An electronic system which includes a power delivery surface that delivers electrical power to an electrical or electronic device. The power delivery surface may be powered by any electrical power source, including, but not limited to: wall electrical outlet, solar power system, battery, vehicle cigarette...http://www.google.se/patents/US7932638?utm_source=gb-gplus-sharePatent US7932638 - Reliable contact and safe system and method for providing power to an electronic device
