Antitheft central lock system for a motor vehicle

US4440006A · kind A · utility

Assignee

• Kiekert GmbH & Co. Kommanditgesellschaft · DE

Inventor

• Frank Kleefeldt · Heiligenhaus, DE

Key dates

• Filing date: Aug 14, 1981
• Grant date: Apr 3, 1984
• Expiry date: Aug 14, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T70/7113
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A central door-lock system has a plurality of door latches each including a detent displaceable between an open position securing the respective door to the respective doorpost and a closed position permitting the respective door to separate from the respective doorpost, a manual door-opening handle, mechanism including a primary latch member connected to the handle and connectable to the detent and movable between a lock position preventing this handle from displacing the detent between its open and closed positions and an unlock position permitting the handle to displace the detent between the open and closed positions, and a secondary latch member displaceable between a lock position urging the primary latch member into the respective lock position while permitting the primary latch member to move into the respective unlock position, an unlock position permitting the primary latch member to move freely between the respective lock and unlock positions, and an antitheft position positively holding the primary member in the respective lock position. In addition, respective servoactuators for the latches each include an operator linearly displaceable between lock, unlock, and antith…