Parking disk with integral radio clock for timing of parking periods

摘要

The parking disk includes an integral clock which is supplied with electrical power. When the vehicle ignition is switched off, this electrical power supply is interrupted and the clock stops to show the start of the period for which the vehicle is parked. When the vehicle is restarted, electrical power supply to the clock is restored, thus enabling it to display the correct time once more. The parking disk and its integral clock can be built in to new vehicles or added later. If the disk is fitted to a new vehicle in a position which is visible from the inside of the vehicle, no additional internal clock will be required.