Electronic steering lock

US7582984B2 · kind B2 · utility

Assignee

• Huf Hülsbeck & Fürst GmbH & Co. KG · DE

Inventors

• Mirko Schindler · Velbert, DE
• Andreas Van Den Boom · Essen, DE
• Helmut Schumacher · Coesfeld, DE
• Franz Weber · Wiesloch, DE
• Rainer Vaupel · Hattingen, DE

Key dates

• Filing date: Jul 1, 2005
• Grant date: Sep 1, 2009
• Expiry date: Mar 2, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T70/5956
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An electronic steering lock includes a power supply control unit and a locking assembly. The power supply control unit provides a supply voltage for locking the assembly via a ground supply line and a voltage supply line. The locking assembly is only supplied with a supply voltage and ground when a voltage with respect to ground is present on an ignition supply line, which is indicative of the ignition being switched off. The locking assembly includes a locking motor supplied with voltage and ground, whereby the ground supply of the locking motor is provided via a ground supply switching device. The locking assembly further includes a control circuit which controls the ground supply switching device. The control circuit produces a control signal which opens the ground supply switching device when the voltage on the additional input connection is indicative of the ignition being switched on.