All-wheel drive for a vehicle

US4671377A · kind A · utility

Assignee

• Zahnradfabrik Friedrichshafen AG · DE

Inventors

• Friedrich Ehrlinger
• Hubert Sailer · Markdorf, DE

Key dates

• Filing date: Jan 8, 1986
• Grant date: Jun 9, 1987
• Expiry date: Jan 8, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60K17/3505
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In all-wheel drives having a clutch (12) automatically form-locking upon speed or torque uniformity, the driver can keep them engaged or disengaged as desired, for instance, during the actuation of the service brake (13) or during special uses, or when moving in reverse, and thereby automatic disengagement is prevented and the action of the motor brake over all wheels (10,11) can concomitantly be ensured. The adjusting device (14) used therefor can be directly designed as a shaft brake and directly assembled with the clutch (12) so that a twofold use is achieved and the brake (13) of the vehicle is protected (FIG. 1).