Remote-control system for closures

US5136548A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Klaus Claar · Sindelfingen, DE
• Martin Lindmayer · Sulz, DE

Key dates

• Filing date: Jun 3, 1991
• Grant date: Aug 4, 1992
• Expiry date: Jun 3, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S367/903
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A remote-control system for closures with a movable hand transmitter with at least one transmission key, this transmitter generating and radiating directed coded control signals upon actuation of the transmission key of the hand transmitter. At least one first receiver unit is tuned to receive the control signals radiated from the hand transmitter and is arranged on a motor vehicle and triggers switching effects on a remotely controllable vehicle locking after the received control signals have been identified as acceptable. At least one second receiver unit is tuned to receive control signals radiated as a result of the actuation of the transmission key of the hand transmitter for remotely controlling a remotely controllable access control device external to the motor vehicle. This second receiver unit is arranged outside the motor vehicle and triggers switching effects on the access control device after the received control signals have been identified as acceptable. An electrical circuit is provided for preventing at least the triggering of switching effects by the second receiver unit when the control signal radiated as a result of a single actuation of the transmission key of t…