Pneumatic system for a central locking system for motor vehicles actuated by a flowing medium

US4181191A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Rudiger Hoffmann · Sindelfingen, DE
• Dieter Feichtiger · Aidlingen, DE
• Theodor Reinhard · Bad Tölz, DE
• Ernst Haug · Sindelfingen, DE
• Bernhard Schulze · Ehningen, DE
• Emil Bleibtreu · Sindelfingen, DE

Key dates

• Filing date: Apr 4, 1978
• Grant date: Jan 1, 1980
• Expiry date: Apr 4, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T70/65
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A pneumatic system for a central locking installation of motor vehicles with lines that conduct pressures to pneumatic elements, of which one each is coordinated to the parts to be locked, such as doors, tank lid, rear lid and/or front hood and the like, whereby key actuation of the locking mechanism at a vehicle door opens, respectively, closes the associated part(s); the pneumatic elements are constructed as single-chamber elements, to which excess pressure and vacuum are alternately fed through the same line; the excess pressure and vacuum are produced by a pump driven by an electric motor that is set into operation by a pulse transmitter engaged during the actuation of the locking mechanism of the driver door, and that is again automatically turned off after the termination of the opening or locking operation.