By way of an energy source, switches controlled by delay sensors activate a logic component. Dependent on the switch positions of the switches, of a seat switch and of a seat belt switch, the logic component controls an electronic ignition switch that connects a trigger for actuating a motor vehicle...http://www.google.com.tw/patents/US4845377?utm_source=gb-gplus-share專利 US4845377 - Circuit arrangement for the actuation of a safety system
