A one piece jumper power cord molded out of rubber or some other insulating material. The one piece power cord conforms to the rear shape of a vertical stack of electronic devices that it interconnects. By keeping the power cords short and properly shaped, power can be jumpered from a lower device housed...http://www.google.com/patents/US4950178?utm_source=gb-gplus-sharePatent US4950178 - AC power interconnect for stacked electronic devices
