A · utility

Assignee

• Zahnradfabrik Friedrichshafen AG · DE

Inventors

• Horst Deininger · Alzenau, DE
• Werner Breitweg · Schwäbisch Gmünd, DE

Key dates

• Filing date: Oct 19, 1978
• Grant date: Dec 30, 1980
• Expiry date: Oct 19, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D5/0439
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A servomotor drives a steering gear through a pair of clutch drums to provide power assist in the proper rotational direction upon engagement of one of the clutch drums in response to manual torque applied to a steering shaft causing torsional displacement between its shaft sections interconnected by a torsion bar. The clutch drums are continuously driven in opposite directions by the servomotor through gearing and are respectively engaged by jaws mounted on a pair of clutch carriers respectively keyed to the shaft sections of the steering shaft.