Central door-lock system for motor vehicles

US4364249A · kind A · utility

Assignee

• Kiekert GmbH & Co. Kommanditgesellschaft · DE

Inventor

• Frank Kleefeldt · Heiligenhaus, DE

Key dates

• Filing date: Mar 24, 1980
• Grant date: Dec 21, 1982
• Expiry date: Mar 24, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T292/1082
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A central door-lock system has a plurality of door latches each of which is provided with a detent displaceable between open and closed positions for allowing the door to open and for holding it closed. This detent can be acted on by a manual door-opening handle through mechanism including a primary latch member which is connected to the handle and connectable to the detent and which is movable between a lock position preventing the handle from displacing the detent between the open and closed positions and an unlock position permitting the handle to displace the detent between the open and closed positions. A secondary latch member is displaceable between a lock position urging the primary latch member into the respective lock 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. Each latch is operated by a servoactuator having a servomotor connected to an actuator element for displacing the respective secondary latch member between the respective lock, unlock an antitheft positions. A central switch is connect…