Pneumatic actuating arrangement, especially for central locking systems, and shifting valves therefor

US4273027A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Theodor Reinhard · Bad Tölz, DE
• Ernst Haug · Sindelfingen, DE
• Rudiger Hoffmann · Sindelfingen, DE
• Dieter Feichtiger · Aidlingen, DE

Key dates

• Filing date: Jun 1, 1978
• Grant date: Jun 16, 1981
• Expiry date: Jun 1, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8671
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A pneumatic actuating arrangement for to and fro movements, especially of a central locking system for motor vehicles, with an excess pressure source and with a vacuum source and with at least one pneumatic working device whose working chamber is adapted to be selectively connected to the excess pressure source or to the vacuum source by way of a shifting valve shiftable between two end positions. An intermediate for the shifting valve is provided in which position the shifting valve becomes temporarily effective during the transition from the one end position into the other end position so that the working chamber is conected to the atmosphere.