Pneumatic control valve device for air-suspended vehicles, with mechanical return of the control element

US8413683B2 · kind B2 · utility

Assignee

• KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

• Michael Herges · Munich, DE
• Friedbert Roether · Cleebronn, DE
• Martin Mederer · Dresden, DE
• Janos Toth · Kecskemét, HU

Key dates

• Filing date: Feb 7, 2008
• Grant date: Apr 9, 2013
• Expiry date: Feb 7, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86638
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A pneumatic control valve device for systems for arbitrarily lifting and lowering the vehicle body of air-suspended vehicles, with a control device having at least one mechanical control element for the positions lift, lower, drive and stop, and with a spring device for returning the control element after it has been released, in which the spring device returns the control element after it has been released into the drive position, a position securing device is provided, the position securing device mechanically locking the control element, the position securing device, in the locked state, preventing the control element from returning under the spring force of the spring device into the drive position, but permitting this in the unlocked state, however always permitting the control element to be manually adjusted, the position securing device can be changed from the locked state into the unlocked state by an electric signal.